content: /*
   * Copyright (C) 2006 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.content.pm;
  
  import android.Manifest;
  import android.annotation.CheckResult;
  import android.annotation.DrawableRes;
  import android.annotation.IntDef;
  import android.annotation.IntRange;
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.annotation.RequiresPermission;
  import android.annotation.SdkConstant;
  import android.annotation.SdkConstant.SdkConstantType;
  import android.annotation.StringRes;
  import android.annotation.SystemApi;
  import android.annotation.TestApi;
  import android.annotation.UnsupportedAppUsage;
  import android.annotation.UserIdInt;
  import android.annotation.XmlRes;
  import android.app.ActivityManager;
  import android.app.AppDetailsActivity;
  import android.app.PackageDeleteObserver;
  import android.app.PackageInstallObserver;
  import android.app.admin.DevicePolicyManager;
  import android.app.usage.StorageStatsManager;
  import android.content.ComponentName;
  import android.content.Context;
  import android.content.Intent;
  import android.content.IntentFilter;
  import android.content.IntentSender;
  import android.content.pm.PackageParser.PackageParserException;
  import android.content.pm.dex.ArtManager;
  import android.content.res.Resources;
  import android.content.res.XmlResourceParser;
  import android.graphics.Rect;
  import android.graphics.drawable.Drawable;
  import android.net.wifi.WifiManager;
  import android.os.Build;
  import android.os.Bundle;
  import android.os.Handler;
  import android.os.PersistableBundle;
  import android.os.RemoteException;
  import android.os.UserHandle;
  import android.os.UserManager;
  import android.os.storage.StorageManager;
  import android.os.storage.VolumeInfo;
  import android.util.AndroidException;
  import android.util.Log;
  
  import com.android.internal.util.ArrayUtils;
  
  import dalvik.system.VMRuntime;
  
  import java.io.File;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.util.Collections;
  import java.util.List;
  import java.util.Locale;
  import java.util.Set;
  
  /**
   * Class for retrieving various kinds of information related to the application
   * packages that are currently installed on the device.
   *
   * You can find this class through {@link Context#getPackageManager}.
   */
  public abstract class PackageManager {
      private static final String TAG = "PackageManager";
  
      /** {@hide} */
      public static final boolean APPLY_DEFAULT_TO_DEVICE_PROTECTED_STORAGE = true;
  
      /**
       * This exception is thrown when a given package, application, or component
       * name cannot be found.
       */
      public static class NameNotFoundException extends AndroidException {
          public NameNotFoundException() {
          }
  
          public NameNotFoundException(String name) {
              super(name);
          }
      }
  
      /**
       * Listener for changes in permissions granted to a UID.
       *
       * @hide
       */
      @SystemApi
      public interface OnPermissionsChangedListener {
  
          /**
           * Called when the permissions for a UID change.
           * @param uid The UID with a change.
           */
          public void onPermissionsChanged(int uid);
      }
  
      /**
       * As a guiding principle:
       * <p>
       * {@code GET_} flags are used to request additional data that may have been
       * elided to save wire space.
       * <p>
       * {@code MATCH_} flags are used to include components or packages that
       * would have otherwise been omitted from a result set by current system
       * state.
       */
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_ACTIVITIES,
              GET_CONFIGURATIONS,
              GET_GIDS,
              GET_INSTRUMENTATION,
              GET_INTENT_FILTERS,
              GET_META_DATA,
              GET_PERMISSIONS,
              GET_PROVIDERS,
              GET_RECEIVERS,
              GET_SERVICES,
              GET_SHARED_LIBRARY_FILES,
              GET_SIGNATURES,
              GET_SIGNING_CERTIFICATES,
              GET_URI_PERMISSION_PATTERNS,
              MATCH_UNINSTALLED_PACKAGES,
              MATCH_DISABLED_COMPONENTS,
              MATCH_DISABLED_UNTIL_USED_COMPONENTS,
              MATCH_SYSTEM_ONLY,
              MATCH_FACTORY_ONLY,
              MATCH_DEBUG_TRIAGED_MISSING,
              MATCH_INSTANT,
              MATCH_APEX,
              GET_DISABLED_COMPONENTS,
              GET_DISABLED_UNTIL_USED_COMPONENTS,
              GET_UNINSTALLED_PACKAGES,
              MATCH_HIDDEN_UNTIL_INSTALLED_COMPONENTS,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PackageInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
              GET_SHARED_LIBRARY_FILES,
              MATCH_UNINSTALLED_PACKAGES,
              MATCH_SYSTEM_ONLY,
              MATCH_DEBUG_TRIAGED_MISSING,
              MATCH_DISABLED_COMPONENTS,
              MATCH_DISABLED_UNTIL_USED_COMPONENTS,
              MATCH_INSTANT,
              MATCH_STATIC_SHARED_LIBRARIES,
              GET_DISABLED_UNTIL_USED_COMPONENTS,
              GET_UNINSTALLED_PACKAGES,
              MATCH_HIDDEN_UNTIL_INSTALLED_COMPONENTS,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface ApplicationInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
              GET_SHARED_LIBRARY_FILES,
              MATCH_ALL,
              MATCH_DEBUG_TRIAGED_MISSING,
              MATCH_DEFAULT_ONLY,
              MATCH_DISABLED_COMPONENTS,
              MATCH_DISABLED_UNTIL_USED_COMPONENTS,
              MATCH_DIRECT_BOOT_AUTO,
              MATCH_DIRECT_BOOT_AWARE,
              MATCH_DIRECT_BOOT_UNAWARE,
              MATCH_SYSTEM_ONLY,
              MATCH_UNINSTALLED_PACKAGES,
              MATCH_INSTANT,
              MATCH_STATIC_SHARED_LIBRARIES,
              GET_DISABLED_COMPONENTS,
              GET_DISABLED_UNTIL_USED_COMPONENTS,
              GET_UNINSTALLED_PACKAGES,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface ComponentInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
              GET_RESOLVED_FILTER,
              GET_SHARED_LIBRARY_FILES,
              MATCH_ALL,
              MATCH_DEBUG_TRIAGED_MISSING,
              MATCH_DISABLED_COMPONENTS,
              MATCH_DISABLED_UNTIL_USED_COMPONENTS,
              MATCH_DEFAULT_ONLY,
              MATCH_DIRECT_BOOT_AUTO,
              MATCH_DIRECT_BOOT_AWARE,
              MATCH_DIRECT_BOOT_UNAWARE,
              MATCH_SYSTEM_ONLY,
              MATCH_UNINSTALLED_PACKAGES,
              MATCH_INSTANT,
              GET_DISABLED_COMPONENTS,
              GET_DISABLED_UNTIL_USED_COMPONENTS,
              GET_UNINSTALLED_PACKAGES,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface ResolveInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              MATCH_ALL,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface ModuleInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PermissionInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PermissionGroupInfoFlags {}
  
      /** @hide */
      @IntDef(flag = true, prefix = { "GET_", "MATCH_" }, value = {
              GET_META_DATA,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface InstrumentationInfoFlags {}
  
      /**
       * {@link PackageInfo} flag: return information about
       * activities in the package in {@link PackageInfo#activities}.
       */
      public static final int GET_ACTIVITIES              = 0x00000001;
  
      /**
       * {@link PackageInfo} flag: return information about
       * intent receivers in the package in
       * {@link PackageInfo#receivers}.
       */
      public static final int GET_RECEIVERS               = 0x00000002;
  
      /**
       * {@link PackageInfo} flag: return information about
       * services in the package in {@link PackageInfo#services}.
       */
      public static final int GET_SERVICES                = 0x00000004;
  
      /**
       * {@link PackageInfo} flag: return information about
       * content providers in the package in
       * {@link PackageInfo#providers}.
       */
      public static final int GET_PROVIDERS               = 0x00000008;
  
      /**
       * {@link PackageInfo} flag: return information about
       * instrumentation in the package in
       * {@link PackageInfo#instrumentation}.
       */
      public static final int GET_INSTRUMENTATION         = 0x00000010;
  
      /**
       * {@link PackageInfo} flag: return information about the
       * intent filters supported by the activity.
       */
      public static final int GET_INTENT_FILTERS          = 0x00000020;
  
      /**
       * {@link PackageInfo} flag: return information about the
       * signatures included in the package.
       *
       * @deprecated use {@code GET_SIGNING_CERTIFICATES} instead
       */
      @Deprecated
      public static final int GET_SIGNATURES          = 0x00000040;
  
      /**
       * {@link ResolveInfo} flag: return the IntentFilter that
       * was matched for a particular ResolveInfo in
       * {@link ResolveInfo#filter}.
       */
      public static final int GET_RESOLVED_FILTER         = 0x00000040;
  
      /**
       * {@link ComponentInfo} flag: return the {@link ComponentInfo#metaData}
       * data {@link android.os.Bundle}s that are associated with a component.
       * This applies for any API returning a ComponentInfo subclass.
       */
      public static final int GET_META_DATA               = 0x00000080;
  
      /**
       * {@link PackageInfo} flag: return the
       * {@link PackageInfo#gids group ids} that are associated with an
       * application.
       * This applies for any API returning a PackageInfo class, either
       * directly or nested inside of another.
       */
      public static final int GET_GIDS                    = 0x00000100;
  
      /**
       * @deprecated replaced with {@link #MATCH_DISABLED_COMPONENTS}
       */
      @Deprecated
      public static final int GET_DISABLED_COMPONENTS = 0x00000200;
  
      /**
       * {@link PackageInfo} flag: include disabled components in the returned info.
       */
      public static final int MATCH_DISABLED_COMPONENTS = 0x00000200;
  
      /**
       * {@link ApplicationInfo} flag: return the
       * {@link ApplicationInfo#sharedLibraryFiles paths to the shared libraries}
       * that are associated with an application.
       * This applies for any API returning an ApplicationInfo class, either
       * directly or nested inside of another.
       */
      public static final int GET_SHARED_LIBRARY_FILES    = 0x00000400;
  
      /**
       * {@link ProviderInfo} flag: return the
       * {@link ProviderInfo#uriPermissionPatterns URI permission patterns}
       * that are associated with a content provider.
       * This applies for any API returning a ProviderInfo class, either
       * directly or nested inside of another.
       */
      public static final int GET_URI_PERMISSION_PATTERNS  = 0x00000800;
      /**
       * {@link PackageInfo} flag: return information about
       * permissions in the package in
       * {@link PackageInfo#permissions}.
       */
      public static final int GET_PERMISSIONS               = 0x00001000;
  
      /**
       * @deprecated replaced with {@link #MATCH_UNINSTALLED_PACKAGES}
       */
      @Deprecated
      public static final int GET_UNINSTALLED_PACKAGES = 0x00002000;
  
      /**
       * Flag parameter to retrieve some information about all applications (even
       * uninstalled ones) which have data directories. This state could have
       * resulted if applications have been deleted with flag
       * {@code DONT_DELETE_DATA} with a possibility of being replaced or
       * reinstalled in future.
       * <p>
       * Note: this flag may cause less information about currently installed
       * applications to be returned.
       */
      public static final int MATCH_UNINSTALLED_PACKAGES = 0x00002000;
  
      /**
       * {@link PackageInfo} flag: return information about
       * hardware preferences in
       * {@link PackageInfo#configPreferences PackageInfo.configPreferences},
       * and requested features in {@link PackageInfo#reqFeatures} and
       * {@link PackageInfo#featureGroups}.
       */
      public static final int GET_CONFIGURATIONS = 0x00004000;
  
      /**
       * @deprecated replaced with {@link #MATCH_DISABLED_UNTIL_USED_COMPONENTS}.
       */
      @Deprecated
      public static final int GET_DISABLED_UNTIL_USED_COMPONENTS = 0x00008000;
  
      /**
       * {@link PackageInfo} flag: include disabled components which are in
       * that state only because of {@link #COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED}
       * in the returned info.  Note that if you set this flag, applications
       * that are in this disabled state will be reported as enabled.
       */
      public static final int MATCH_DISABLED_UNTIL_USED_COMPONENTS = 0x00008000;
  
      /**
       * Resolution and querying flag: if set, only filters that support the
       * {@link android.content.Intent#CATEGORY_DEFAULT} will be considered for
       * matching.  This is a synonym for including the CATEGORY_DEFAULT in your
       * supplied Intent.
       */
      public static final int MATCH_DEFAULT_ONLY  = 0x00010000;
  
      /**
       * Querying flag: if set and if the platform is doing any filtering of the
       * results, then the filtering will not happen. This is a synonym for saying
       * that all results should be returned.
       * <p>
       * <em>This flag should be used with extreme care.</em>
       */
      public static final int MATCH_ALL = 0x00020000;
  
      /**
       * Querying flag: match components which are direct boot <em>unaware</em> in
       * the returned info, regardless of the current user state.
       * <p>
       * When neither {@link #MATCH_DIRECT_BOOT_AWARE} nor
       * {@link #MATCH_DIRECT_BOOT_UNAWARE} are specified, the default behavior is
       * to match only runnable components based on the user state. For example,
       * when a user is started but credentials have not been presented yet, the
       * user is running "locked" and only {@link #MATCH_DIRECT_BOOT_AWARE}
       * components are returned. Once the user credentials have been presented,
       * the user is running "unlocked" and both {@link #MATCH_DIRECT_BOOT_AWARE}
       * and {@link #MATCH_DIRECT_BOOT_UNAWARE} components are returned.
       *
       * @see UserManager#isUserUnlocked()
       */
      public static final int MATCH_DIRECT_BOOT_UNAWARE = 0x00040000;
  
      /**
       * Querying flag: match components which are direct boot <em>aware</em> in
       * the returned info, regardless of the current user state.
       * <p>
       * When neither {@link #MATCH_DIRECT_BOOT_AWARE} nor
       * {@link #MATCH_DIRECT_BOOT_UNAWARE} are specified, the default behavior is
       * to match only runnable components based on the user state. For example,
       * when a user is started but credentials have not been presented yet, the
       * user is running "locked" and only {@link #MATCH_DIRECT_BOOT_AWARE}
       * components are returned. Once the user credentials have been presented,
       * the user is running "unlocked" and both {@link #MATCH_DIRECT_BOOT_AWARE}
       * and {@link #MATCH_DIRECT_BOOT_UNAWARE} components are returned.
       *
       * @see UserManager#isUserUnlocked()
       */
      public static final int MATCH_DIRECT_BOOT_AWARE = 0x00080000;
  
      /**
       * Querying flag: include only components from applications that are marked
       * with {@link ApplicationInfo#FLAG_SYSTEM}.
       */
      public static final int MATCH_SYSTEM_ONLY = 0x00100000;
  
      /**
       * Internal {@link PackageInfo} flag: include only components on the system image.
       * This will not return information on any unbundled update to system components.
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int MATCH_FACTORY_ONLY = 0x00200000;
  
      /**
       * Allows querying of packages installed for any user, not just the specific one. This flag
       * is only meant for use by apps that have INTERACT_ACROSS_USERS permission.
       * @hide
       */
      @SystemApi
      public static final int MATCH_ANY_USER = 0x00400000;
  
      /**
       * Combination of MATCH_ANY_USER and MATCH_UNINSTALLED_PACKAGES to mean any known
       * package.
       * @hide
       */
      @TestApi
      public static final int MATCH_KNOWN_PACKAGES = MATCH_UNINSTALLED_PACKAGES | MATCH_ANY_USER;
  
      /**
       * Internal {@link PackageInfo} flag: include components that are part of an
       * instant app. By default, instant app components are not matched.
       * @hide
       */
      @SystemApi
      public static final int MATCH_INSTANT = 0x00800000;
  
      /**
       * Internal {@link PackageInfo} flag: include only components that are exposed to
       * instant apps. Matched components may have been either explicitly or implicitly
       * exposed.
       * @hide
       */
      public static final int MATCH_VISIBLE_TO_INSTANT_APP_ONLY = 0x01000000;
  
      /**
       * Internal {@link PackageInfo} flag: include only components that have been
       * explicitly exposed to instant apps.
       * @hide
       */
      public static final int MATCH_EXPLICITLY_VISIBLE_ONLY = 0x02000000;
  
      /**
       * Internal {@link PackageInfo} flag: include static shared libraries.
       * Apps that depend on static shared libs can always access the version
       * of the lib they depend on. System/shell/root can access all shared
       * libs regardless of dependency but need to explicitly ask for them
       * via this flag.
       * @hide
       */
      public static final int MATCH_STATIC_SHARED_LIBRARIES = 0x04000000;
  
      /**
       * {@link PackageInfo} flag: return the signing certificates associated with
       * this package.  Each entry is a signing certificate that the package
       * has proven it is authorized to use, usually a past signing certificate from
       * which it has rotated.
       */
      public static final int GET_SIGNING_CERTIFICATES = 0x08000000;
  
      /**
       * Querying flag: automatically match components based on their Direct Boot
       * awareness and the current user state.
       * <p>
       * Since the default behavior is to automatically apply the current user
       * state, this is effectively a sentinel value that doesn't change the
       * output of any queries based on its presence or absence.
       * <p>
       * Instead, this value can be useful in conjunction with
       * {@link android.os.StrictMode.VmPolicy.Builder#detectImplicitDirectBoot()}
       * to detect when a caller is relying on implicit automatic matching,
       * instead of confirming the explicit behavior they want, using a
       * combination of these flags:
       * <ul>
       * <li>{@link #MATCH_DIRECT_BOOT_AWARE}
       * <li>{@link #MATCH_DIRECT_BOOT_UNAWARE}
       * <li>{@link #MATCH_DIRECT_BOOT_AUTO}
       * </ul>
       */
      public static final int MATCH_DIRECT_BOOT_AUTO = 0x10000000;
  
      /** @hide */
      @Deprecated
      public static final int MATCH_DEBUG_TRIAGED_MISSING = MATCH_DIRECT_BOOT_AUTO;
  
      /**
       * Internal flag used to indicate that a package is a hidden system app.
       * @hide
       */
      public static final int MATCH_HIDDEN_UNTIL_INSTALLED_COMPONENTS =  0x20000000;
  
      /**
       * {@link PackageInfo} flag: include APEX packages that are currently
       * installed. In APEX terminology, this corresponds to packages that are
       * currently active, i.e. mounted and available to other processes of the OS.
       * In particular, this flag alone will not match APEX files that are staged
       * for activation at next reboot.
       */
      public static final int MATCH_APEX = 0x40000000;
  
      /**
       * Flag for {@link #addCrossProfileIntentFilter}: if this flag is set: when
       * resolving an intent that matches the {@code CrossProfileIntentFilter},
       * the current profile will be skipped. Only activities in the target user
       * can respond to the intent.
       *
       * @hide
       */
      public static final int SKIP_CURRENT_PROFILE = 0x00000002;
  
      /**
       * Flag for {@link #addCrossProfileIntentFilter}: if this flag is set:
       * activities in the other profiles can respond to the intent only if no activity with
       * non-negative priority in current profile can respond to the intent.
       * @hide
       */
      public static final int ONLY_IF_NO_MATCH_FOUND = 0x00000004;
  
      /** @hide */
      @IntDef(prefix = { "PERMISSION_" }, value = {
              PERMISSION_GRANTED,
              PERMISSION_DENIED
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PermissionResult {}
  
      /**
       * Permission check result: this is returned by {@link #checkPermission}
       * if the permission has been granted to the given package.
       */
      public static final int PERMISSION_GRANTED = 0;
  
      /**
       * Permission check result: this is returned by {@link #checkPermission}
       * if the permission has not been granted to the given package.
       */
      public static final int PERMISSION_DENIED = -1;
  
      /** @hide */
      @IntDef(prefix = { "SIGNATURE_" }, value = {
              SIGNATURE_MATCH,
              SIGNATURE_NEITHER_SIGNED,
              SIGNATURE_FIRST_NOT_SIGNED,
              SIGNATURE_SECOND_NOT_SIGNED,
              SIGNATURE_NO_MATCH,
              SIGNATURE_UNKNOWN_PACKAGE,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface SignatureResult {}
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if all signatures on the two packages match.
       */
      public static final int SIGNATURE_MATCH = 0;
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if neither of the two packages is signed.
       */
      public static final int SIGNATURE_NEITHER_SIGNED = 1;
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if the first package is not signed but the second is.
       */
      public static final int SIGNATURE_FIRST_NOT_SIGNED = -1;
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if the second package is not signed but the first is.
       */
      public static final int SIGNATURE_SECOND_NOT_SIGNED = -2;
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if not all signatures on both packages match.
       */
      public static final int SIGNATURE_NO_MATCH = -3;
  
      /**
       * Signature check result: this is returned by {@link #checkSignatures}
       * if either of the packages are not valid.
       */
      public static final int SIGNATURE_UNKNOWN_PACKAGE = -4;
  
      /** @hide */
      @IntDef(prefix = { "COMPONENT_ENABLED_STATE_" }, value = {
              COMPONENT_ENABLED_STATE_DEFAULT,
              COMPONENT_ENABLED_STATE_ENABLED,
              COMPONENT_ENABLED_STATE_DISABLED,
              COMPONENT_ENABLED_STATE_DISABLED_USER,
              COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface EnabledState {}
  
      /**
       * Flag for {@link #setApplicationEnabledSetting(String, int, int)} and
       * {@link #setComponentEnabledSetting(ComponentName, int, int)}: This
       * component or application is in its default enabled state (as specified in
       * its manifest).
       * <p>
       * Explicitly setting the component state to this value restores it's
       * enabled state to whatever is set in the manifest.
       */
      public static final int COMPONENT_ENABLED_STATE_DEFAULT = 0;
  
      /**
       * Flag for {@link #setApplicationEnabledSetting(String, int, int)}
       * and {@link #setComponentEnabledSetting(ComponentName, int, int)}: This
       * component or application has been explictily enabled, regardless of
       * what it has specified in its manifest.
       */
      public static final int COMPONENT_ENABLED_STATE_ENABLED = 1;
  
      /**
       * Flag for {@link #setApplicationEnabledSetting(String, int, int)}
       * and {@link #setComponentEnabledSetting(ComponentName, int, int)}: This
       * component or application has been explicitly disabled, regardless of
       * what it has specified in its manifest.
       */
      public static final int COMPONENT_ENABLED_STATE_DISABLED = 2;
  
      /**
       * Flag for {@link #setApplicationEnabledSetting(String, int, int)} only: The
       * user has explicitly disabled the application, regardless of what it has
       * specified in its manifest.  Because this is due to the user's request,
       * they may re-enable it if desired through the appropriate system UI.  This
       * option currently <strong>cannot</strong> be used with
       * {@link #setComponentEnabledSetting(ComponentName, int, int)}.
       */
      public static final int COMPONENT_ENABLED_STATE_DISABLED_USER = 3;
  
      /**
       * Flag for {@link #setApplicationEnabledSetting(String, int, int)} only: This
       * application should be considered, until the point where the user actually
       * wants to use it.  This means that it will not normally show up to the user
       * (such as in the launcher), but various parts of the user interface can
       * use {@link #GET_DISABLED_UNTIL_USED_COMPONENTS} to still see it and allow
       * the user to select it (as for example an IME, device admin, etc).  Such code,
       * once the user has selected the app, should at that point also make it enabled.
       * This option currently <strong>can not</strong> be used with
       * {@link #setComponentEnabledSetting(ComponentName, int, int)}.
       */
      public static final int COMPONENT_ENABLED_STATE_DISABLED_UNTIL_USED = 4;
  
      /** @hide */
      @IntDef(flag = true, prefix = { "INSTALL_" }, value = {
              INSTALL_REPLACE_EXISTING,
              INSTALL_ALLOW_TEST,
              INSTALL_INTERNAL,
              INSTALL_FROM_ADB,
              INSTALL_ALL_USERS,
              INSTALL_REQUEST_DOWNGRADE,
              INSTALL_GRANT_RUNTIME_PERMISSIONS,
              INSTALL_ALL_WHITELIST_RESTRICTED_PERMISSIONS,
              INSTALL_FORCE_VOLUME_UUID,
              INSTALL_FORCE_PERMISSION_PROMPT,
              INSTALL_INSTANT_APP,
              INSTALL_DONT_KILL_APP,
              INSTALL_FULL_APP,
              INSTALL_ALLOCATE_AGGRESSIVE,
              INSTALL_VIRTUAL_PRELOAD,
              INSTALL_APEX,
              INSTALL_ENABLE_ROLLBACK,
              INSTALL_ALLOW_DOWNGRADE,
              INSTALL_STAGED,
              INSTALL_DRY_RUN,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface InstallFlags {}
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that you want to
       * replace an already installed package, if one exists.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public static final int INSTALL_REPLACE_EXISTING = 0x00000002;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that you want to
       * allow test packages (those that have set android:testOnly in their
       * manifest) to be installed.
       * @hide
       */
      public static final int INSTALL_ALLOW_TEST = 0x00000004;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package
       * must be installed to internal storage.
       *
       * @hide
       */
      public static final int INSTALL_INTERNAL = 0x00000010;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this install
       * was initiated via ADB.
       *
       * @hide
       */
      public static final int INSTALL_FROM_ADB = 0x00000020;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this install
       * should immediately be visible to all users.
       *
       * @hide
       */
      public static final int INSTALL_ALL_USERS = 0x00000040;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that an upgrade to a lower version
       * of a package than currently installed has been requested.
       *
       * <p>Note that this flag doesn't guarantee that downgrade will be performed. That decision
       * depends
       * on whenever:
       * <ul>
       * <li>An app is debuggable.
       * <li>Or a build is debuggable.
       * <li>Or {@link #INSTALL_ALLOW_DOWNGRADE} is set.
       * </ul>
       *
       * @hide
       */
      public static final int INSTALL_REQUEST_DOWNGRADE = 0x00000080;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that all runtime
       * permissions should be granted to the package. If {@link #INSTALL_ALL_USERS}
       * is set the runtime permissions will be granted to all users, otherwise
       * only to the owner.
       *
       * @hide
       */
      public static final int INSTALL_GRANT_RUNTIME_PERMISSIONS = 0x00000100;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that all restricted
       * permissions should be whitelisted. If {@link #INSTALL_ALL_USERS}
       * is set the restricted permissions will be whitelisted for all users, otherwise
       * only to the owner.
       *
       * @hide
       */
      public static final int INSTALL_ALL_WHITELIST_RESTRICTED_PERMISSIONS = 0x00400000;
  
      /** {@hide} */
      public static final int INSTALL_FORCE_VOLUME_UUID = 0x00000200;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that we always want to force
       * the prompt for permission approval. This overrides any special behaviour for internal
       * components.
       *
       * @hide
       */
      public static final int INSTALL_FORCE_PERMISSION_PROMPT = 0x00000400;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package is
       * to be installed as a lightweight "ephemeral" app.
       *
       * @hide
       */
      public static final int INSTALL_INSTANT_APP = 0x00000800;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package contains
       * a feature split to an existing application and the existing application should not
       * be killed during the installation process.
       *
       * @hide
       */
      public static final int INSTALL_DONT_KILL_APP = 0x00001000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package is
       * to be installed as a heavy weight app. This is fundamentally the opposite of
       * {@link #INSTALL_INSTANT_APP}.
       *
       * @hide
       */
      public static final int INSTALL_FULL_APP = 0x00004000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package
       * is critical to system health or security, meaning the system should use
       * {@link StorageManager#FLAG_ALLOCATE_AGGRESSIVE} internally.
       *
       * @hide
       */
      public static final int INSTALL_ALLOCATE_AGGRESSIVE = 0x00008000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package
       * is a virtual preload.
       *
       * @hide
       */
      public static final int INSTALL_VIRTUAL_PRELOAD = 0x00010000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package
       * is an APEX package
       *
       * @hide
       */
      public static final int INSTALL_APEX = 0x00020000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that rollback
       * should be enabled for this install.
       *
       * @hide
       */
      public static final int INSTALL_ENABLE_ROLLBACK = 0x00040000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that package verification should be
       * disabled for this package.
       *
       * @hide
       */
      public static final int INSTALL_DISABLE_VERIFICATION = 0x00080000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that
       * {@link #INSTALL_REQUEST_DOWNGRADE} should be allowed.
       *
       * @hide
       */
      public static final int INSTALL_ALLOW_DOWNGRADE = 0x00100000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that this package
       * is being installed as part of a staged install.
       *
       * @hide
       */
      public static final int INSTALL_STAGED = 0x00200000;
  
      /**
       * Flag parameter for {@link #installPackage} to indicate that package should only be verified
       * but not installed.
       *
       * @hide
       */
      public static final int INSTALL_DRY_RUN = 0x00800000;
  
      /** @hide */
      @IntDef(flag = true, prefix = { "DONT_KILL_APP" }, value = {
              DONT_KILL_APP
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface EnabledFlags {}
  
      /**
       * Flag parameter for
       * {@link #setComponentEnabledSetting(android.content.ComponentName, int, int)} to indicate
       * that you don't want to kill the app containing the component.  Be careful when you set this
       * since changing component states can make the containing application's behavior unpredictable.
       */
      public static final int DONT_KILL_APP = 0x00000001;
  
      /** @hide */
      @IntDef(prefix = { "INSTALL_REASON_" }, value = {
              INSTALL_REASON_UNKNOWN,
              INSTALL_REASON_POLICY,
              INSTALL_REASON_DEVICE_RESTORE,
              INSTALL_REASON_DEVICE_SETUP,
              INSTALL_REASON_USER
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface InstallReason {}
  
      /**
       * Code indicating that the reason for installing this package is unknown.
       */
      public static final int INSTALL_REASON_UNKNOWN = 0;
  
      /**
       * Code indicating that this package was installed due to enterprise policy.
       */
      public static final int INSTALL_REASON_POLICY = 1;
  
      /**
       * Code indicating that this package was installed as part of restoring from another device.
       */
      public static final int INSTALL_REASON_DEVICE_RESTORE = 2;
  
      /**
       * Code indicating that this package was installed as part of device setup.
       */
      public static final int INSTALL_REASON_DEVICE_SETUP = 3;
  
      /**
       * Code indicating that the package installation was initiated by the user.
       */
      public static final int INSTALL_REASON_USER = 4;
  
      /**
       * @hide
       */
      public static final int INSTALL_UNKNOWN = 0;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * on success.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_SUCCEEDED = 1;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the package is already installed.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_ALREADY_EXISTS = -1;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the package archive file is invalid.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_INVALID_APK = -2;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the URI passed in is invalid.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_INVALID_URI = -3;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the package manager service found that the device didn't have enough storage space to
       * install the app.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_INSUFFICIENT_STORAGE = -4;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if a package is already installed with the same name.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_DUPLICATE_PACKAGE = -5;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the requested shared user does not exist.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_NO_SHARED_USER = -6;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if a previously installed package of the same name has a different signature than the new
       * package (and the old package's data was not removed).
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_UPDATE_INCOMPATIBLE = -7;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package is requested a shared user which is already installed on the device and
       * does not have matching signature.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_SHARED_USER_INCOMPATIBLE = -8;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package uses a shared library that is not available.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_MISSING_SHARED_LIBRARY = -9;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package uses a shared library that is not available.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_REPLACE_COULDNT_DELETE = -10;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package failed while optimizing and validating its dex files, either because there
       * was not enough storage or the validation failed.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_DEXOPT = -11;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package failed because the current SDK version is older than that required by the
       * package.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_OLDER_SDK = -12;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package failed because it contains a content provider with the same authority as a
       * provider already installed in the system.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_CONFLICTING_PROVIDER = -13;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package failed because the current SDK version is newer than that required by the
       * package.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_NEWER_SDK = -14;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package failed because it has specified that it is a test-only package and the
       * caller has not supplied the {@link #INSTALL_ALLOW_TEST} flag.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_TEST_ONLY = -15;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the package being installed contains native code, but none that is compatible with the
       * device's CPU_ABI.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_CPU_ABI_INCOMPATIBLE = -16;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package uses a feature that is not available.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_MISSING_FEATURE = -17;
  
      // ------ Errors related to sdcard
      /**
       * Installation return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if a secure container mount point couldn't be
       * accessed on external media.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_CONTAINER_ERROR = -18;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package couldn't be installed in the specified install location.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_INVALID_INSTALL_LOCATION = -19;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package couldn't be installed in the specified install location because the media
       * is not available.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_MEDIA_UNAVAILABLE = -20;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package couldn't be installed because the verification timed out.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_VERIFICATION_TIMEOUT = -21;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package couldn't be installed because the verification did not succeed.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_VERIFICATION_FAILURE = -22;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the package changed from what the calling program expected.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_PACKAGE_CHANGED = -23;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package is assigned a different UID than it previously held.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_UID_CHANGED = -24;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package has an older version code than the currently installed package.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_VERSION_DOWNGRADE = -25;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the old package has target SDK high enough to support runtime permission and the new
       * package has target SDK low enough to not support runtime permissions.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_PERMISSION_MODEL_DOWNGRADE = -26;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package attempts to downgrade the target sandbox version of the app.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_SANDBOX_VERSION_DOWNGRADE = -27;
  
      /**
       * Installation return code: this is passed in the {@link PackageInstaller#EXTRA_LEGACY_STATUS}
       * if the new package requires at least one split and it was not provided.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_MISSING_SPLIT = -28;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser was given a path that is not a
       * file, or does not end with the expected '.apk' extension.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_NOT_APK = -100;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser was unable to retrieve the
       * AndroidManifest.xml file.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_BAD_MANIFEST = -101;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser encountered an unexpected
       * exception.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION = -102;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser did not find any certificates in
       * the .apk.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_NO_CERTIFICATES = -103;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser found inconsistent certificates on
       * the files in the .apk.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES = -104;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser encountered a
       * CertificateEncodingException in one of the files in the .apk.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING = -105;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser encountered a bad or missing
       * package name in the manifest.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME = -106;
  
      /**
       * Installation parse return code: tthis is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser encountered a bad shared user id
       * name in the manifest.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID = -107;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser encountered some structural
       * problem in the manifest.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_MANIFEST_MALFORMED = -108;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the parser did not find any actionable tags
       * (instrumentation or application) in the manifest.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_PARSE_FAILED_MANIFEST_EMPTY = -109;
  
      /**
       * Installation failed return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the system failed to install the package
       * because of system issues.
       *
       * @hide
       */
      @SystemApi
      public static final int INSTALL_FAILED_INTERNAL_ERROR = -110;
  
      /**
       * Installation failed return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the system failed to install the package
       * because the user is restricted from installing apps.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_USER_RESTRICTED = -111;
  
      /**
       * Installation failed return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the system failed to install the package
       * because it is attempting to define a permission that is already defined by some existing
       * package.
       * <p>
       * The package name of the app which has already defined the permission is passed to a
       * {@link PackageInstallObserver}, if any, as the {@link #EXTRA_FAILURE_EXISTING_PACKAGE} string
       * extra; and the name of the permission being redefined is passed in the
       * {@link #EXTRA_FAILURE_EXISTING_PERMISSION} string extra.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_DUPLICATE_PERMISSION = -112;
  
      /**
       * Installation failed return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the system failed to install the package
       * because its packaged native code did not match any of the ABIs supported by the system.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_NO_MATCHING_ABIS = -113;
  
      /**
       * Internal return code for NativeLibraryHelper methods to indicate that the package
       * being processed did not contain any native code. This is placed here only so that
       * it can belong to the same value space as the other install failure codes.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public static final int NO_NATIVE_LIBRARIES = -114;
  
      /** {@hide} */
      public static final int INSTALL_FAILED_ABORTED = -115;
  
      /**
       * Installation failed return code: instant app installs are incompatible with some
       * other installation flags supplied for the operation; or other circumstances such
       * as trying to upgrade a system app via an instant app install.
       * @hide
       */
      public static final int INSTALL_FAILED_INSTANT_APP_INVALID = -116;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if the dex metadata file is invalid or
       * if there was no matching apk file for a dex metadata file.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_BAD_DEX_METADATA = -117;
  
      /**
       * Installation parse return code: this is passed in the
       * {@link PackageInstaller#EXTRA_LEGACY_STATUS} if there is any signature problem.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_BAD_SIGNATURE = -118;
  
      /**
       * Installation failed return code: a new staged session was attempted to be committed while
       * there is already one in-progress.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_OTHER_STAGED_SESSION_IN_PROGRESS = -119;
  
      /**
       * Installation failed return code: one of the child sessions does not match the parent session
       * in respect to staged or rollback enabled parameters.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_MULTIPACKAGE_INCONSISTENCY = -120;
  
      /**
       * Installation failed return code: the required installed version code
       * does not match the currently installed package version code.
       *
       * @hide
       */
      public static final int INSTALL_FAILED_WRONG_INSTALLED_VERSION = -121;
  
      /** @hide */
      @IntDef(flag = true, prefix = { "DELETE_" }, value = {
              DELETE_KEEP_DATA,
              DELETE_ALL_USERS,
              DELETE_SYSTEM_APP,
              DELETE_DONT_KILL_APP,
              DELETE_CHATTY,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface DeleteFlags {}
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that you don't want to delete the
       * package's data directory.
       *
       * @hide
       */
      public static final int DELETE_KEEP_DATA = 0x00000001;
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that you want the
       * package deleted for all users.
       *
       * @hide
       */
      public static final int DELETE_ALL_USERS = 0x00000002;
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that, if you are calling
       * uninstall on a system that has been updated, then don't do the normal process
       * of uninstalling the update and rolling back to the older system version (which
       * needs to happen for all users); instead, just mark the app as uninstalled for
       * the current user.
       *
       * @hide
       */
      public static final int DELETE_SYSTEM_APP = 0x00000004;
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that, if you are calling
       * uninstall on a package that is replaced to provide new feature splits, the
       * existing application should not be killed during the removal process.
       *
       * @hide
       */
      public static final int DELETE_DONT_KILL_APP = 0x00000008;
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that any
       * contributed media should also be deleted during this uninstall. The
       * meaning of "contributed" means it won't automatically be deleted when the
       * app is uninstalled.
       *
       * @hide
       */
      public static final int DELETE_CONTRIBUTED_MEDIA = 0x00000010;
  
      /**
       * Flag parameter for {@link #deletePackage} to indicate that package deletion
       * should be chatty.
       *
       * @hide
       */
      public static final int DELETE_CHATTY = 0x80000000;
  
      /**
       * Return code for when package deletion succeeds. This is passed to the
       * {@link IPackageDeleteObserver} if the system succeeded in deleting the
       * package.
       *
       * @hide
       */
      public static final int DELETE_SUCCEEDED = 1;
  
      /**
       * Deletion failed return code: this is passed to the
       * {@link IPackageDeleteObserver} if the system failed to delete the package
       * for an unspecified reason.
       *
       * @hide
       */
      public static final int DELETE_FAILED_INTERNAL_ERROR = -1;
  
      /**
       * Deletion failed return code: this is passed to the
       * {@link IPackageDeleteObserver} if the system failed to delete the package
       * because it is the active DevicePolicy manager.
       *
       * @hide
       */
      public static final int DELETE_FAILED_DEVICE_POLICY_MANAGER = -2;
  
      /**
       * Deletion failed return code: this is passed to the
       * {@link IPackageDeleteObserver} if the system failed to delete the package
       * since the user is restricted.
       *
       * @hide
       */
      public static final int DELETE_FAILED_USER_RESTRICTED = -3;
  
      /**
       * Deletion failed return code: this is passed to the
       * {@link IPackageDeleteObserver} if the system failed to delete the package
       * because a profile or device owner has marked the package as
       * uninstallable.
       *
       * @hide
       */
      public static final int DELETE_FAILED_OWNER_BLOCKED = -4;
  
      /** {@hide} */
      public static final int DELETE_FAILED_ABORTED = -5;
  
      /**
       * Deletion failed return code: this is passed to the
       * {@link IPackageDeleteObserver} if the system failed to delete the package
       * because the packge is a shared library used by other installed packages.
       * {@hide} */
      public static final int DELETE_FAILED_USED_SHARED_LIBRARY = -6;
  
      /**
       * Return code that is passed to the {@link IPackageMoveObserver} when the
       * package has been successfully moved by the system.
       *
       * @hide
       */
      public static final int MOVE_SUCCEEDED = -100;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} when the
       * package hasn't been successfully moved by the system because of
       * insufficient memory on specified media.
       *
       * @hide
       */
      public static final int MOVE_FAILED_INSUFFICIENT_STORAGE = -1;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package doesn't exist.
       *
       * @hide
       */
      public static final int MOVE_FAILED_DOESNT_EXIST = -2;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package cannot be moved since its a system package.
       *
       * @hide
       */
      public static final int MOVE_FAILED_SYSTEM_PACKAGE = -3;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package cannot be moved to the specified location.
       *
       * @hide
       */
      public static final int MOVE_FAILED_INVALID_LOCATION = -5;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package cannot be moved to the specified location.
       *
       * @hide
       */
      public static final int MOVE_FAILED_INTERNAL_ERROR = -6;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package already has an operation pending in the queue.
       *
       * @hide
       */
      public static final int MOVE_FAILED_OPERATION_PENDING = -7;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if the
       * specified package cannot be moved since it contains a device admin.
       *
       * @hide
       */
      public static final int MOVE_FAILED_DEVICE_ADMIN = -8;
  
      /**
       * Error code that is passed to the {@link IPackageMoveObserver} if system does not allow
       * non-system apps to be moved to internal storage.
       *
       * @hide
       */
      public static final int MOVE_FAILED_3RD_PARTY_NOT_ALLOWED_ON_INTERNAL = -9;
  
      /** @hide */
      public static final int MOVE_FAILED_LOCKED_USER = -10;
  
      /**
       * Flag parameter for {@link #movePackage} to indicate that
       * the package should be moved to internal storage if its
       * been installed on external media.
       * @hide
       */
      @Deprecated
      @UnsupportedAppUsage
      public static final int MOVE_INTERNAL = 0x00000001;
  
      /**
       * Flag parameter for {@link #movePackage} to indicate that
       * the package should be moved to external media.
       * @hide
       */
      @Deprecated
      @UnsupportedAppUsage
      public static final int MOVE_EXTERNAL_MEDIA = 0x00000002;
  
      /** {@hide} */
      public static final String EXTRA_MOVE_ID = "android.content.pm.extra.MOVE_ID";
  
      /**
       * Usable by the required verifier as the {@code verificationCode} argument
       * for {@link PackageManager#verifyPendingInstall} to indicate that it will
       * allow the installation to proceed without any of the optional verifiers
       * needing to vote.
       *
       * @hide
       */
      public static final int VERIFICATION_ALLOW_WITHOUT_SUFFICIENT = 2;
  
      /**
       * Used as the {@code verificationCode} argument for
       * {@link PackageManager#verifyPendingInstall} to indicate that the calling
       * package verifier allows the installation to proceed.
       */
      public static final int VERIFICATION_ALLOW = 1;
  
      /**
       * Used as the {@code verificationCode} argument for
       * {@link PackageManager#verifyPendingInstall} to indicate the calling
       * package verifier does not vote to allow the installation to proceed.
       */
      public static final int VERIFICATION_REJECT = -1;
  
      /**
       * Used as the {@code verificationCode} argument for
       * {@link PackageManager#verifyIntentFilter} to indicate that the calling
       * IntentFilter Verifier confirms that the IntentFilter is verified.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_VERIFICATION_SUCCESS = 1;
  
      /**
       * Used as the {@code verificationCode} argument for
       * {@link PackageManager#verifyIntentFilter} to indicate that the calling
       * IntentFilter Verifier confirms that the IntentFilter is NOT verified.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_VERIFICATION_FAILURE = -1;
  
      /**
       * Internal status code to indicate that an IntentFilter verification result is not specified.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED = 0;
  
      /**
       * Used as the {@code status} argument for
       * {@link #updateIntentVerificationStatusAsUser} to indicate that the User
       * will always be prompted the Intent Disambiguation Dialog if there are two
       * or more Intent resolved for the IntentFilter's domain(s).
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ASK = 1;
  
      /**
       * Used as the {@code status} argument for
       * {@link #updateIntentVerificationStatusAsUser} to indicate that the User
       * will never be prompted the Intent Disambiguation Dialog if there are two
       * or more resolution of the Intent. The default App for the domain(s)
       * specified in the IntentFilter will also ALWAYS be used.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS = 2;
  
      /**
       * Used as the {@code status} argument for
       * {@link #updateIntentVerificationStatusAsUser} to indicate that the User
       * may be prompted the Intent Disambiguation Dialog if there are two or more
       * Intent resolved. The default App for the domain(s) specified in the
       * IntentFilter will also NEVER be presented to the User.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_NEVER = 3;
  
      /**
       * Used as the {@code status} argument for
       * {@link #updateIntentVerificationStatusAsUser} to indicate that this app
       * should always be considered as an ambiguous candidate for handling the
       * matching Intent even if there are other candidate apps in the "always"
       * state. Put another way: if there are any 'always ask' apps in a set of
       * more than one candidate app, then a disambiguation is *always* presented
       * even if there is another candidate app with the 'always' state.
       *
       * @hide
       */
      @SystemApi
      public static final int INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS_ASK = 4;
  
      /**
       * Can be used as the {@code millisecondsToDelay} argument for
       * {@link PackageManager#extendVerificationTimeout}. This is the
       * maximum time {@code PackageManager} waits for the verification
       * agent to return (in milliseconds).
       */
      public static final long MAXIMUM_VERIFICATION_TIMEOUT = 60*60*1000;
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: The device's
       * audio pipeline is low-latency, more suitable for audio applications sensitive to delays or
       * lag in sound input or output.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_AUDIO_LOW_LATENCY = "android.hardware.audio.low_latency";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes at least one form of audio
       * output, as defined in the Android Compatibility Definition Document (CDD)
       * <a href="https://source.android.com/compatibility/android-cdd#7_8_audio">section 7.8 Audio</a>.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_AUDIO_OUTPUT = "android.hardware.audio.output";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has professional audio level of functionality and performance.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_AUDIO_PRO = "android.hardware.audio.pro";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device is capable of communicating with
       * other devices via Bluetooth.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_BLUETOOTH = "android.hardware.bluetooth";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device is capable of communicating with
       * other devices via Bluetooth Low Energy radio.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_BLUETOOTH_LE = "android.hardware.bluetooth_le";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a camera facing away
       * from the screen.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA = "android.hardware.camera";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's camera supports auto-focus.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_AUTOFOCUS = "android.hardware.camera.autofocus";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has at least one camera pointing in
       * some direction, or can support an external camera being connected to it.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_ANY = "android.hardware.camera.any";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device can support having an external camera connected to it.
       * The external camera may not always be connected or available to applications to use.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_EXTERNAL = "android.hardware.camera.external";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's camera supports flash.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_FLASH = "android.hardware.camera.flash";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a front facing camera.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_FRONT = "android.hardware.camera.front";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: At least one
       * of the cameras on the device supports the
       * {@link android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL full hardware}
       * capability level.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_LEVEL_FULL = "android.hardware.camera.level.full";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: At least one
       * of the cameras on the device supports the
       * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR manual sensor}
       * capability level.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_CAPABILITY_MANUAL_SENSOR =
              "android.hardware.camera.capability.manual_sensor";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: At least one
       * of the cameras on the device supports the
       * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING manual post-processing}
       * capability level.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_CAPABILITY_MANUAL_POST_PROCESSING =
              "android.hardware.camera.capability.manual_post_processing";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: At least one
       * of the cameras on the device supports the
       * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}
       * capability level.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_CAPABILITY_RAW =
              "android.hardware.camera.capability.raw";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: At least one
       * of the cameras on the device supports the
       * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING
       * MOTION_TRACKING} capability level.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CAMERA_AR =
              "android.hardware.camera.ar";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device is capable of communicating with
       * consumer IR devices.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CONSUMER_IR = "android.hardware.consumerir";
  
      /** {@hide} */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CTS = "android.software.cts";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports one or more methods of
       * reporting current location.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LOCATION = "android.hardware.location";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a Global Positioning System
       * receiver and can report precise location.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LOCATION_GPS = "android.hardware.location.gps";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device can report location with coarse
       * accuracy using a network-based geolocation system.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LOCATION_NETWORK = "android.hardware.location.network";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's
       * {@link ActivityManager#isLowRamDevice() ActivityManager.isLowRamDevice()} method returns
       * true.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_RAM_LOW = "android.hardware.ram.low";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's
       * {@link ActivityManager#isLowRamDevice() ActivityManager.isLowRamDevice()} method returns
       * false.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_RAM_NORMAL = "android.hardware.ram.normal";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device can record audio via a
       * microphone.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_MICROPHONE = "android.hardware.microphone";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device can communicate using Near-Field
       * Communications (NFC).
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC = "android.hardware.nfc";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports host-
       * based NFC card emulation.
       *
       * TODO remove when depending apps have moved to new constant.
       * @hide
       * @deprecated
       */
      @Deprecated
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_HCE = "android.hardware.nfc.hce";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports host-
       * based NFC card emulation.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_HOST_CARD_EMULATION = "android.hardware.nfc.hce";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports host-
       * based NFC-F card emulation.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_HOST_CARD_EMULATION_NFCF = "android.hardware.nfc.hcef";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports uicc-
       * based NFC card emulation.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_OFF_HOST_CARD_EMULATION_UICC =
                                                                         "android.hardware.nfc.uicc";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports eSE-
       * based NFC card emulation.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_OFF_HOST_CARD_EMULATION_ESE = "android.hardware.nfc.ese";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The Beam API is enabled on the device.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_BEAM = "android.sofware.nfc.beam";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports any
       * one of the {@link #FEATURE_NFC}, {@link #FEATURE_NFC_HOST_CARD_EMULATION},
       * or {@link #FEATURE_NFC_HOST_CARD_EMULATION_NFCF} features.
       *
       * @hide
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_NFC_ANY = "android.hardware.nfc.any";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports the OpenGL ES
       * <a href="http://www.khronos.org/registry/gles/extensions/ANDROID/ANDROID_extension_pack_es31a.txt">
       * Android Extension Pack</a>.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_OPENGLES_EXTENSION_PACK = "android.hardware.opengles.aep";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature(String, int)}: If this feature is supported, the Vulkan
       * implementation on this device is hardware accelerated, and the Vulkan native API will
       * enumerate at least one {@code VkPhysicalDevice}, and the feature version will indicate what
       * level of optional hardware features limits it supports.
       * <p>
       * Level 0 includes the base Vulkan requirements as well as:
       * <ul><li>{@code VkPhysicalDeviceFeatures::textureCompressionETC2}</li></ul>
       * <p>
       * Level 1 additionally includes:
       * <ul>
       * <li>{@code VkPhysicalDeviceFeatures::fullDrawIndexUint32}</li>
       * <li>{@code VkPhysicalDeviceFeatures::imageCubeArray}</li>
       * <li>{@code VkPhysicalDeviceFeatures::independentBlend}</li>
       * <li>{@code VkPhysicalDeviceFeatures::geometryShader}</li>
       * <li>{@code VkPhysicalDeviceFeatures::tessellationShader}</li>
       * <li>{@code VkPhysicalDeviceFeatures::sampleRateShading}</li>
       * <li>{@code VkPhysicalDeviceFeatures::textureCompressionASTC_LDR}</li>
       * <li>{@code VkPhysicalDeviceFeatures::fragmentStoresAndAtomics}</li>
       * <li>{@code VkPhysicalDeviceFeatures::shaderImageGatherExtended}</li>
       * <li>{@code VkPhysicalDeviceFeatures::shaderUniformBufferArrayDynamicIndexing}</li>
       * <li>{@code VkPhysicalDeviceFeatures::shaderSampledImageArrayDynamicIndexing}</li>
       * </ul>
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VULKAN_HARDWARE_LEVEL = "android.hardware.vulkan.level";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature(String, int)}: If this feature is supported, the Vulkan
       * implementation on this device is hardware accelerated, and the Vulkan native API will
       * enumerate at least one {@code VkPhysicalDevice}, and the feature version will indicate what
       * level of optional compute features that device supports beyond the Vulkan 1.0 requirements.
       * <p>
       * Compute level 0 indicates:
       * <ul>
       * <li>The {@code VK_KHR_variable_pointers} extension and
       *     {@code VkPhysicalDeviceVariablePointerFeaturesKHR::variablePointers} feature are
             supported.</li>
       * <li>{@code VkPhysicalDeviceLimits::maxPerStageDescriptorStorageBuffers} is at least 16.</li>
       * </ul>
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VULKAN_HARDWARE_COMPUTE = "android.hardware.vulkan.compute";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature(String, int)}: If this feature is supported, the Vulkan
       * implementation on this device is hardware accelerated, and the feature version will indicate
       * the highest {@code VkPhysicalDeviceProperties::apiVersion} supported by the physical devices
       * that support the hardware level indicated by {@link #FEATURE_VULKAN_HARDWARE_LEVEL}. The
       * feature version uses the same encoding as Vulkan version numbers:
       * <ul>
       * <li>Major version number in bits 31-22</li>
       * <li>Minor version number in bits 21-12</li>
       * <li>Patch version number in bits 11-0</li>
       * </ul>
       * A version of 1.1.0 or higher also indicates:
       * <ul>
       * <li>The {@code VK_ANDROID_external_memory_android_hardware_buffer} extension is
       *     supported.</li>
       * <li>{@code SYNC_FD} external semaphore and fence handles are supported.</li>
       * <li>{@code VkPhysicalDeviceSamplerYcbcrConversionFeatures::samplerYcbcrConversion} is
       *     supported.</li>
       * </ul>
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VULKAN_HARDWARE_VERSION = "android.hardware.vulkan.version";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes broadcast radio tuner.
       * @hide
       */
      @SystemApi
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_BROADCAST_RADIO = "android.hardware.broadcastradio";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a secure implementation of keyguard, meaning the
       * device supports PIN, pattern and password as defined in Android CDD
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SECURE_LOCK_SCREEN = "android.software.secure_lock_screen";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes an accelerometer.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_ACCELEROMETER = "android.hardware.sensor.accelerometer";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a barometer (air
       * pressure sensor.)
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_BAROMETER = "android.hardware.sensor.barometer";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a magnetometer (compass).
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_COMPASS = "android.hardware.sensor.compass";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a gyroscope.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_GYROSCOPE = "android.hardware.sensor.gyroscope";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a light sensor.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_LIGHT = "android.hardware.sensor.light";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a proximity sensor.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_PROXIMITY = "android.hardware.sensor.proximity";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a hardware step counter.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_STEP_COUNTER = "android.hardware.sensor.stepcounter";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a hardware step detector.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_STEP_DETECTOR = "android.hardware.sensor.stepdetector";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a heart rate monitor.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_HEART_RATE = "android.hardware.sensor.heartrate";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The heart rate sensor on this device is an Electrocardiogram.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_HEART_RATE_ECG =
              "android.hardware.sensor.heartrate.ecg";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes a relative humidity sensor.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_RELATIVE_HUMIDITY =
              "android.hardware.sensor.relative_humidity";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device includes an ambient temperature sensor.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SENSOR_AMBIENT_TEMPERATURE =
              "android.hardware.sensor.ambient_temperature";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports high fidelity sensor processing
       * capabilities.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_HIFI_SENSORS =
              "android.hardware.sensor.hifi_sensors";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports a hardware mechanism for invoking an assist gesture.
       * @see android.provider.Settings.Secure#ASSIST_GESTURE_ENABLED
       * @hide
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_ASSIST_GESTURE = "android.hardware.sensor.assist";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a telephony radio with data
       * communication support.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY = "android.hardware.telephony";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a CDMA telephony stack.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_CDMA = "android.hardware.telephony.cdma";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has a GSM telephony stack.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_GSM = "android.hardware.telephony.gsm";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports telephony carrier restriction mechanism.
       *
       * <p>Devices declaring this feature must have an implementation of the
       * {@link android.telephony.TelephonyManager#getAllowedCarriers} and
       * {@link android.telephony.TelephonyManager#setAllowedCarriers}.
       * @hide
       */
      @SystemApi
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_CARRIERLOCK =
              "android.hardware.telephony.carrierlock";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: The device
       * supports embedded subscriptions on eUICCs.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_EUICC = "android.hardware.telephony.euicc";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: The device
       * supports cell-broadcast reception using the MBMS APIs.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_MBMS = "android.hardware.telephony.mbms";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: The device
       * supports attaching to IMS implementations using the ImsService API in telephony.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEPHONY_IMS = "android.hardware.telephony.ims";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports connecting to USB devices
       * as the USB host.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_USB_HOST = "android.hardware.usb.host";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports connecting to USB accessories.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_USB_ACCESSORY = "android.hardware.usb.accessory";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The SIP API is enabled on the device.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SIP = "android.software.sip";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports SIP-based VOIP.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SIP_VOIP = "android.software.sip.voip";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The Connection Service API is enabled on the device.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CONNECTION_SERVICE = "android.software.connectionservice";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's display has a touch screen.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TOUCHSCREEN = "android.hardware.touchscreen";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's touch screen supports
       * multitouch sufficient for basic two-finger gesture detection.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TOUCHSCREEN_MULTITOUCH = "android.hardware.touchscreen.multitouch";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's touch screen is capable of
       * tracking two or more fingers fully independently.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT = "android.hardware.touchscreen.multitouch.distinct";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device's touch screen is capable of
       * tracking a full hand of fingers fully independently -- that is, 5 or
       * more simultaneous independent pointers.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TOUCHSCREEN_MULTITOUCH_JAZZHAND = "android.hardware.touchscreen.multitouch.jazzhand";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device does not have a touch screen, but
       * does support touch emulation for basic events. For instance, the
       * device might use a mouse or remote control to drive a cursor, and
       * emulate basic touch pointer events like down, up, drag, etc. All
       * devices that support android.hardware.touchscreen or a sub-feature are
       * presumed to also support faketouch.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FAKETOUCH = "android.hardware.faketouch";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device does not have a touch screen, but
       * does support touch emulation for basic events that supports distinct
       * tracking of two or more fingers.  This is an extension of
       * {@link #FEATURE_FAKETOUCH} for input devices with this capability.  Note
       * that unlike a distinct multitouch screen as defined by
       * {@link #FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT}, these kinds of input
       * devices will not actually provide full two-finger gestures since the
       * input is being transformed to cursor movement on the screen.  That is,
       * single finger gestures will move a cursor; two-finger swipes will
       * result in single-finger touch events; other two-finger gestures will
       * result in the corresponding two-finger touch event.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FAKETOUCH_MULTITOUCH_DISTINCT = "android.hardware.faketouch.multitouch.distinct";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device does not have a touch screen, but
       * does support touch emulation for basic events that supports tracking
       * a hand of fingers (5 or more fingers) fully independently.
       * This is an extension of
       * {@link #FEATURE_FAKETOUCH} for input devices with this capability.  Note
       * that unlike a multitouch screen as defined by
       * {@link #FEATURE_TOUCHSCREEN_MULTITOUCH_JAZZHAND}, not all two finger
       * gestures can be detected due to the limitations described for
       * {@link #FEATURE_FAKETOUCH_MULTITOUCH_DISTINCT}.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FAKETOUCH_MULTITOUCH_JAZZHAND = "android.hardware.faketouch.multitouch.jazzhand";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has biometric hardware to detect a fingerprint.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FINGERPRINT = "android.hardware.fingerprint";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has biometric hardware to perform face authentication.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FACE = "android.hardware.biometrics.face";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device has biometric hardware to perform iris authentication.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_IRIS = "android.hardware.biometrics.iris";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports portrait orientation
       * screens.  For backwards compatibility, you can assume that if neither
       * this nor {@link #FEATURE_SCREEN_LANDSCAPE} is set then the device supports
       * both portrait and landscape.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SCREEN_PORTRAIT = "android.hardware.screen.portrait";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports landscape orientation
       * screens.  For backwards compatibility, you can assume that if neither
       * this nor {@link #FEATURE_SCREEN_PORTRAIT} is set then the device supports
       * both portrait and landscape.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SCREEN_LANDSCAPE = "android.hardware.screen.landscape";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports live wallpapers.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LIVE_WALLPAPER = "android.software.live_wallpaper";
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports app widgets.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_APP_WIDGETS = "android.software.app_widgets";
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports the
       * {@link android.R.attr#cantSaveState} API.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_CANT_SAVE_STATE = "android.software.cant_save_state";
  
      /**
       * @hide
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports
       * {@link android.service.voice.VoiceInteractionService} and
       * {@link android.app.VoiceInteractor}.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VOICE_RECOGNIZERS = "android.software.voice_recognizers";
  
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports a home screen that is replaceable
       * by third party applications.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_HOME_SCREEN = "android.software.home_screen";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports adding new input methods implemented
       * with the {@link android.inputmethodservice.InputMethodService} API.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_INPUT_METHODS = "android.software.input_methods";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports device policy enforcement via device admins.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_DEVICE_ADMIN = "android.software.device_admin";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports leanback UI. This is
       * typically used in a living room television experience, but is a software
       * feature unlike {@link #FEATURE_TELEVISION}. Devices running with this
       * feature will use resources associated with the "television" UI mode.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LEANBACK = "android.software.leanback";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports only leanback UI. Only
       * applications designed for this experience should be run, though this is
       * not enforced by the system.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LEANBACK_ONLY = "android.software.leanback_only";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports live TV and can display
       * contents from TV inputs implemented with the
       * {@link android.media.tv.TvInputService} API.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LIVE_TV = "android.software.live_tv";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports WiFi (802.11) networking.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WIFI = "android.hardware.wifi";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports Wi-Fi Direct networking.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WIFI_DIRECT = "android.hardware.wifi.direct";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports Wi-Fi Aware.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WIFI_AWARE = "android.hardware.wifi.aware";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports Wi-Fi Passpoint and all
       * Passpoint related APIs in {@link WifiManager} are supported. Refer to
       * {@link WifiManager#addOrUpdatePasspointConfiguration} for more info.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WIFI_PASSPOINT = "android.hardware.wifi.passpoint";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports Wi-Fi RTT (IEEE 802.11mc).
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WIFI_RTT = "android.hardware.wifi.rtt";
  
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports LoWPAN networking.
       * @hide
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_LOWPAN = "android.hardware.lowpan";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This is a device dedicated to showing UI
       * on a vehicle headunit. A headunit here is defined to be inside a
       * vehicle that may or may not be moving. A headunit uses either a
       * primary display in the center console and/or additional displays in
       * the instrument cluster or elsewhere in the vehicle. Headunit display(s)
       * have limited size and resolution. The user will likely be focused on
       * driving so limiting driver distraction is a primary concern. User input
       * can be a variety of hard buttons, touch, rotary controllers and even mouse-
       * like interfaces.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_AUTOMOTIVE = "android.hardware.type.automotive";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This is a device dedicated to showing UI
       * on a television.  Television here is defined to be a typical living
       * room television experience: displayed on a big screen, where the user
       * is sitting far away from it, and the dominant form of input will be
       * something like a DPAD, not through touch or mouse.
       * @deprecated use {@link #FEATURE_LEANBACK} instead.
       */
      @Deprecated
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_TELEVISION = "android.hardware.type.television";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This is a device dedicated to showing UI
       * on a watch. A watch here is defined to be a device worn on the body, perhaps on
       * the wrist. The user is very close when interacting with the device.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WATCH = "android.hardware.type.watch";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This is a device for IoT and may not have an UI. An embedded
       * device is defined as a full stack Android device with or without a display and no
       * user-installable apps.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_EMBEDDED = "android.hardware.type.embedded";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This is a device dedicated to be primarily used
       * with keyboard, mouse or touchpad. This includes traditional desktop
       * computers, laptops and variants such as convertibles or detachables.
       * Due to the larger screen, the device will most likely use the
       * {@link #FEATURE_FREEFORM_WINDOW_MANAGEMENT} feature as well.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_PC = "android.hardware.type.pc";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports printing.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_PRINTING = "android.software.print";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports {@link android.companion.CompanionDeviceManager#associate associating}
       * with devices via {@link android.companion.CompanionDeviceManager}.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_COMPANION_DEVICE_SETUP
              = "android.software.companion_device_setup";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device can perform backup and restore operations on installed applications.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_BACKUP = "android.software.backup";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: The device supports freeform window management.
       * Windows have title bars and can be moved and resized.
       */
      // If this feature is present, you also need to set
      // com.android.internal.R.config_freeformWindowManagement to true in your configuration overlay.
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FREEFORM_WINDOW_MANAGEMENT
              = "android.software.freeform_window_management";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports picture-in-picture multi-window mode.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_PICTURE_IN_PICTURE = "android.software.picture_in_picture";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports running activities on secondary displays.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_ACTIVITIES_ON_SECONDARY_DISPLAYS
              = "android.software.activities_on_secondary_displays";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports creating secondary users and managed profiles via
       * {@link DevicePolicyManager}.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_MANAGED_USERS = "android.software.managed_users";
  
      /**
       * @hide
       * TODO: Remove after dependencies updated b/17392243
       */
      public static final String FEATURE_MANAGED_PROFILES = "android.software.managed_users";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports verified boot.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VERIFIED_BOOT = "android.software.verified_boot";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports secure removal of users. When a user is deleted the data associated
       * with that user is securely deleted and no longer available.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_SECURELY_REMOVES_USERS
              = "android.software.securely_removes_users";
  
      /** {@hide} */
      @TestApi
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_FILE_BASED_ENCRYPTION
              = "android.software.file_based_encryption";
  
      /** {@hide} */
      @TestApi
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_ADOPTABLE_STORAGE
              = "android.software.adoptable_storage";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has a full implementation of the android.webkit.* APIs. Devices
       * lacking this feature will not have a functioning WebView implementation.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_WEBVIEW = "android.software.webview";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This device supports ethernet.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_ETHERNET = "android.hardware.ethernet";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and
       * {@link #hasSystemFeature}: This device supports HDMI-CEC.
       * @hide
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_HDMI_CEC = "android.hardware.hdmi.cec";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has all of the inputs necessary to be considered a compatible game controller, or
       * includes a compatible game controller in the box.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_GAMEPAD = "android.hardware.gamepad";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has a full implementation of the android.media.midi.* APIs.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_MIDI = "android.software.midi";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device implements an optimized mode for virtual reality (VR) applications that handles
       * stereoscopic rendering of notifications, and disables most monocular system UI components
       * while a VR application has user focus.
       * Devices declaring this feature must include an application implementing a
       * {@link android.service.vr.VrListenerService} that can be targeted by VR applications via
       * {@link android.app.Activity#setVrModeEnabled}.
       * @deprecated use {@link #FEATURE_VR_MODE_HIGH_PERFORMANCE} instead.
       */
      @Deprecated
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VR_MODE = "android.software.vr.mode";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device implements an optimized mode for virtual reality (VR) applications that handles
       * stereoscopic rendering of notifications, disables most monocular system UI components
       * while a VR application has user focus and meets extra CDD requirements to provide a
       * high-quality VR experience.
       * Devices declaring this feature must include an application implementing a
       * {@link android.service.vr.VrListenerService} that can be targeted by VR applications via
       * {@link android.app.Activity#setVrModeEnabled}.
       * and must meet CDD requirements to provide a high-quality VR experience.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VR_MODE_HIGH_PERFORMANCE
              = "android.hardware.vr.high_performance";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device supports autofill of user credentials, addresses, credit cards, etc
       * via integration with {@link android.service.autofill.AutofillService autofill
       * providers}.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_AUTOFILL = "android.software.autofill";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device implements headtracking suitable for a VR device.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_VR_HEADTRACKING = "android.hardware.vr.headtracking";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has a StrongBox hardware-backed Keystore.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_STRONGBOX_KEYSTORE =
              "android.hardware.strongbox_keystore";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}:
       * The device has a Keymaster implementation that supports Device ID attestation.
       *
       * @see DevicePolicyManager#isDeviceIdAttestationSupported
       * @hide
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_DEVICE_ID_ATTESTATION =
              "android.software.device_id_attestation";
  
      /**
       * Feature for {@link #getSystemAvailableFeatures} and {@link #hasSystemFeature}: The device has
       * the requisite kernel support for multinetworking-capable IPsec tunnels.
       *
       * <p>This feature implies that the device supports XFRM Interfaces (CONFIG_XFRM_INTERFACE), or
       * VTIs with kernel patches allowing updates of output/set mark via UPDSA.
       */
      @SdkConstant(SdkConstantType.FEATURE)
      public static final String FEATURE_IPSEC_TUNNELS = "android.software.ipsec_tunnels";
  
      /**
       * Extra field name for the URI to a verification file. Passed to a package
       * verifier.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_URI = "android.content.pm.extra.VERIFICATION_URI";
  
      /**
       * Extra field name for the ID of a package pending verification. Passed to
       * a package verifier and is used to call back to
       * {@link PackageManager#verifyPendingInstall(int, int)}
       */
      public static final String EXTRA_VERIFICATION_ID = "android.content.pm.extra.VERIFICATION_ID";
  
      /**
       * Extra field name for the package identifier which is trying to install
       * the package.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_INSTALLER_PACKAGE
              = "android.content.pm.extra.VERIFICATION_INSTALLER_PACKAGE";
  
      /**
       * Extra field name for the requested install flags for a package pending
       * verification. Passed to a package verifier.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_INSTALL_FLAGS
              = "android.content.pm.extra.VERIFICATION_INSTALL_FLAGS";
  
      /**
       * Extra field name for the uid of who is requesting to install
       * the package.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_INSTALLER_UID
              = "android.content.pm.extra.VERIFICATION_INSTALLER_UID";
  
      /**
       * Extra field name for the package name of a package pending verification.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_PACKAGE_NAME
              = "android.content.pm.extra.VERIFICATION_PACKAGE_NAME";
      /**
       * Extra field name for the result of a verification, either
       * {@link #VERIFICATION_ALLOW}, or {@link #VERIFICATION_REJECT}.
       * Passed to package verifiers after a package is verified.
       */
      public static final String EXTRA_VERIFICATION_RESULT
              = "android.content.pm.extra.VERIFICATION_RESULT";
  
      /**
       * Extra field name for the version code of a package pending verification.
       * @deprecated Use {@link #EXTRA_VERIFICATION_LONG_VERSION_CODE} instead.
       * @hide
       */
      @Deprecated
      public static final String EXTRA_VERIFICATION_VERSION_CODE
              = "android.content.pm.extra.VERIFICATION_VERSION_CODE";
  
      /**
       * Extra field name for the long version code of a package pending verification.
       *
       * @hide
       */
      public static final String EXTRA_VERIFICATION_LONG_VERSION_CODE =
              "android.content.pm.extra.VERIFICATION_LONG_VERSION_CODE";
  
      /**
       * Extra field name for the ID of a intent filter pending verification.
       * Passed to an intent filter verifier and is used to call back to
       * {@link #verifyIntentFilter}
       *
       * @hide
       */
      public static final String EXTRA_INTENT_FILTER_VERIFICATION_ID
              = "android.content.pm.extra.INTENT_FILTER_VERIFICATION_ID";
  
      /**
       * Extra field name for the scheme used for an intent filter pending verification. Passed to
       * an intent filter verifier and is used to construct the URI to verify against.
       *
       * Usually this is "https"
       *
       * @hide
       */
      public static final String EXTRA_INTENT_FILTER_VERIFICATION_URI_SCHEME
              = "android.content.pm.extra.INTENT_FILTER_VERIFICATION_URI_SCHEME";
  
      /**
       * Extra field name for the host names to be used for an intent filter pending verification.
       * Passed to an intent filter verifier and is used to construct the URI to verify the
       * intent filter.
       *
       * This is a space delimited list of hosts.
       *
       * @hide
       */
      public static final String EXTRA_INTENT_FILTER_VERIFICATION_HOSTS
              = "android.content.pm.extra.INTENT_FILTER_VERIFICATION_HOSTS";
  
      /**
       * Extra field name for the package name to be used for an intent filter pending verification.
       * Passed to an intent filter verifier and is used to check the verification responses coming
       * from the hosts. Each host response will need to include the package name of APK containing
       * the intent filter.
       *
       * @hide
       */
      public static final String EXTRA_INTENT_FILTER_VERIFICATION_PACKAGE_NAME
              = "android.content.pm.extra.INTENT_FILTER_VERIFICATION_PACKAGE_NAME";
  
      /**
       * The action used to request that the user approve a permission request
       * from the application.
       *
       * @hide
       */
      @SystemApi
      public static final String ACTION_REQUEST_PERMISSIONS =
              "android.content.pm.action.REQUEST_PERMISSIONS";
  
      /**
       * The names of the requested permissions.
       * <p>
       * <strong>Type:</strong> String[]
       * </p>
       *
       * @hide
       */
      @SystemApi
      public static final String EXTRA_REQUEST_PERMISSIONS_NAMES =
              "android.content.pm.extra.REQUEST_PERMISSIONS_NAMES";
  
      /**
       * The results from the permissions request.
       * <p>
       * <strong>Type:</strong> int[] of #PermissionResult
       * </p>
       *
       * @hide
       */
      @SystemApi
      public static final String EXTRA_REQUEST_PERMISSIONS_RESULTS
              = "android.content.pm.extra.REQUEST_PERMISSIONS_RESULTS";
  
      /**
       * String extra for {@link PackageInstallObserver} in the 'extras' Bundle in case of
       * {@link #INSTALL_FAILED_DUPLICATE_PERMISSION}.  This extra names the package which provides
       * the existing definition for the permission.
       * @hide
       */
      public static final String EXTRA_FAILURE_EXISTING_PACKAGE
              = "android.content.pm.extra.FAILURE_EXISTING_PACKAGE";
  
      /**
       * String extra for {@link PackageInstallObserver} in the 'extras' Bundle in case of
       * {@link #INSTALL_FAILED_DUPLICATE_PERMISSION}.  This extra names the permission that is
       * being redundantly defined by the package being installed.
       * @hide
       */
      public static final String EXTRA_FAILURE_EXISTING_PERMISSION
              = "android.content.pm.extra.FAILURE_EXISTING_PERMISSION";
  
     /**
      * Permission flag: The permission is set in its current state
      * by the user and apps can still request it at runtime.
      *
      * @hide
      */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_USER_SET = 1 << 0;
  
      /**
       * Permission flag: The permission is set in its current state
       * by the user and it is fixed, i.e. apps can no longer request
       * this permission.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_USER_FIXED =  1 << 1;
  
      /**
       * Permission flag: The permission is set in its current state
       * by device policy and neither apps nor the user can change
       * its state.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_POLICY_FIXED =  1 << 2;
  
      /**
       * Permission flag: The permission is set in a granted state but
       * access to resources it guards is restricted by other means to
       * enable revoking a permission on legacy apps that do not support
       * runtime permissions. If this permission is upgraded to runtime
       * because the app was updated to support runtime permissions, the
       * the permission will be revoked in the upgrade process.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_REVOKE_ON_UPGRADE =  1 << 3;
  
      /**
       * Permission flag: The permission is set in its current state
       * because the app is a component that is a part of the system.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_SYSTEM_FIXED =  1 << 4;
  
      /**
       * Permission flag: The permission is granted by default because it
       * enables app functionality that is expected to work out-of-the-box
       * for providing a smooth user experience. For example, the phone app
       * is expected to have the phone permission.
       *
       * @hide
       */
      @SystemApi
      public static final int FLAG_PERMISSION_GRANTED_BY_DEFAULT =  1 << 5;
  
      /**
       * Permission flag: The permission has to be reviewed before any of
       * the app components can run.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_REVIEW_REQUIRED =  1 << 6;
  
      /**
       * Permission flag: The permission has not been explicitly requested by
       * the app but has been added automatically by the system. Revoke once
       * the app does explicitly request it.
       *
       * @hide
       */
      @TestApi
      public static final int FLAG_PERMISSION_REVOKE_WHEN_REQUESTED =  1 << 7;
  
      /**
       * Permission flag: The permission's usage should be made highly visible to the user
       * when granted.
       *
       * @hide
       */
      @SystemApi
      public static final int FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED =  1 << 8;
  
      /**
       * Permission flag: The permission's usage should be made highly visible to the user
       * when denied.
       *
       * @hide
       */
      @SystemApi
      public static final int FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED =  1 << 9;
  
      /**
       * Permission flag: The permission is restricted but the app is exempt
       * from the restriction and is allowed to hold this permission in its
       * full form and the exemption is provided by the installer on record.
       *
       * @hide
       */
      @TestApi
      @SystemApi
      public static final int FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT =  1 << 11;
  
      /**
       * Permission flag: The permission is restricted but the app is exempt
       * from the restriction and is allowed to hold this permission in its
       * full form and the exemption is provided by the system due to its
       * permission policy.
       *
       * @hide
       */
      @TestApi
      @SystemApi
      public static final int FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT =  1 << 12;
  
      /**
       * Permission flag: The permission is restricted but the app is exempt
       * from the restriction and is allowed to hold this permission and the
       * exemption is provided by the system when upgrading from an OS version
       * where the permission was not restricted to an OS version where the
       * permission is restricted.
       *
       * @hide
       */
      @TestApi
      @SystemApi
      public static final int FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT =  1 << 13;
  
  
      /**
       * Permission flag: The permission is disabled but may be granted. If
       * disabled the data protected by the permission should be protected
       * by a no-op (empty list, default error, etc) instead of crashing the
       * client.
       *
       * @hide
       */
      @TestApi
      @SystemApi
      public static final int FLAG_PERMISSION_APPLY_RESTRICTION =  1 << 14;
  
      /**
       * Permission flag: The permission is granted because the application holds a role.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      public static final int FLAG_PERMISSION_GRANTED_BY_ROLE =  1 << 15;
  
      /**
       * Permission flags: Bitwise or of all permission flags allowing an
       * exemption for a restricted permission.
       * @hide
       */
      public static final int FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT =
              FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT
                      | FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT
                      | FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
  
      /**
       * Mask for all permission flags.
       *
       * @hide
       *
       * @deprecated Don't use - does not capture all flags.
       */
      @Deprecated
      @SystemApi
      public static final int MASK_PERMISSION_FLAGS = 0xFF;
  
      /**
       * Mask for all permission flags.
       *
       * @hide
       */
      public static final int MASK_PERMISSION_FLAGS_ALL = FLAG_PERMISSION_USER_SET
              | FLAG_PERMISSION_USER_FIXED
              | FLAG_PERMISSION_POLICY_FIXED
              | FLAG_PERMISSION_REVOKE_ON_UPGRADE
              | FLAG_PERMISSION_SYSTEM_FIXED
              | FLAG_PERMISSION_GRANTED_BY_DEFAULT
              | FLAG_PERMISSION_REVIEW_REQUIRED
              | FLAG_PERMISSION_REVOKE_WHEN_REQUESTED
              | FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED
              | FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED
              | FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT
              | FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT
              | FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT
              | FLAG_PERMISSION_APPLY_RESTRICTION
              | FLAG_PERMISSION_GRANTED_BY_ROLE;
  
      /**
       * Injected activity in app that forwards user to setting activity of that app.
       *
       * @hide
       */
      public static final String APP_DETAILS_ACTIVITY_CLASS_NAME = AppDetailsActivity.class.getName();
  
      /**
       * Permission whitelist flag: permissions whitelisted by the system.
       * Permissions can also be whitelisted by the installer or on upgrade.
       */
      public static final int FLAG_PERMISSION_WHITELIST_SYSTEM = 1 << 0;
  
      /**
       * Permission whitelist flag: permissions whitelisted by the installer.
       * Permissions can also be whitelisted by the system or on upgrade.
       */
      public static final int FLAG_PERMISSION_WHITELIST_INSTALLER = 1 << 1;
  
      /**
       * Permission whitelist flag: permissions whitelisted by the system
       * when upgrading from an OS version where the permission was not
       * restricted to an OS version where the permission is restricted.
       * Permissions can also be whitelisted by the installer or the system.
       */
      public static final int FLAG_PERMISSION_WHITELIST_UPGRADE = 1 << 2;
  
      /** @hide */
      @IntDef(flag = true, prefix = {"FLAG_PERMISSION_WHITELIST_"}, value = {
              FLAG_PERMISSION_WHITELIST_SYSTEM,
              FLAG_PERMISSION_WHITELIST_INSTALLER,
              FLAG_PERMISSION_WHITELIST_UPGRADE
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PermissionWhitelistFlags {}
  
      /**
       * This is a library that contains components apps can invoke. For
       * example, a services for apps to bind to, or standard chooser UI,
       * etc. This library is versioned and backwards compatible. Clients
       * should check its version via {@link android.ext.services.Version
       * #getVersionCode()} and avoid calling APIs added in later versions.
       *
       * @hide
       */
      @TestApi
      public static final String SYSTEM_SHARED_LIBRARY_SERVICES = "android.ext.services";
  
      /**
       * This is a library that contains components apps can dynamically
       * load. For example, new widgets, helper classes, etc. This library
       * is versioned and backwards compatible. Clients should check its
       * version via {@link android.ext.shared.Version#getVersionCode()}
       * and avoid calling APIs added in later versions.
       *
       * @hide
       */
      @TestApi
      public static final String SYSTEM_SHARED_LIBRARY_SHARED = "android.ext.shared";
  
      /**
       * Used when starting a process for an Activity.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_ACTIVITY = 0;
  
      /**
       * Used when starting a process for a Service.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_SERVICE = 1;
  
      /**
       * Used when moving a Service to the foreground.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_FOREGROUND_SERVICE = 2;
  
      /**
       * Used when starting a process for a BroadcastReceiver.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_BROADCAST_RECEIVER = 3;
  
      /**
       * Used when starting a process for a ContentProvider.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_CONTENT_PROVIDER = 4;
  
      /**
       * Used when starting a process for a BroadcastReceiver.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_BACKUP = 5;
  
      /**
       * Used with Context.getClassLoader() across Android packages.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_CROSS_PACKAGE = 6;
  
      /**
       * Used when starting a package within a process for Instrumentation.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_INSTRUMENTATION = 7;
  
      /**
       * Total number of usage reasons.
       *
       * @hide
       */
      public static final int NOTIFY_PACKAGE_USE_REASONS_COUNT = 8;
  
      /**
       * Constant for specifying the highest installed package version code.
       */
      public static final int VERSION_CODE_HIGHEST = -1;
  
      /** {@hide} */
      public int getUserId() {
          return UserHandle.myUserId();
      }
  
      /**
       * Retrieve overall information about an application package that is
       * installed on the system.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @param flags Additional option flags to modify the data returned.
       * @return A PackageInfo object containing information about the package. If
       *         flag {@code MATCH_UNINSTALLED_PACKAGES} is set and if the package
       *         is not found in the list of installed applications, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      public abstract PackageInfo getPackageInfo(@NonNull String packageName,
              @PackageInfoFlags int flags)
              throws NameNotFoundException;
  
      /**
       * Retrieve overall information about an application package that is
       * installed on the system. This method can be used for retrieving
       * information about packages for which multiple versions can be installed
       * at the time. Currently only packages hosting static shared libraries can
       * have multiple installed versions. The method can also be used to get info
       * for a package that has a single version installed by passing
       * {@link #VERSION_CODE_HIGHEST} in the {@link VersionedPackage}
       * constructor.
       *
       * @param versionedPackage The versioned package for which to query.
       * @param flags Additional option flags to modify the data returned.
       * @return A PackageInfo object containing information about the package. If
       *         flag {@code MATCH_UNINSTALLED_PACKAGES} is set and if the package
       *         is not found in the list of installed applications, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      public abstract PackageInfo getPackageInfo(@NonNull VersionedPackage versionedPackage,
              @PackageInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve overall information about an application package that is
       * installed on the system.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user id.
       * @return A PackageInfo object containing information about the package. If
       *         flag {@code MATCH_UNINSTALLED_PACKAGES} is set and if the package
       *         is not found in the list of installed applications, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       * @hide
       */
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      @UnsupportedAppUsage
      public abstract PackageInfo getPackageInfoAsUser(@NonNull String packageName,
              @PackageInfoFlags int flags, @UserIdInt int userId) throws NameNotFoundException;
  
      /**
       * Map from the current package names in use on the device to whatever
       * the current canonical name of that package is.
       * @param packageNames Array of current names to be mapped.
       * @return Returns an array of the same size as the original, containing
       * the canonical name for each package.
       */
      public abstract String[] currentToCanonicalPackageNames(@NonNull String[] packageNames);
  
      /**
       * Map from a packages canonical name to the current name in use on the device.
       * @param packageNames Array of new names to be mapped.
       * @return Returns an array of the same size as the original, containing
       * the current name for each package.
       */
      public abstract String[] canonicalToCurrentPackageNames(@NonNull String[] packageNames);
  
      /**
       * Returns a "good" intent to launch a front-door activity in a package.
       * This is used, for example, to implement an "open" button when browsing
       * through packages.  The current implementation looks first for a main
       * activity in the category {@link Intent#CATEGORY_INFO}, and next for a
       * main activity in the category {@link Intent#CATEGORY_LAUNCHER}. Returns
       * <code>null</code> if neither are found.
       *
       * @param packageName The name of the package to inspect.
       *
       * @return A fully-qualified {@link Intent} that can be used to launch the
       * main activity in the package. Returns <code>null</code> if the package
       * does not contain such an activity, or if <em>packageName</em> is not
       * recognized.
       */
      public abstract @Nullable Intent getLaunchIntentForPackage(@NonNull String packageName);
  
      /**
       * Return a "good" intent to launch a front-door Leanback activity in a
       * package, for use for example to implement an "open" button when browsing
       * through packages. The current implementation will look for a main
       * activity in the category {@link Intent#CATEGORY_LEANBACK_LAUNCHER}, or
       * return null if no main leanback activities are found.
       *
       * @param packageName The name of the package to inspect.
       * @return Returns either a fully-qualified Intent that can be used to launch
       *         the main Leanback activity in the package, or null if the package
       *         does not contain such an activity.
       */
      public abstract @Nullable Intent getLeanbackLaunchIntentForPackage(@NonNull String packageName);
  
      /**
       * Return a "good" intent to launch a front-door Car activity in a
       * package, for use for example to implement an "open" button when browsing
       * through packages. The current implementation will look for a main
       * activity in the category {@link Intent#CATEGORY_CAR_LAUNCHER}, or
       * return null if no main car activities are found.
       *
       * @param packageName The name of the package to inspect.
       * @return Returns either a fully-qualified Intent that can be used to launch
       *         the main Car activity in the package, or null if the package
       *         does not contain such an activity.
       * @hide
       */
      public abstract @Nullable Intent getCarLaunchIntentForPackage(@NonNull String packageName);
  
      /**
       * Return an array of all of the POSIX secondary group IDs that have been
       * assigned to the given package.
       * <p>
       * Note that the same package may have different GIDs under different
       * {@link UserHandle} on the same device.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @return Returns an int array of the assigned GIDs, or null if there are
       *         none.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      public abstract int[] getPackageGids(@NonNull String packageName)
              throws NameNotFoundException;
  
      /**
       * Return an array of all of the POSIX secondary group IDs that have been
       * assigned to the given package.
       * <p>
       * Note that the same package may have different GIDs under different
       * {@link UserHandle} on the same device.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @return Returns an int array of the assigned gids, or null if there are
       *         none.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      public abstract int[] getPackageGids(@NonNull String packageName, @PackageInfoFlags int flags)
              throws NameNotFoundException;
  
      /**
       * Return the UID associated with the given package name.
       * <p>
       * Note that the same package will have different UIDs under different
       * {@link UserHandle} on the same device.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @return Returns an integer UID who owns the given package name.
       * @throws NameNotFoundException if a package with the given name can not be
       *             found on the system.
       */
      public abstract int getPackageUid(@NonNull String packageName, @PackageInfoFlags int flags)
              throws NameNotFoundException;
  
      /**
       * Return the UID associated with the given package name.
       * <p>
       * Note that the same package will have different UIDs under different
       * {@link UserHandle} on the same device.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @param userId The user handle identifier to look up the package under.
       * @return Returns an integer UID who owns the given package name.
       * @throws NameNotFoundException if a package with the given name can not be
       *             found on the system.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract int getPackageUidAsUser(@NonNull String packageName, @UserIdInt int userId)
              throws NameNotFoundException;
  
      /**
       * Return the UID associated with the given package name.
       * <p>
       * Note that the same package will have different UIDs under different
       * {@link UserHandle} on the same device.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of the
       *            desired package.
       * @param userId The user handle identifier to look up the package under.
       * @return Returns an integer UID who owns the given package name.
       * @throws NameNotFoundException if a package with the given name can not be
       *             found on the system.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract int getPackageUidAsUser(@NonNull String packageName,
              @PackageInfoFlags int flags, @UserIdInt int userId) throws NameNotFoundException;
  
      /**
       * Retrieve all of the information we know about a particular permission.
       *
       * @param permissionName The fully qualified name (i.e. com.google.permission.LOGIN)
       *            of the permission you are interested in.
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a {@link PermissionInfo} containing information about the
       *         permission.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      public abstract PermissionInfo getPermissionInfo(@NonNull String permissionName,
              @PermissionInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Query for all of the permissions associated with a particular group.
       *
       * @param permissionGroup The fully qualified name (i.e. com.google.permission.LOGIN)
       *            of the permission group you are interested in. Use null to
       *            find all of the permissions not associated with a group.
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a list of {@link PermissionInfo} containing information
       *         about all of the permissions in the given group.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract List<PermissionInfo> queryPermissionsByGroup(@NonNull String permissionGroup,
              @PermissionInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Returns true if some permissions are individually controlled.
       *
       * <p>The user usually grants and revokes permission-groups. If this option is set some
       * dangerous system permissions can be revoked/granted by the user separately from their group.
       *
       * @hide
       */
      @TestApi @SystemApi
      public abstract boolean arePermissionsIndividuallyControlled();
  
      /**
       * Returns true if wireless consent mode is enabled
       *
       * @hide
       */
      public abstract boolean isWirelessConsentModeEnabled();
  
      /**
       * Retrieve all of the information we know about a particular group of
       * permissions.
       *
       * @param permissionName The fully qualified name (i.e.
       *            com.google.permission_group.APPS) of the permission you are
       *            interested in.
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a {@link PermissionGroupInfo} containing information
       *         about the permission.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract PermissionGroupInfo getPermissionGroupInfo(@NonNull String permissionName,
              @PermissionGroupInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve all of the known permission groups in the system.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a list of {@link PermissionGroupInfo} containing
       *         information about all of the known permission groups.
       */
      @NonNull
      public abstract List<PermissionGroupInfo> getAllPermissionGroups(
              @PermissionGroupInfoFlags int flags);
  
      /**
       * Retrieve all of the information we know about a particular
       * package/application.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of an
       *            application.
       * @param flags Additional option flags to modify the data returned.
       * @return An {@link ApplicationInfo} containing information about the
       *         package. If flag {@code MATCH_UNINSTALLED_PACKAGES} is set and if
       *         the package is not found in the list of installed applications,
       *         the application information is retrieved from the list of
       *         uninstalled applications (which includes installed applications
       *         as well as applications with data directory i.e. applications
       *         which had been deleted with {@code DONT_DELETE_DATA} flag set).
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract ApplicationInfo getApplicationInfo(@NonNull String packageName,
              @ApplicationInfoFlags int flags) throws NameNotFoundException;
  
      /** {@hide} */
      @NonNull
      @UnsupportedAppUsage
      public abstract ApplicationInfo getApplicationInfoAsUser(@NonNull String packageName,
              @ApplicationInfoFlags int flags, @UserIdInt int userId) throws NameNotFoundException;
  
      /**
       * Retrieve all of the information we know about a particular
       * package/application, for a specific user.
       *
       * @param packageName The full name (i.e. com.google.apps.contacts) of an
       *            application.
       * @param flags Additional option flags to modify the data returned.
       * @return An {@link ApplicationInfo} containing information about the
       *         package. If flag {@code MATCH_UNINSTALLED_PACKAGES} is set and if
       *         the package is not found in the list of installed applications,
       *         the application information is retrieved from the list of
       *         uninstalled applications (which includes installed applications
       *         as well as applications with data directory i.e. applications
       *         which had been deleted with {@code DONT_DELETE_DATA} flag set).
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       * @hide
       */
      @NonNull
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      @SystemApi
      public ApplicationInfo getApplicationInfoAsUser(@NonNull String packageName,
              @ApplicationInfoFlags int flags, @NonNull UserHandle user)
              throws NameNotFoundException {
          return getApplicationInfoAsUser(packageName, flags, user.getIdentifier());
      }
  
      /**
       * Retrieve all of the information we know about a particular activity
       * class.
       *
       * @param component The full component name (i.e.
       *            com.google.apps.contacts/com.google.apps.contacts.
       *            ContactsList) of an Activity class.
       * @param flags Additional option flags to modify the data returned.
       * @return An {@link ActivityInfo} containing information about the
       *         activity.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract ActivityInfo getActivityInfo(@NonNull ComponentName component,
              @ComponentInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve all of the information we know about a particular receiver
       * class.
       *
       * @param component The full component name (i.e.
       *            com.google.apps.calendar/com.google.apps.calendar.
       *            CalendarAlarm) of a Receiver class.
       * @param flags Additional option flags to modify the data returned.
       * @return An {@link ActivityInfo} containing information about the
       *         receiver.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract ActivityInfo getReceiverInfo(@NonNull ComponentName component,
              @ComponentInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve all of the information we know about a particular service class.
       *
       * @param component The full component name (i.e.
       *            com.google.apps.media/com.google.apps.media.
       *            BackgroundPlayback) of a Service class.
       * @param flags Additional option flags to modify the data returned.
       * @return A {@link ServiceInfo} object containing information about the
       *         service.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract ServiceInfo getServiceInfo(@NonNull ComponentName component,
              @ComponentInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve all of the information we know about a particular content
       * provider class.
       *
       * @param component The full component name (i.e.
       *            com.google.providers.media/com.google.providers.media.
       *            MediaProvider) of a ContentProvider class.
       * @param flags Additional option flags to modify the data returned.
       * @return A {@link ProviderInfo} object containing information about the
       *         provider.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract ProviderInfo getProviderInfo(@NonNull ComponentName component,
              @ComponentInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve information for a particular module.
       *
       * @param packageName The name of the module.
       * @param flags Additional option flags to modify the data returned.
       * @return A {@link ModuleInfo} object containing information about the
       *         module.
       * @throws NameNotFoundException if a module with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public ModuleInfo getModuleInfo(@NonNull String packageName, @ModuleInfoFlags int flags)
              throws NameNotFoundException {
          throw new UnsupportedOperationException(
                  "getModuleInfo not implemented in subclass");
      }
  
      /**
       * Return a List of all modules that are installed.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return A {@link List} of {@link ModuleInfo} objects, one for each installed
       *         module, containing information about the module. In the unlikely case
       *         there are no installed modules, an empty list is returned.
       */
      @NonNull
      public List<ModuleInfo> getInstalledModules(@ModuleInfoFlags int flags) {
          throw new UnsupportedOperationException(
                  "getInstalledModules not implemented in subclass");
      }
  
      /**
       * Return a List of all packages that are installed for the current user.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return A List of PackageInfo objects, one for each installed package,
       *         containing information about the package. In the unlikely case
       *         there are no installed packages, an empty list is returned. If
       *         flag {@code MATCH_UNINSTALLED_PACKAGES} is set, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       */
      @NonNull
      public abstract List<PackageInfo> getInstalledPackages(@PackageInfoFlags int flags);
  
      /**
       * Return a List of all installed packages that are currently holding any of
       * the given permissions.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return A List of PackageInfo objects, one for each installed package
       *         that holds any of the permissions that were provided, containing
       *         information about the package. If no installed packages hold any
       *         of the permissions, an empty list is returned. If flag
       *         {@code MATCH_UNINSTALLED_PACKAGES} is set, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       */
      @NonNull
      public abstract List<PackageInfo> getPackagesHoldingPermissions(
              @NonNull String[] permissions, @PackageInfoFlags int flags);
  
      /**
       * Return a List of all packages that are installed on the device, for a
       * specific user.
       *
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user for whom the installed packages are to be listed
       * @return A List of PackageInfo objects, one for each installed package,
       *         containing information about the package. In the unlikely case
       *         there are no installed packages, an empty list is returned. If
       *         flag {@code MATCH_UNINSTALLED_PACKAGES} is set, the package
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       * @hide
       */
      @NonNull
      @TestApi
      @SystemApi
      @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
      public abstract List<PackageInfo> getInstalledPackagesAsUser(@PackageInfoFlags int flags,
              @UserIdInt int userId);
  
      /**
       * Check whether a particular package has been granted a particular
       * permission.
       *
       * @param permissionName The name of the permission you are checking for.
       * @param packageName The name of the package you are checking against.
       *
       * @return If the package has the permission, PERMISSION_GRANTED is
       * returned.  If it does not have the permission, PERMISSION_DENIED
       * is returned.
       *
       * @see #PERMISSION_GRANTED
       * @see #PERMISSION_DENIED
       */
      @CheckResult
      @PermissionResult
      public abstract int checkPermission(@NonNull String permissionName,
              @NonNull String packageName);
  
      /**
       * Checks whether a particular permissions has been revoked for a
       * package by policy. Typically the device owner or the profile owner
       * may apply such a policy. The user cannot grant policy revoked
       * permissions, hence the only way for an app to get such a permission
       * is by a policy change.
       *
       * @param permissionName The name of the permission you are checking for.
       * @param packageName The name of the package you are checking against.
       *
       * @return Whether the permission is restricted by policy.
       */
      @CheckResult
      public abstract boolean isPermissionRevokedByPolicy(@NonNull String permissionName,
              @NonNull String packageName);
  
      /**
       * Gets the package name of the component controlling runtime permissions.
       *
       * @return The package name.
       *
       * @hide
       */
      @NonNull
      @TestApi
      public abstract String getPermissionControllerPackageName();
  
      /**
       * Add a new dynamic permission to the system.  For this to work, your
       * package must have defined a permission tree through the
       * {@link android.R.styleable#AndroidManifestPermissionTree
       * &lt;permission-tree&gt;} tag in its manifest.  A package can only add
       * permissions to trees that were defined by either its own package or
       * another with the same user id; a permission is in a tree if it
       * matches the name of the permission tree + ".": for example,
       * "com.foo.bar" is a member of the permission tree "com.foo".
       *
       * <p>It is good to make your permission tree name descriptive, because you
       * are taking possession of that entire set of permission names.  Thus, it
       * must be under a domain you control, with a suffix that will not match
       * any normal permissions that may be declared in any applications that
       * are part of that domain.
       *
       * <p>New permissions must be added before
       * any .apks are installed that use those permissions.  Permissions you
       * add through this method are remembered across reboots of the device.
       * If the given permission already exists, the info you supply here
       * will be used to update it.
       *
       * @param info Description of the permission to be added.
       *
       * @return Returns true if a new permission was created, false if an
       * existing one was updated.
       *
       * @throws SecurityException if you are not allowed to add the
       * given permission name.
       *
       * @see #removePermission(String)
       */
      public abstract boolean addPermission(@NonNull PermissionInfo info);
  
      /**
       * Like {@link #addPermission(PermissionInfo)} but asynchronously
       * persists the package manager state after returning from the call,
       * allowing it to return quicker and batch a series of adds at the
       * expense of no guarantee the added permission will be retained if
       * the device is rebooted before it is written.
       */
      public abstract boolean addPermissionAsync(@NonNull PermissionInfo info);
  
      /**
       * Removes a permission that was previously added with
       * {@link #addPermission(PermissionInfo)}.  The same ownership rules apply
       * -- you are only allowed to remove permissions that you are allowed
       * to add.
       *
       * @param permissionName The name of the permission to remove.
       *
       * @throws SecurityException if you are not allowed to remove the
       * given permission name.
       *
       * @see #addPermission(PermissionInfo)
       */
      public abstract void removePermission(@NonNull String permissionName);
  
      /**
       * Permission flags set when granting or revoking a permission.
       *
       * @hide
       */
      @SystemApi
      @IntDef(prefix = { "FLAG_PERMISSION_" }, value = {
              FLAG_PERMISSION_USER_SET,
              FLAG_PERMISSION_USER_FIXED,
              FLAG_PERMISSION_POLICY_FIXED,
              FLAG_PERMISSION_REVOKE_ON_UPGRADE,
              FLAG_PERMISSION_SYSTEM_FIXED,
              FLAG_PERMISSION_GRANTED_BY_DEFAULT,
              FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED,
              FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED,
              /*
              FLAG_PERMISSION_REVOKE_WHEN_REQUESED
              */
              FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT,
              FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT,
              FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT,
              FLAG_PERMISSION_APPLY_RESTRICTION,
              FLAG_PERMISSION_GRANTED_BY_ROLE
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface PermissionFlags {}
  
      /**
       * Grant a runtime permission to an application which the application does not
       * already have. The permission must have been requested by the application.
       * If the application is not allowed to hold the permission, a {@link
       * java.lang.SecurityException} is thrown. If the package or permission is
       * invalid, a {@link java.lang.IllegalArgumentException} is thrown.
       * <p>
       * <strong>Note: </strong>Using this API requires holding
       * android.permission.GRANT_RUNTIME_PERMISSIONS and if the user id is
       * not the current user android.permission.INTERACT_ACROSS_USERS_FULL.
       * </p>
       *
       * @param packageName The package to which to grant the permission.
       * @param permissionName The permission name to grant.
       * @param user The user for which to grant the permission.
       *
       * @see #revokeRuntimePermission(String, String, android.os.UserHandle)
       *
       * @hide
       */
      @TestApi
      @SystemApi
      @RequiresPermission(android.Manifest.permission.GRANT_RUNTIME_PERMISSIONS)
      public abstract void grantRuntimePermission(@NonNull String packageName,
              @NonNull String permissionName, @NonNull UserHandle user);
  
      /**
       * Revoke a runtime permission that was previously granted by {@link
       * #grantRuntimePermission(String, String, android.os.UserHandle)}. The
       * permission must have been requested by and granted to the application.
       * If the application is not allowed to hold the permission, a {@link
       * java.lang.SecurityException} is thrown. If the package or permission is
       * invalid, a {@link java.lang.IllegalArgumentException} is thrown.
       * <p>
       * <strong>Note: </strong>Using this API requires holding
       * android.permission.REVOKE_RUNTIME_PERMISSIONS and if the user id is
       * not the current user android.permission.INTERACT_ACROSS_USERS_FULL.
       * </p>
       *
       * @param packageName The package from which to revoke the permission.
       * @param permissionName The permission name to revoke.
       * @param user The user for which to revoke the permission.
       *
       * @see #grantRuntimePermission(String, String, android.os.UserHandle)
       *
       * @hide
       */
      @TestApi
      @SystemApi
      @RequiresPermission(android.Manifest.permission.REVOKE_RUNTIME_PERMISSIONS)
      public abstract void revokeRuntimePermission(@NonNull String packageName,
              @NonNull String permissionName, @NonNull UserHandle user);
  
      /**
       * Gets the state flags associated with a permission.
       *
       * @param permissionName The permission for which to get the flags.
       * @param packageName The package name for which to get the flags.
       * @param user The user for which to get permission flags.
       * @return The permission flags.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      @RequiresPermission(anyOf = {
              android.Manifest.permission.GRANT_RUNTIME_PERMISSIONS,
              android.Manifest.permission.REVOKE_RUNTIME_PERMISSIONS,
              android.Manifest.permission.GET_RUNTIME_PERMISSIONS
      })
      @PermissionFlags
      public abstract int getPermissionFlags(@NonNull String permissionName,
              @NonNull String packageName, @NonNull UserHandle user);
  
      /**
       * Updates the flags associated with a permission by replacing the flags in
       * the specified mask with the provided flag values.
       *
       * @param permissionName The permission for which to update the flags.
       * @param packageName The package name for which to update the flags.
       * @param flagMask The flags which to replace.
       * @param flagValues The flags with which to replace.
       * @param user The user for which to update the permission flags.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      @RequiresPermission(anyOf = {
              android.Manifest.permission.GRANT_RUNTIME_PERMISSIONS,
              android.Manifest.permission.REVOKE_RUNTIME_PERMISSIONS
      })
      public abstract void updatePermissionFlags(@NonNull String permissionName,
              @NonNull String packageName, @PermissionFlags int flagMask,
              @PermissionFlags int flagValues, @NonNull UserHandle user);
  
      /**
       * Gets the restricted permissions that have been whitelisted and the app
       * is allowed to have them granted in their full form.
       *
       * <p> Permissions can be hard restricted which means that the app cannot hold
       * them or soft restricted where the app can hold the permission but in a weaker
       * form. Whether a permission is {@link PermissionInfo#FLAG_HARD_RESTRICTED hard
       * restricted} or {@link PermissionInfo#FLAG_SOFT_RESTRICTED soft restricted}
       * depends on the permission declaration. Whitelisting a hard restricted permission
       * allows for the to hold that permission and whitelisting a soft restricted
       * permission allows the app to hold the permission in its full, unrestricted form.
       *
       * <p><ol>There are three whitelists:
       *
       * <li>one for cases where the system permission policy whitelists a permission
       * This list corresponds to the{@link #FLAG_PERMISSION_WHITELIST_SYSTEM} flag.
       * Can only be accessed by pre-installed holders of a dedicated permission.
       *
       * <li>one for cases where the system whitelists the permission when upgrading
       * from an OS version in which the permission was not restricted to an OS version
       * in which the permission is restricted. This list corresponds to the {@link
       * #FLAG_PERMISSION_WHITELIST_UPGRADE} flag. Can be accessed by pre-installed
       * holders of a dedicated permission or the installer on record.
       *
       * <li>one for cases where the installer of the package whitelists a permission.
       * This list corresponds to the {@link #FLAG_PERMISSION_WHITELIST_INSTALLER} flag.
       * Can be accessed by pre-installed holders of a dedicated permission or the
       * installer on record.
       *
       * @param packageName The app for which to get whitelisted permissions.
       * @param whitelistFlag The flag to determine which whitelist to query. Only one flag
       * can be passed.s
       * @return The whitelisted permissions that are on any of the whitelists you query for.
       *
       * @see #addWhitelistedRestrictedPermission(String, String, int)
       * @see #removeWhitelistedRestrictedPermission(String, String, int)
       * @see #FLAG_PERMISSION_WHITELIST_SYSTEM
       * @see #FLAG_PERMISSION_WHITELIST_UPGRADE
       * @see #FLAG_PERMISSION_WHITELIST_INSTALLER
       *
       * @throws SecurityException if you try to access a whitelist that you have no access to.
       */
      @RequiresPermission(value = Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS,
              conditional = true)
      public @NonNull Set<String> getWhitelistedRestrictedPermissions(
              @NonNull String packageName, @PermissionWhitelistFlags int whitelistFlag) {
          return Collections.emptySet();
      }
  
      /**
       * Adds a whitelisted restricted permission for an app.
       *
       * <p> Permissions can be hard restricted which means that the app cannot hold
       * them or soft restricted where the app can hold the permission but in a weaker
       * form. Whether a permission is {@link PermissionInfo#FLAG_HARD_RESTRICTED hard
       * restricted} or {@link PermissionInfo#FLAG_SOFT_RESTRICTED soft restricted}
       * depends on the permission declaration. Whitelisting a hard restricted permission
       * allows for the to hold that permission and whitelisting a soft restricted
       * permission allows the app to hold the permission in its full, unrestricted form.
       *
       * <p><ol>There are three whitelists:
       *
       * <li>one for cases where the system permission policy whitelists a permission
       * This list corresponds to the {@link #FLAG_PERMISSION_WHITELIST_SYSTEM} flag.
       * Can only be modified by pre-installed holders of a dedicated permission.
       *
       * <li>one for cases where the system whitelists the permission when upgrading
       * from an OS version in which the permission was not restricted to an OS version
       * in which the permission is restricted. This list corresponds to the {@link
       * #FLAG_PERMISSION_WHITELIST_UPGRADE} flag. Can be modified by pre-installed
       * holders of a dedicated permission. The installer on record can only remove
       * permissions from this whitelist.
       *
       * <li>one for cases where the installer of the package whitelists a permission.
       * This list corresponds to the {@link #FLAG_PERMISSION_WHITELIST_INSTALLER} flag.
       * Can be modified by pre-installed holders of a dedicated permission or the installer
       * on record.
       *
       * <p>You need to specify the whitelists for which to set the whitelisted permissions
       * which will clear the previous whitelisted permissions and replace them with the
       * provided ones.
       *
       * @param packageName The app for which to get whitelisted permissions.
       * @param permission The whitelisted permission to add.
       * @param whitelistFlags The whitelists to which to add. Passing multiple flags
       * updates all specified whitelists.
       * @return Whether the permission was added to the whitelist.
       *
       * @see #getWhitelistedRestrictedPermissions(String, int)
       * @see #removeWhitelistedRestrictedPermission(String, String, int)
       * @see #FLAG_PERMISSION_WHITELIST_SYSTEM
       * @see #FLAG_PERMISSION_WHITELIST_UPGRADE
       * @see #FLAG_PERMISSION_WHITELIST_INSTALLER
       *
       * @throws SecurityException if you try to modify a whitelist that you have no access to.
       */
      @RequiresPermission(value = Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS,
              conditional = true)
      public boolean addWhitelistedRestrictedPermission(@NonNull String packageName,
              @NonNull String permission, @PermissionWhitelistFlags int whitelistFlags) {
          return false;
      }
  
      /**
       * Removes a whitelisted restricted permission for an app.
       *
       * <p> Permissions can be hard restricted which means that the app cannot hold
       * them or soft restricted where the app can hold the permission but in a weaker
       * form. Whether a permission is {@link PermissionInfo#FLAG_HARD_RESTRICTED hard
       * restricted} or {@link PermissionInfo#FLAG_SOFT_RESTRICTED soft restricted}
       * depends on the permission declaration. Whitelisting a hard restricted permission
       * allows for the to hold that permission and whitelisting a soft restricted
       * permission allows the app to hold the permission in its full, unrestricted form.
       *
       * <p><ol>There are three whitelists:
       *
       * <li>one for cases where the system permission policy whitelists a permission
       * This list corresponds to the {@link #FLAG_PERMISSION_WHITELIST_SYSTEM} flag.
       * Can only be modified by pre-installed holders of a dedicated permission.
       *
       * <li>one for cases where the system whitelists the permission when upgrading
       * from an OS version in which the permission was not restricted to an OS version
       * in which the permission is restricted. This list corresponds to the {@link
       * #FLAG_PERMISSION_WHITELIST_UPGRADE} flag. Can be modified by pre-installed
       * holders of a dedicated permission. The installer on record can only remove
       * permissions from this whitelist.
       *
       * <li>one for cases where the installer of the package whitelists a permission.
       * This list corresponds to the {@link #FLAG_PERMISSION_WHITELIST_INSTALLER} flag.
       * Can be modified by pre-installed holders of a dedicated permission or the installer
       * on record.
       *
       * <p>You need to specify the whitelists for which to set the whitelisted permissions
       * which will clear the previous whitelisted permissions and replace them with the
       * provided ones.
       *
       * @param packageName The app for which to get whitelisted permissions.
       * @param permission The whitelisted permission to remove.
       * @param whitelistFlags The whitelists from which to remove. Passing multiple flags
       * updates all specified whitelists.
       * @return Whether the permission was removed from the whitelist.
       *
       * @see #getWhitelistedRestrictedPermissions(String, int)
       * @see #addWhitelistedRestrictedPermission(String, String, int)
       * @see #FLAG_PERMISSION_WHITELIST_SYSTEM
       * @see #FLAG_PERMISSION_WHITELIST_UPGRADE
       * @see #FLAG_PERMISSION_WHITELIST_INSTALLER
       *
       * @throws SecurityException if you try to modify a whitelist that you have no access to.
       */
      @RequiresPermission(value = Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS,
          conditional = true)
      public boolean removeWhitelistedRestrictedPermission(@NonNull String packageName,
          @NonNull String permission, @PermissionWhitelistFlags int whitelistFlags) {
          return false;
      }
  
      /**
       * Gets whether you should show UI with rationale for requesting a permission.
       * You should do this only if you do not have the permission and the context in
       * which the permission is requested does not clearly communicate to the user
       * what would be the benefit from grating this permission.
       *
       * @param permissionName A permission your app wants to request.
       * @return Whether you can show permission rationale UI.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean shouldShowRequestPermissionRationale(@NonNull String permissionName);
  
      /**
       * Returns an {@link android.content.Intent} suitable for passing to
       * {@link android.app.Activity#startActivityForResult(android.content.Intent, int)}
       * which prompts the user to grant permissions to this application.
       *
       * @throws NullPointerException if {@code permissions} is {@code null} or empty.
       *
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public Intent buildRequestPermissionsIntent(@NonNull String[] permissions) {
          if (ArrayUtils.isEmpty(permissions)) {
             throw new IllegalArgumentException("permission cannot be null or empty");
          }
          Intent intent = new Intent(ACTION_REQUEST_PERMISSIONS);
          intent.putExtra(EXTRA_REQUEST_PERMISSIONS_NAMES, permissions);
          intent.setPackage(getPermissionControllerPackageName());
          return intent;
      }
  
      /**
       * Compare the signatures of two packages to determine if the same
       * signature appears in both of them.  If they do contain the same
       * signature, then they are allowed special privileges when working
       * with each other: they can share the same user-id, run instrumentation
       * against each other, etc.
       *
       * @param packageName1 First package name whose signature will be compared.
       * @param packageName2 Second package name whose signature will be compared.
       *
       * @return Returns an integer indicating whether all signatures on the
       * two packages match. The value is >= 0 ({@link #SIGNATURE_MATCH}) if
       * all signatures match or < 0 if there is not a match ({@link
       * #SIGNATURE_NO_MATCH} or {@link #SIGNATURE_UNKNOWN_PACKAGE}).
       *
       * @see #checkSignatures(int, int)
       */
      @CheckResult
      @SignatureResult
      public abstract int checkSignatures(@NonNull String packageName1,
              @NonNull String packageName2);
  
      /**
       * Like {@link #checkSignatures(String, String)}, but takes UIDs of
       * the two packages to be checked.  This can be useful, for example,
       * when doing the check in an IPC, where the UID is the only identity
       * available.  It is functionally identical to determining the package
       * associated with the UIDs and checking their signatures.
       *
       * @param uid1 First UID whose signature will be compared.
       * @param uid2 Second UID whose signature will be compared.
       *
       * @return Returns an integer indicating whether all signatures on the
       * two packages match. The value is >= 0 ({@link #SIGNATURE_MATCH}) if
       * all signatures match or < 0 if there is not a match ({@link
       * #SIGNATURE_NO_MATCH} or {@link #SIGNATURE_UNKNOWN_PACKAGE}).
       *
       * @see #checkSignatures(String, String)
       */
      @CheckResult
      public abstract @SignatureResult int checkSignatures(int uid1, int uid2);
  
      /**
       * Retrieve the names of all packages that are associated with a particular
       * user id.  In most cases, this will be a single package name, the package
       * that has been assigned that user id.  Where there are multiple packages
       * sharing the same user id through the "sharedUserId" mechanism, all
       * packages with that id will be returned.
       *
       * @param uid The user id for which you would like to retrieve the
       * associated packages.
       *
       * @return Returns an array of one or more packages assigned to the user
       * id, or null if there are no known packages with the given id.
       */
      public abstract @Nullable String[] getPackagesForUid(int uid);
  
      /**
       * Retrieve the official name associated with a uid. This name is
       * guaranteed to never change, though it is possible for the underlying
       * uid to be changed.  That is, if you are storing information about
       * uids in persistent storage, you should use the string returned
       * by this function instead of the raw uid.
       *
       * @param uid The uid for which you would like to retrieve a name.
       * @return Returns a unique name for the given uid, or null if the
       * uid is not currently assigned.
       */
      public abstract @Nullable String getNameForUid(int uid);
  
      /**
       * Retrieves the official names associated with each given uid.
       * @see #getNameForUid(int)
       *
       * @hide
       */
      @TestApi
      public abstract @Nullable String[] getNamesForUids(int[] uids);
  
      /**
       * Return the user id associated with a shared user name. Multiple
       * applications can specify a shared user name in their manifest and thus
       * end up using a common uid. This might be used for new applications
       * that use an existing shared user name and need to know the uid of the
       * shared user.
       *
       * @param sharedUserName The shared user name whose uid is to be retrieved.
       * @return Returns the UID associated with the shared user.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract int getUidForSharedUser(@NonNull String sharedUserName)
              throws NameNotFoundException;
  
      /**
       * Return a List of all application packages that are installed for the
       * current user. If flag GET_UNINSTALLED_PACKAGES has been set, a list of all
       * applications including those deleted with {@code DONT_DELETE_DATA}
       * (partially installed apps with data directory) will be returned.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return A List of ApplicationInfo objects, one for each installed
       *         application. In the unlikely case there are no installed
       *         packages, an empty list is returned. If flag
       *         {@code MATCH_UNINSTALLED_PACKAGES} is set, the application
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       */
      @NonNull
      public abstract List<ApplicationInfo> getInstalledApplications(@ApplicationInfoFlags int flags);
  
      /**
       * Return a List of all application packages that are installed on the
       * device, for a specific user. If flag GET_UNINSTALLED_PACKAGES has been
       * set, a list of all applications including those deleted with
       * {@code DONT_DELETE_DATA} (partially installed apps with data directory)
       * will be returned.
       *
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user for whom the installed applications are to be
       *            listed
       * @return A List of ApplicationInfo objects, one for each installed
       *         application. In the unlikely case there are no installed
       *         packages, an empty list is returned. If flag
       *         {@code MATCH_UNINSTALLED_PACKAGES} is set, the application
       *         information is retrieved from the list of uninstalled
       *         applications (which includes installed applications as well as
       *         applications with data directory i.e. applications which had been
       *         deleted with {@code DONT_DELETE_DATA} flag set).
       * @hide
       */
      @NonNull
      @TestApi
      public abstract List<ApplicationInfo> getInstalledApplicationsAsUser(
              @ApplicationInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Gets the instant applications the user recently used.
       *
       * @return The instant app list.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.ACCESS_INSTANT_APPS)
      public abstract @NonNull List<InstantAppInfo> getInstantApps();
  
      /**
       * Gets the icon for an instant application.
       *
       * @param packageName The app package name.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.ACCESS_INSTANT_APPS)
      public abstract @Nullable Drawable getInstantAppIcon(String packageName);
  
      /**
       * Gets whether this application is an instant app.
       *
       * @return Whether caller is an instant app.
       *
       * @see #isInstantApp(String)
       * @see #updateInstantAppCookie(byte[])
       * @see #getInstantAppCookie()
       * @see #getInstantAppCookieMaxBytes()
       */
      public abstract boolean isInstantApp();
  
      /**
       * Gets whether the given package is an instant app.
       *
       * @param packageName The package to check
       * @return Whether the given package is an instant app.
       *
       * @see #isInstantApp()
       * @see #updateInstantAppCookie(byte[])
       * @see #getInstantAppCookie()
       * @see #getInstantAppCookieMaxBytes()
       * @see #clearInstantAppCookie()
       */
      public abstract boolean isInstantApp(@NonNull String packageName);
  
      /**
       * Gets the maximum size in bytes of the cookie data an instant app
       * can store on the device.
       *
       * @return The max cookie size in bytes.
       *
       * @see #isInstantApp()
       * @see #isInstantApp(String)
       * @see #updateInstantAppCookie(byte[])
       * @see #getInstantAppCookie()
       * @see #clearInstantAppCookie()
       */
      public abstract int getInstantAppCookieMaxBytes();
  
      /**
       * deprecated
       * @hide
       */
      public abstract int getInstantAppCookieMaxSize();
  
      /**
       * Gets the instant application cookie for this app. Non
       * instant apps and apps that were instant but were upgraded
       * to normal apps can still access this API. For instant apps
       * this cookie is cached for some time after uninstall while for
       * normal apps the cookie is deleted after the app is uninstalled.
       * The cookie is always present while the app is installed.
       *
       * @return The cookie.
       *
       * @see #isInstantApp()
       * @see #isInstantApp(String)
       * @see #updateInstantAppCookie(byte[])
       * @see #getInstantAppCookieMaxBytes()
       * @see #clearInstantAppCookie()
       */
      public abstract @NonNull byte[] getInstantAppCookie();
  
      /**
       * Clears the instant application cookie for the calling app.
       *
       * @see #isInstantApp()
       * @see #isInstantApp(String)
       * @see #getInstantAppCookieMaxBytes()
       * @see #getInstantAppCookie()
       * @see #clearInstantAppCookie()
       */
      public abstract void clearInstantAppCookie();
  
      /**
       * Updates the instant application cookie for the calling app. Non
       * instant apps and apps that were instant but were upgraded
       * to normal apps can still access this API. For instant apps
       * this cookie is cached for some time after uninstall while for
       * normal apps the cookie is deleted after the app is uninstalled.
       * The cookie is always present while the app is installed. The
       * cookie size is limited by {@link #getInstantAppCookieMaxBytes()}.
       * Passing <code>null</code> or an empty array clears the cookie.
       * </p>
       *
       * @param cookie The cookie data.
       *
       * @see #isInstantApp()
       * @see #isInstantApp(String)
       * @see #getInstantAppCookieMaxBytes()
       * @see #getInstantAppCookie()
       * @see #clearInstantAppCookie()
       *
       * @throws IllegalArgumentException if the array exceeds max cookie size.
       */
      public abstract void updateInstantAppCookie(@Nullable byte[] cookie);
  
      /**
       * @removed
       */
      public abstract boolean setInstantAppCookie(@Nullable byte[] cookie);
  
      /**
       * Get a list of shared libraries that are available on the
       * system.
       *
       * @return An array of shared library names that are
       * available on the system, or null if none are installed.
       *
       */
      @Nullable
      public abstract String[] getSystemSharedLibraryNames();
  
      /**
       * Get a list of shared libraries on the device.
       *
       * @param flags To filter the libraries to return.
       * @return The shared library list.
       *
       * @see #MATCH_UNINSTALLED_PACKAGES
       */
      public abstract @NonNull List<SharedLibraryInfo> getSharedLibraries(
              @InstallFlags int flags);
  
      /**
       * Get a list of shared libraries on the device.
       *
       * @param flags To filter the libraries to return.
       * @param userId The user to query for.
       * @return The shared library list.
       *
       * @see #MATCH_FACTORY_ONLY
       * @see #MATCH_KNOWN_PACKAGES
       * @see #MATCH_ANY_USER
       * @see #MATCH_UNINSTALLED_PACKAGES
       *
       * @hide
       */
      public abstract @NonNull List<SharedLibraryInfo> getSharedLibrariesAsUser(
              @InstallFlags int flags, @UserIdInt int userId);
  
      /**
       * Get the list of shared libraries declared by a package.
       *
       * @param packageName the package name to query
       * @param flags the flags to filter packages
       * @return the shared library list
       *
       * @hide
       */
      @NonNull
      @RequiresPermission(Manifest.permission.ACCESS_SHARED_LIBRARIES)
      @SystemApi
      public List<SharedLibraryInfo> getDeclaredSharedLibraries(@NonNull String packageName,
              @InstallFlags int flags) {
          throw new UnsupportedOperationException(
                  "getDeclaredSharedLibraries() not implemented in subclass");
      }
  
      /**
       * Get the name of the package hosting the services shared library.
       *
       * @return The library host package.
       *
       * @hide
       */
      @TestApi
      public abstract @NonNull String getServicesSystemSharedLibraryPackageName();
  
      /**
       * Get the name of the package hosting the shared components shared library.
       *
       * @return The library host package.
       *
       * @hide
       */
      @TestApi
      public abstract @NonNull String getSharedSystemSharedLibraryPackageName();
  
      /**
       * Returns the names of the packages that have been changed
       * [eg. added, removed or updated] since the given sequence
       * number.
       * <p>If no packages have been changed, returns <code>null</code>.
       * <p>The sequence number starts at <code>0</code> and is
       * reset every boot.
       * @param sequenceNumber The first sequence number for which to retrieve package changes.
       * @see android.provider.Settings.Global#BOOT_COUNT
       */
      public abstract @Nullable ChangedPackages getChangedPackages(
              @IntRange(from=0) int sequenceNumber);
  
      /**
       * Get a list of features that are available on the
       * system.
       *
       * @return An array of FeatureInfo classes describing the features
       * that are available on the system, or null if there are none(!!).
       */
      @NonNull
      public abstract FeatureInfo[] getSystemAvailableFeatures();
  
      /**
       * Check whether the given feature name is one of the available features as
       * returned by {@link #getSystemAvailableFeatures()}. This tests for the
       * presence of <em>any</em> version of the given feature name; use
       * {@link #hasSystemFeature(String, int)} to check for a minimum version.
       *
       * @return Returns true if the devices supports the feature, else false.
       */
      public abstract boolean hasSystemFeature(@NonNull String featureName);
  
      /**
       * Check whether the given feature name and version is one of the available
       * features as returned by {@link #getSystemAvailableFeatures()}. Since
       * features are defined to always be backwards compatible, this returns true
       * if the available feature version is greater than or equal to the
       * requested version.
       *
       * @return Returns true if the devices supports the feature, else false.
       */
      public abstract boolean hasSystemFeature(@NonNull String featureName, int version);
  
      /**
       * Determine the best action to perform for a given Intent. This is how
       * {@link Intent#resolveActivity} finds an activity if a class has not been
       * explicitly specified.
       * <p>
       * <em>Note:</em> if using an implicit Intent (without an explicit
       * ComponentName specified), be sure to consider whether to set the
       * {@link #MATCH_DEFAULT_ONLY} only flag. You need to do so to resolve the
       * activity in the same way that
       * {@link android.content.Context#startActivity(Intent)} and
       * {@link android.content.Intent#resolveActivity(PackageManager)
       * Intent.resolveActivity(PackageManager)} do.
       * </p>
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}.
       * @return Returns a ResolveInfo object containing the final activity intent
       *         that was determined to be the best action. Returns null if no
       *         matching activity was found. If multiple matching activities are
       *         found and there is no default set, returns a ResolveInfo object
       *         containing something else, such as the activity resolver.
       */
      @Nullable
      public abstract ResolveInfo resolveActivity(@NonNull Intent intent,
              @ResolveInfoFlags int flags);
  
      /**
       * Determine the best action to perform for a given Intent for a given user.
       * This is how {@link Intent#resolveActivity} finds an activity if a class
       * has not been explicitly specified.
       * <p>
       * <em>Note:</em> if using an implicit Intent (without an explicit
       * ComponentName specified), be sure to consider whether to set the
       * {@link #MATCH_DEFAULT_ONLY} only flag. You need to do so to resolve the
       * activity in the same way that
       * {@link android.content.Context#startActivity(Intent)} and
       * {@link android.content.Intent#resolveActivity(PackageManager)
       * Intent.resolveActivity(PackageManager)} do.
       * </p>
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}.
       * @param userId The user id.
       * @return Returns a ResolveInfo object containing the final activity intent
       *         that was determined to be the best action. Returns null if no
       *         matching activity was found. If multiple matching activities are
       *         found and there is no default set, returns a ResolveInfo object
       *         containing something else, such as the activity resolver.
       * @hide
       */
      @Nullable
      @UnsupportedAppUsage
      public abstract ResolveInfo resolveActivityAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve all activities that can be performed for the given intent.
       *
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}. Or, set
       *            {@link #MATCH_ALL} to prevent any filtering of the results.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching activity, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveActivity}. If there are no matching activities, an
       *         empty list is returned.
       */
      @NonNull
      public abstract List<ResolveInfo> queryIntentActivities(@NonNull Intent intent,
              @ResolveInfoFlags int flags);
  
      /**
       * Retrieve all activities that can be performed for the given intent, for a
       * specific user.
       *
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}. Or, set
       *            {@link #MATCH_ALL} to prevent any filtering of the results.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching activity, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveActivity}. If there are no matching activities, an
       *         empty list is returned.
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract List<ResolveInfo> queryIntentActivitiesAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve all activities that can be performed for the given intent, for a
       * specific user.
       *
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}. Or, set
       *            {@link #MATCH_ALL} to prevent any filtering of the results.
       * @param user The user being queried.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching activity, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveActivity}. If there are no matching activities, an
       *         empty list is returned.
       * @hide
       */
      @NonNull
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      @SystemApi
      public List<ResolveInfo> queryIntentActivitiesAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @NonNull UserHandle user) {
          return queryIntentActivitiesAsUser(intent, flags, user.getIdentifier());
      }
  
      /**
       * Retrieve a set of activities that should be presented to the user as
       * similar options. This is like {@link #queryIntentActivities}, except it
       * also allows you to supply a list of more explicit Intents that you would
       * like to resolve to particular options, and takes care of returning the
       * final ResolveInfo list in a reasonable order, with no duplicates, based
       * on those inputs.
       *
       * @param caller The class name of the activity that is making the request.
       *            This activity will never appear in the output list. Can be
       *            null.
       * @param specifics An array of Intents that should be resolved to the first
       *            specific results. Can be null.
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned. The
       *            most important is {@link #MATCH_DEFAULT_ONLY}, to limit the
       *            resolution to only those activities that support the
       *            {@link android.content.Intent#CATEGORY_DEFAULT}.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching activity. The list is ordered first by all of the
       *         intents resolved in <var>specifics</var> and then any additional
       *         activities that can handle <var>intent</var> but did not get
       *         included by one of the <var>specifics</var> intents. If there are
       *         no matching activities, an empty list is returned.
       */
      @NonNull
      public abstract List<ResolveInfo> queryIntentActivityOptions(@Nullable ComponentName caller,
              @Nullable Intent[] specifics, @NonNull Intent intent, @ResolveInfoFlags int flags);
  
      /**
       * Retrieve all receivers that can handle a broadcast of the given intent.
       *
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching receiver, ordered from best to worst. If there are
       *         no matching receivers, an empty list or null is returned.
       */
      @NonNull
      public abstract List<ResolveInfo> queryBroadcastReceivers(@NonNull Intent intent,
              @ResolveInfoFlags int flags);
  
      /**
       * Retrieve all receivers that can handle a broadcast of the given intent,
       * for a specific user.
       *
       * @param intent The desired intent as per resolveActivity().
       * @param flags Additional option flags to modify the data returned.
       * @param userHandle UserHandle of the user being queried.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching receiver, ordered from best to worst. If there are
       *         no matching receivers, an empty list or null is returned.
       * @hide
       */
      @NonNull
      @SystemApi
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      public List<ResolveInfo> queryBroadcastReceiversAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, UserHandle userHandle) {
          return queryBroadcastReceiversAsUser(intent, flags, userHandle.getIdentifier());
      }
  
      /**
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract List<ResolveInfo> queryBroadcastReceiversAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId);
  
  
      /** @deprecated @hide */
      @NonNull
      @Deprecated
      @UnsupportedAppUsage
      public List<ResolveInfo> queryBroadcastReceivers(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId) {
          final String msg = "Shame on you for calling the hidden API "
                  + "queryBroadcastReceivers(). Shame!";
          if (VMRuntime.getRuntime().getTargetSdkVersion() >= Build.VERSION_CODES.O) {
              throw new UnsupportedOperationException(msg);
          } else {
              Log.d(TAG, msg);
              return queryBroadcastReceiversAsUser(intent, flags, userId);
          }
      }
  
      /**
       * Determine the best service to handle for a given Intent.
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a ResolveInfo object containing the final service intent
       *         that was determined to be the best action. Returns null if no
       *         matching service was found.
       */
      @Nullable
      public abstract ResolveInfo resolveService(@NonNull Intent intent, @ResolveInfoFlags int flags);
  
      /**
       * @hide
       */
      @Nullable
      public abstract ResolveInfo resolveServiceAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve all services that can match the given intent.
       *
       * @param intent The desired intent as per resolveService().
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching service, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveService}. If there are no matching services, an
       *         empty list or null is returned.
       */
      @NonNull
      public abstract List<ResolveInfo> queryIntentServices(@NonNull Intent intent,
              @ResolveInfoFlags int flags);
  
      /**
       * Retrieve all services that can match the given intent for a given user.
       *
       * @param intent The desired intent as per resolveService().
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user id.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching service, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveService}. If there are no matching services, an
       *         empty list or null is returned.
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract List<ResolveInfo> queryIntentServicesAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve all services that can match the given intent for a given user.
       *
       * @param intent The desired intent as per resolveService().
       * @param flags Additional option flags to modify the data returned.
       * @param user The user being queried.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching service, ordered from best to worst. In other
       *         words, the first item is what would be returned by
       *         {@link #resolveService}. If there are no matching services, an
       *         empty list or null is returned.
       * @hide
       */
      @NonNull
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      @SystemApi
      public List<ResolveInfo> queryIntentServicesAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @NonNull UserHandle user) {
          return queryIntentServicesAsUser(intent, flags, user.getIdentifier());
      }
  
      /**
       * Retrieve all providers that can match the given intent.
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user id.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching provider, ordered from best to worst. If there are
       *         no matching services, an empty list or null is returned.
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract List<ResolveInfo> queryIntentContentProvidersAsUser(
              @NonNull Intent intent, @ResolveInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve all providers that can match the given intent.
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned.
       * @param user The user being queried.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching provider, ordered from best to worst. If there are
       *         no matching services, an empty list or null is returned.
       * @hide
       */
      @NonNull
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS)
      @SystemApi
      public List<ResolveInfo> queryIntentContentProvidersAsUser(@NonNull Intent intent,
              @ResolveInfoFlags int flags, @NonNull UserHandle user) {
          return queryIntentContentProvidersAsUser(intent, flags, user.getIdentifier());
      }
  
      /**
       * Retrieve all providers that can match the given intent.
       *
       * @param intent An intent containing all of the desired specification
       *            (action, data, type, category, and/or component).
       * @param flags Additional option flags to modify the data returned.
       * @return Returns a List of ResolveInfo objects containing one entry for
       *         each matching provider, ordered from best to worst. If there are
       *         no matching services, an empty list or null is returned.
       */
      @NonNull
      public abstract List<ResolveInfo> queryIntentContentProviders(@NonNull Intent intent,
              @ResolveInfoFlags int flags);
  
      /**
       * Find a single content provider by its authority.
       * <p>
       * Example:<p>
       * <pre>
       * Uri uri = Uri.parse("content://com.example.app.provider/table1");
       * ProviderInfo info = packageManager.resolveContentProvider(uri.getAuthority(), flags);
       * </pre>
       *
       * @param authority The authority of the provider to find.
       * @param flags Additional option flags to modify the data returned.
       * @return A {@link ProviderInfo} object containing information about the
       *         provider. If a provider was not found, returns null.
       */
      @Nullable
      public abstract ProviderInfo resolveContentProvider(@NonNull String authority,
              @ComponentInfoFlags int flags);
  
      /**
       * Find a single content provider by its base path name.
       *
       * @param providerName The name of the provider to find.
       * @param flags Additional option flags to modify the data returned.
       * @param userId The user id.
       * @return A {@link ProviderInfo} object containing information about the
       *         provider. If a provider was not found, returns null.
       * @hide
       */
      @Nullable
      @UnsupportedAppUsage
      public abstract ProviderInfo resolveContentProviderAsUser(@NonNull String providerName,
              @ComponentInfoFlags int flags, @UserIdInt int userId);
  
      /**
       * Retrieve content provider information.
       * <p>
       * <em>Note: unlike most other methods, an empty result set is indicated
       * by a null return instead of an empty list.</em>
       *
       * @param processName If non-null, limits the returned providers to only
       *            those that are hosted by the given process. If null, all
       *            content providers are returned.
       * @param uid If <var>processName</var> is non-null, this is the required
       *            uid owning the requested content providers.
       * @param flags Additional option flags to modify the data returned.
       * @return A list of {@link ProviderInfo} objects containing one entry for
       *         each provider either matching <var>processName</var> or, if
       *         <var>processName</var> is null, all known content providers.
       *         <em>If there are no matching providers, null is returned.</em>
       */
      @NonNull
      public abstract List<ProviderInfo> queryContentProviders(
              @Nullable String processName, int uid, @ComponentInfoFlags int flags);
  
      /**
       * Same as {@link #queryContentProviders}, except when {@code metaDataKey} is not null,
       * it only returns providers which have metadata with the {@code metaDataKey} key.
       *
       * <p>DO NOT USE the {@code metaDataKey} parameter, unless you're the contacts provider.
       * You really shouldn't need it.  Other apps should use {@link #queryIntentContentProviders}
       * instead.
       *
       * <p>The {@code metaDataKey} parameter was added to allow the contacts provider to quickly
       * scan the GAL providers on the device.  Unfortunately the discovery protocol used metadata
       * to mark GAL providers, rather than intent filters, so we can't use
       * {@link #queryIntentContentProviders} for that.
       *
       * @hide
       */
      @NonNull
      public List<ProviderInfo> queryContentProviders(@Nullable String processName,
              int uid, @ComponentInfoFlags int flags, String metaDataKey) {
          // Provide the default implementation for mocks.
          return queryContentProviders(processName, uid, flags);
      }
  
      /**
       * Retrieve all of the information we know about a particular
       * instrumentation class.
       *
       * @param className The full name (i.e.
       *            com.google.apps.contacts.InstrumentList) of an Instrumentation
       *            class.
       * @param flags Additional option flags to modify the data returned.
       * @return An {@link InstrumentationInfo} object containing information
       *         about the instrumentation.
       * @throws NameNotFoundException if a package with the given name cannot be
       *             found on the system.
       */
      @NonNull
      public abstract InstrumentationInfo getInstrumentationInfo(@NonNull ComponentName className,
              @InstrumentationInfoFlags int flags) throws NameNotFoundException;
  
      /**
       * Retrieve information about available instrumentation code. May be used to
       * retrieve either all instrumentation code, or only the code targeting a
       * particular package.
       *
       * @param targetPackage If null, all instrumentation is returned; only the
       *            instrumentation targeting this package name is returned.
       * @param flags Additional option flags to modify the data returned.
       * @return A list of {@link InstrumentationInfo} objects containing one
       *         entry for each matching instrumentation. If there are no
       *         instrumentation available, returns an empty list.
       */
      @NonNull
      public abstract List<InstrumentationInfo> queryInstrumentation(@NonNull String targetPackage,
              @InstrumentationInfoFlags int flags);
  
      /**
       * Retrieve an image from a package.  This is a low-level API used by
       * the various package manager info structures (such as
       * {@link ComponentInfo} to implement retrieval of their associated
       * icon.
       *
       * @param packageName The name of the package that this icon is coming from.
       * Cannot be null.
       * @param resid The resource identifier of the desired image.  Cannot be 0.
       * @param appInfo Overall information about <var>packageName</var>.  This
       * may be null, in which case the application information will be retrieved
       * for you if needed; if you already have this information around, it can
       * be much more efficient to supply it here.
       *
       * @return Returns a Drawable holding the requested image.  Returns null if
       * an image could not be found for any reason.
       */
      @Nullable
      public abstract Drawable getDrawable(@NonNull String packageName, @DrawableRes int resid,
              @Nullable ApplicationInfo appInfo);
  
      /**
       * Retrieve the icon associated with an activity.  Given the full name of
       * an activity, retrieves the information about it and calls
       * {@link ComponentInfo#loadIcon ComponentInfo.loadIcon()} to return its icon.
       * If the activity cannot be found, NameNotFoundException is thrown.
       *
       * @param activityName Name of the activity whose icon is to be retrieved.
       *
       * @return Returns the image of the icon, or the default activity icon if
       * it could not be found.  Does not return null.
       * @throws NameNotFoundException Thrown if the resources for the given
       * activity could not be loaded.
       *
       * @see #getActivityIcon(Intent)
       */
      @NonNull
      public abstract Drawable getActivityIcon(@NonNull ComponentName activityName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the icon associated with an Intent.  If intent.getClassName() is
       * set, this simply returns the result of
       * getActivityIcon(intent.getClassName()).  Otherwise it resolves the intent's
       * component and returns the icon associated with the resolved component.
       * If intent.getClassName() cannot be found or the Intent cannot be resolved
       * to a component, NameNotFoundException is thrown.
       *
       * @param intent The intent for which you would like to retrieve an icon.
       *
       * @return Returns the image of the icon, or the default activity icon if
       * it could not be found.  Does not return null.
       * @throws NameNotFoundException Thrown if the resources for application
       * matching the given intent could not be loaded.
       *
       * @see #getActivityIcon(ComponentName)
       */
      @NonNull
      public abstract Drawable getActivityIcon(@NonNull Intent intent)
              throws NameNotFoundException;
  
      /**
       * Retrieve the banner associated with an activity. Given the full name of
       * an activity, retrieves the information about it and calls
       * {@link ComponentInfo#loadIcon ComponentInfo.loadIcon()} to return its
       * banner. If the activity cannot be found, NameNotFoundException is thrown.
       *
       * @param activityName Name of the activity whose banner is to be retrieved.
       * @return Returns the image of the banner, or null if the activity has no
       *         banner specified.
       * @throws NameNotFoundException Thrown if the resources for the given
       *             activity could not be loaded.
       * @see #getActivityBanner(Intent)
       */
      @Nullable
      public abstract Drawable getActivityBanner(@NonNull ComponentName activityName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the banner associated with an Intent. If intent.getClassName()
       * is set, this simply returns the result of
       * getActivityBanner(intent.getClassName()). Otherwise it resolves the
       * intent's component and returns the banner associated with the resolved
       * component. If intent.getClassName() cannot be found or the Intent cannot
       * be resolved to a component, NameNotFoundException is thrown.
       *
       * @param intent The intent for which you would like to retrieve a banner.
       * @return Returns the image of the banner, or null if the activity has no
       *         banner specified.
       * @throws NameNotFoundException Thrown if the resources for application
       *             matching the given intent could not be loaded.
       * @see #getActivityBanner(ComponentName)
       */
      @Nullable
      public abstract Drawable getActivityBanner(@NonNull Intent intent)
              throws NameNotFoundException;
  
      /**
       * Return the generic icon for an activity that is used when no specific
       * icon is defined.
       *
       * @return Drawable Image of the icon.
       */
      @NonNull
      public abstract Drawable getDefaultActivityIcon();
  
      /**
       * Retrieve the icon associated with an application.  If it has not defined
       * an icon, the default app icon is returned.  Does not return null.
       *
       * @param info Information about application being queried.
       *
       * @return Returns the image of the icon, or the default application icon
       * if it could not be found.
       *
       * @see #getApplicationIcon(String)
       */
      @NonNull
      public abstract Drawable getApplicationIcon(@NonNull ApplicationInfo info);
  
      /**
       * Retrieve the icon associated with an application.  Given the name of the
       * application's package, retrieves the information about it and calls
       * getApplicationIcon() to return its icon. If the application cannot be
       * found, NameNotFoundException is thrown.
       *
       * @param packageName Name of the package whose application icon is to be
       *                    retrieved.
       *
       * @return Returns the image of the icon, or the default application icon
       * if it could not be found.  Does not return null.
       * @throws NameNotFoundException Thrown if the resources for the given
       * application could not be loaded.
       *
       * @see #getApplicationIcon(ApplicationInfo)
       */
      @NonNull
      public abstract Drawable getApplicationIcon(@NonNull String packageName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the banner associated with an application.
       *
       * @param info Information about application being queried.
       * @return Returns the image of the banner or null if the application has no
       *         banner specified.
       * @see #getApplicationBanner(String)
       */
      @Nullable
      public abstract Drawable getApplicationBanner(@NonNull ApplicationInfo info);
  
      /**
       * Retrieve the banner associated with an application. Given the name of the
       * application's package, retrieves the information about it and calls
       * getApplicationIcon() to return its banner. If the application cannot be
       * found, NameNotFoundException is thrown.
       *
       * @param packageName Name of the package whose application banner is to be
       *            retrieved.
       * @return Returns the image of the banner or null if the application has no
       *         banner specified.
       * @throws NameNotFoundException Thrown if the resources for the given
       *             application could not be loaded.
       * @see #getApplicationBanner(ApplicationInfo)
       */
      @Nullable
      public abstract Drawable getApplicationBanner(@NonNull String packageName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the logo associated with an activity. Given the full name of an
       * activity, retrieves the information about it and calls
       * {@link ComponentInfo#loadLogo ComponentInfo.loadLogo()} to return its
       * logo. If the activity cannot be found, NameNotFoundException is thrown.
       *
       * @param activityName Name of the activity whose logo is to be retrieved.
       * @return Returns the image of the logo or null if the activity has no logo
       *         specified.
       * @throws NameNotFoundException Thrown if the resources for the given
       *             activity could not be loaded.
       * @see #getActivityLogo(Intent)
       */
      @Nullable
      public abstract Drawable getActivityLogo(@NonNull ComponentName activityName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the logo associated with an Intent.  If intent.getClassName() is
       * set, this simply returns the result of
       * getActivityLogo(intent.getClassName()).  Otherwise it resolves the intent's
       * component and returns the logo associated with the resolved component.
       * If intent.getClassName() cannot be found or the Intent cannot be resolved
       * to a component, NameNotFoundException is thrown.
       *
       * @param intent The intent for which you would like to retrieve a logo.
       *
       * @return Returns the image of the logo, or null if the activity has no
       * logo specified.
       *
       * @throws NameNotFoundException Thrown if the resources for application
       * matching the given intent could not be loaded.
       *
       * @see #getActivityLogo(ComponentName)
       */
      @Nullable
      public abstract Drawable getActivityLogo(@NonNull Intent intent)
              throws NameNotFoundException;
  
      /**
       * Retrieve the logo associated with an application.  If it has not specified
       * a logo, this method returns null.
       *
       * @param info Information about application being queried.
       *
       * @return Returns the image of the logo, or null if no logo is specified
       * by the application.
       *
       * @see #getApplicationLogo(String)
       */
      @Nullable
      public abstract Drawable getApplicationLogo(@NonNull ApplicationInfo info);
  
      /**
       * Retrieve the logo associated with an application.  Given the name of the
       * application's package, retrieves the information about it and calls
       * getApplicationLogo() to return its logo. If the application cannot be
       * found, NameNotFoundException is thrown.
       *
       * @param packageName Name of the package whose application logo is to be
       *                    retrieved.
       *
       * @return Returns the image of the logo, or null if no application logo
       * has been specified.
       *
       * @throws NameNotFoundException Thrown if the resources for the given
       * application could not be loaded.
       *
       * @see #getApplicationLogo(ApplicationInfo)
       */
      @Nullable
      public abstract Drawable getApplicationLogo(@NonNull String packageName)
              throws NameNotFoundException;
  
      /**
       * If the target user is a managed profile, then this returns a badged copy of the given icon
       * to be able to distinguish it from the original icon. For badging an arbitrary drawable use
       * {@link #getUserBadgedDrawableForDensity(
       * android.graphics.drawable.Drawable, UserHandle, android.graphics.Rect, int)}.
       * <p>
       * If the original drawable is a BitmapDrawable and the backing bitmap is
       * mutable as per {@link android.graphics.Bitmap#isMutable()}, the badging
       * is performed in place and the original drawable is returned.
       * </p>
       *
       * @param drawable The drawable to badge.
       * @param user The target user.
       * @return A drawable that combines the original icon and a badge as
       *         determined by the system.
       */
      @NonNull
      public abstract Drawable getUserBadgedIcon(@NonNull Drawable drawable,
              @NonNull UserHandle user);
  
      /**
       * If the target user is a managed profile of the calling user or the caller
       * is itself a managed profile, then this returns a badged copy of the given
       * drawable allowing the user to distinguish it from the original drawable.
       * The caller can specify the location in the bounds of the drawable to be
       * badged where the badge should be applied as well as the density of the
       * badge to be used.
       * <p>
       * If the original drawable is a BitmapDrawable and the backing bitmap is
       * mutable as per {@link android.graphics.Bitmap#isMutable()}, the badging
       * is performed in place and the original drawable is returned.
       * </p>
       *
       * @param drawable The drawable to badge.
       * @param user The target user.
       * @param badgeLocation Where in the bounds of the badged drawable to place
       *         the badge. If it's {@code null}, the badge is applied on top of the entire
       *         drawable being badged.
       * @param badgeDensity The optional desired density for the badge as per
       *         {@link android.util.DisplayMetrics#densityDpi}. If it's not positive,
       *         the density of the display is used.
       * @return A drawable that combines the original drawable and a badge as
       *         determined by the system.
       */
      @NonNull
      public abstract Drawable getUserBadgedDrawableForDensity(@NonNull Drawable drawable,
              @NonNull UserHandle user, @Nullable Rect badgeLocation, int badgeDensity);
  
      /**
       * If the target user is a managed profile of the calling user or the caller
       * is itself a managed profile, then this returns a drawable to use as a small
       * icon to include in a view to distinguish it from the original icon.
       *
       * @param user The target user.
       * @param density The optional desired density for the badge as per
       *         {@link android.util.DisplayMetrics#densityDpi}. If not provided
       *         the density of the current display is used.
       * @return the drawable or null if no drawable is required.
       * @hide
       */
      @Nullable
      @UnsupportedAppUsage
      public abstract Drawable getUserBadgeForDensity(@NonNull UserHandle user, int density);
  
      /**
       * If the target user is a managed profile of the calling user or the caller
       * is itself a managed profile, then this returns a drawable to use as a small
       * icon to include in a view to distinguish it from the original icon. This version
       * doesn't have background protection and should be used over a light background instead of
       * a badge.
       *
       * @param user The target user.
       * @param density The optional desired density for the badge as per
       *         {@link android.util.DisplayMetrics#densityDpi}. If not provided
       *         the density of the current display is used.
       * @return the drawable or null if no drawable is required.
       * @hide
       */
      @Nullable
      @UnsupportedAppUsage
      public abstract Drawable getUserBadgeForDensityNoBackground(@NonNull UserHandle user,
              int density);
  
      /**
       * If the target user is a managed profile of the calling user or the caller
       * is itself a managed profile, then this returns a copy of the label with
       * badging for accessibility services like talkback. E.g. passing in "Email"
       * and it might return "Work Email" for Email in the work profile.
       *
       * @param label The label to change.
       * @param user The target user.
       * @return A label that combines the original label and a badge as
       *         determined by the system.
       */
      @NonNull
      public abstract CharSequence getUserBadgedLabel(@NonNull CharSequence label,
              @NonNull UserHandle user);
  
      /**
       * Retrieve text from a package.  This is a low-level API used by
       * the various package manager info structures (such as
       * {@link ComponentInfo} to implement retrieval of their associated
       * labels and other text.
       *
       * @param packageName The name of the package that this text is coming from.
       * Cannot be null.
       * @param resid The resource identifier of the desired text.  Cannot be 0.
       * @param appInfo Overall information about <var>packageName</var>.  This
       * may be null, in which case the application information will be retrieved
       * for you if needed; if you already have this information around, it can
       * be much more efficient to supply it here.
       *
       * @return Returns a CharSequence holding the requested text.  Returns null
       * if the text could not be found for any reason.
       */
      @Nullable
      public abstract CharSequence getText(@NonNull String packageName, @StringRes int resid,
              @Nullable ApplicationInfo appInfo);
  
      /**
       * Retrieve an XML file from a package.  This is a low-level API used to
       * retrieve XML meta data.
       *
       * @param packageName The name of the package that this xml is coming from.
       * Cannot be null.
       * @param resid The resource identifier of the desired xml.  Cannot be 0.
       * @param appInfo Overall information about <var>packageName</var>.  This
       * may be null, in which case the application information will be retrieved
       * for you if needed; if you already have this information around, it can
       * be much more efficient to supply it here.
       *
       * @return Returns an XmlPullParser allowing you to parse out the XML
       * data.  Returns null if the xml resource could not be found for any
       * reason.
       */
      @Nullable
      public abstract XmlResourceParser getXml(@NonNull String packageName, @XmlRes int resid,
              @Nullable ApplicationInfo appInfo);
  
      /**
       * Return the label to use for this application.
       *
       * @return Returns the label associated with this application, or null if
       * it could not be found for any reason.
       * @param info The application to get the label of.
       */
      @NonNull
      public abstract CharSequence getApplicationLabel(@NonNull ApplicationInfo info);
  
      /**
       * Retrieve the resources associated with an activity.  Given the full
       * name of an activity, retrieves the information about it and calls
       * getResources() to return its application's resources.  If the activity
       * cannot be found, NameNotFoundException is thrown.
       *
       * @param activityName Name of the activity whose resources are to be
       *                     retrieved.
       *
       * @return Returns the application's Resources.
       * @throws NameNotFoundException Thrown if the resources for the given
       * application could not be loaded.
       *
       * @see #getResourcesForApplication(ApplicationInfo)
       */
      @NonNull
      public abstract Resources getResourcesForActivity(@NonNull ComponentName activityName)
              throws NameNotFoundException;
  
      /**
       * Retrieve the resources for an application.  Throws NameNotFoundException
       * if the package is no longer installed.
       *
       * @param app Information about the desired application.
       *
       * @return Returns the application's Resources.
       * @throws NameNotFoundException Thrown if the resources for the given
       * application could not be loaded (most likely because it was uninstalled).
       */
      @NonNull
      public abstract Resources getResourcesForApplication(@NonNull ApplicationInfo app)
              throws NameNotFoundException;
  
      /**
       * Retrieve the resources associated with an application.  Given the full
       * package name of an application, retrieves the information about it and
       * calls getResources() to return its application's resources.  If the
       * appPackageName cannot be found, NameNotFoundException is thrown.
       *
       * @param packageName Package name of the application whose resources
       *                       are to be retrieved.
       *
       * @return Returns the application's Resources.
       * @throws NameNotFoundException Thrown if the resources for the given
       * application could not be loaded.
       *
       * @see #getResourcesForApplication(ApplicationInfo)
       */
      @NonNull
      public abstract Resources getResourcesForApplication(@NonNull String packageName)
              throws NameNotFoundException;
  
      /** @hide */
      @NonNull
      @UnsupportedAppUsage
      public abstract Resources getResourcesForApplicationAsUser(@NonNull String packageName,
              @UserIdInt int userId) throws NameNotFoundException;
  
      /**
       * Retrieve overall information about an application package defined in a
       * package archive file
       *
       * @param archiveFilePath The path to the archive file
       * @param flags Additional option flags to modify the data returned.
       * @return A PackageInfo object containing information about the package
       *         archive. If the package could not be parsed, returns null.
       */
      @Nullable
      public PackageInfo getPackageArchiveInfo(@NonNull String archiveFilePath,
              @PackageInfoFlags int flags) {
          final PackageParser parser = new PackageParser();
          parser.setCallback(new PackageParser.CallbackImpl(this));
          final File apkFile = new File(archiveFilePath);
          try {
              if ((flags & (MATCH_DIRECT_BOOT_UNAWARE | MATCH_DIRECT_BOOT_AWARE)) != 0) {
                  // Caller expressed an explicit opinion about what encryption
                  // aware/unaware components they want to see, so fall through and
                  // give them what they want
              } else {
                  // Caller expressed no opinion, so match everything
                  flags |= MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE;
              }
  
              PackageParser.Package pkg = parser.parseMonolithicPackage(apkFile, 0);
              if ((flags & GET_SIGNATURES) != 0) {
                  PackageParser.collectCertificates(pkg, false /* skipVerify */);
              }
              PackageUserState state = new PackageUserState();
              return PackageParser.generatePackageInfo(pkg, null, flags, 0, 0, null, state);
          } catch (PackageParserException e) {
              return null;
          }
      }
  
      /**
       * If there is already an application with the given package name installed
       * on the system for other users, also install it for the calling user.
       * @hide
       *
       * @deprecated use {@link PackageInstaller#installExistingPackage()} instead.
       */
      @Deprecated
      @SystemApi
      public abstract int installExistingPackage(@NonNull String packageName)
              throws NameNotFoundException;
  
      /**
       * If there is already an application with the given package name installed
       * on the system for other users, also install it for the calling user.
       * @hide
       *
       * @deprecated use {@link PackageInstaller#installExistingPackage()} instead.
       */
      @Deprecated
      @SystemApi
      public abstract int installExistingPackage(@NonNull String packageName,
              @InstallReason int installReason) throws NameNotFoundException;
  
      /**
       * If there is already an application with the given package name installed
       * on the system for other users, also install it for the specified user.
       * @hide
       *
       * @deprecated use {@link PackageInstaller#installExistingPackage()} instead.
       */
      @Deprecated
      @RequiresPermission(anyOf = {
              Manifest.permission.INSTALL_EXISTING_PACKAGES,
              Manifest.permission.INSTALL_PACKAGES,
              Manifest.permission.INTERACT_ACROSS_USERS_FULL})
      @UnsupportedAppUsage
      public abstract int installExistingPackageAsUser(@NonNull String packageName,
              @UserIdInt int userId) throws NameNotFoundException;
  
      /**
       * Allows a package listening to the
       * {@link Intent#ACTION_PACKAGE_NEEDS_VERIFICATION package verification
       * broadcast} to respond to the package manager. The response must include
       * the {@code verificationCode} which is one of
       * {@link PackageManager#VERIFICATION_ALLOW} or
       * {@link PackageManager#VERIFICATION_REJECT}.
       *
       * @param id pending package identifier as passed via the
       *            {@link PackageManager#EXTRA_VERIFICATION_ID} Intent extra.
       * @param verificationCode either {@link PackageManager#VERIFICATION_ALLOW}
       *            or {@link PackageManager#VERIFICATION_REJECT}.
       * @throws SecurityException if the caller does not have the
       *            PACKAGE_VERIFICATION_AGENT permission.
       */
      public abstract void verifyPendingInstall(int id, int verificationCode);
  
      /**
       * Allows a package listening to the
       * {@link Intent#ACTION_PACKAGE_NEEDS_VERIFICATION package verification
       * broadcast} to extend the default timeout for a response and declare what
       * action to perform after the timeout occurs. The response must include
       * the {@code verificationCodeAtTimeout} which is one of
       * {@link PackageManager#VERIFICATION_ALLOW} or
       * {@link PackageManager#VERIFICATION_REJECT}.
       *
       * This method may only be called once per package id. Additional calls
       * will have no effect.
       *
       * @param id pending package identifier as passed via the
       *            {@link PackageManager#EXTRA_VERIFICATION_ID} Intent extra.
       * @param verificationCodeAtTimeout either
       *            {@link PackageManager#VERIFICATION_ALLOW} or
       *            {@link PackageManager#VERIFICATION_REJECT}. If
       *            {@code verificationCodeAtTimeout} is neither
       *            {@link PackageManager#VERIFICATION_ALLOW} or
       *            {@link PackageManager#VERIFICATION_REJECT}, then
       *            {@code verificationCodeAtTimeout} will default to
       *            {@link PackageManager#VERIFICATION_REJECT}.
       * @param millisecondsToDelay the amount of time requested for the timeout.
       *            Must be positive and less than
       *            {@link PackageManager#MAXIMUM_VERIFICATION_TIMEOUT}. If
       *            {@code millisecondsToDelay} is out of bounds,
       *            {@code millisecondsToDelay} will be set to the closest in
       *            bounds value; namely, 0 or
       *            {@link PackageManager#MAXIMUM_VERIFICATION_TIMEOUT}.
       * @throws SecurityException if the caller does not have the
       *            PACKAGE_VERIFICATION_AGENT permission.
       */
      public abstract void extendVerificationTimeout(int id,
              int verificationCodeAtTimeout, long millisecondsToDelay);
  
      /**
       * Allows a package listening to the
       * {@link Intent#ACTION_INTENT_FILTER_NEEDS_VERIFICATION} intent filter verification
       * broadcast to respond to the package manager. The response must include
       * the {@code verificationCode} which is one of
       * {@link PackageManager#INTENT_FILTER_VERIFICATION_SUCCESS} or
       * {@link PackageManager#INTENT_FILTER_VERIFICATION_FAILURE}.
       *
       * @param verificationId pending package identifier as passed via the
       *            {@link PackageManager#EXTRA_VERIFICATION_ID} Intent extra.
       * @param verificationCode either {@link PackageManager#INTENT_FILTER_VERIFICATION_SUCCESS}
       *            or {@link PackageManager#INTENT_FILTER_VERIFICATION_FAILURE}.
       * @param failedDomains a list of failed domains if the verificationCode is
       *            {@link PackageManager#INTENT_FILTER_VERIFICATION_FAILURE}, otherwise null;
       * @throws SecurityException if the caller does not have the
       *            INTENT_FILTER_VERIFICATION_AGENT permission.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.INTENT_FILTER_VERIFICATION_AGENT)
      public abstract void verifyIntentFilter(int verificationId, int verificationCode,
              @NonNull List<String> failedDomains);
  
      /**
       * Get the status of a Domain Verification Result for an IntentFilter. This is
       * related to the {@link android.content.IntentFilter#setAutoVerify(boolean)} and
       * {@link android.content.IntentFilter#getAutoVerify()}
       *
       * This is used by the ResolverActivity to change the status depending on what the User select
       * in the Disambiguation Dialog and also used by the Settings App for changing the default App
       * for a domain.
       *
       * @param packageName The package name of the Activity associated with the IntentFilter.
       * @param userId The user id.
       *
       * @return The status to set to. This can be
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ASK} or
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS} or
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_NEVER} or
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_UNDEFINED}
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL)
      public abstract int getIntentVerificationStatusAsUser(@NonNull String packageName,
              @UserIdInt int userId);
  
      /**
       * Allow to change the status of a Intent Verification status for all IntentFilter of an App.
       * This is related to the {@link android.content.IntentFilter#setAutoVerify(boolean)} and
       * {@link android.content.IntentFilter#getAutoVerify()}
       *
       * This is used by the ResolverActivity to change the status depending on what the User select
       * in the Disambiguation Dialog and also used by the Settings App for changing the default App
       * for a domain.
       *
       * @param packageName The package name of the Activity associated with the IntentFilter.
       * @param status The status to set to. This can be
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ASK} or
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_ALWAYS} or
       *              {@link #INTENT_FILTER_DOMAIN_VERIFICATION_STATUS_NEVER}
       * @param userId The user id.
       *
       * @return true if the status has been set. False otherwise.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.SET_PREFERRED_APPLICATIONS)
      public abstract boolean updateIntentVerificationStatusAsUser(@NonNull String packageName,
              int status, @UserIdInt int userId);
  
      /**
       * Get the list of IntentFilterVerificationInfo for a specific package and User.
       *
       * @param packageName the package name. When this parameter is set to a non null value,
       *                    the results will be filtered by the package name provided.
       *                    Otherwise, there will be no filtering and it will return a list
       *                    corresponding for all packages
       *
       * @return a list of IntentFilterVerificationInfo for a specific package.
       *
       * @hide
       */
      @NonNull
      @SystemApi
      public abstract List<IntentFilterVerificationInfo> getIntentFilterVerifications(
              @NonNull String packageName);
  
      /**
       * Get the list of IntentFilter for a specific package.
       *
       * @param packageName the package name. This parameter is set to a non null value,
       *                    the list will contain all the IntentFilter for that package.
       *                    Otherwise, the list will be empty.
       *
       * @return a list of IntentFilter for a specific package.
       *
       * @hide
       */
      @NonNull
      @SystemApi
      public abstract List<IntentFilter> getAllIntentFilters(@NonNull String packageName);
  
      /**
       * Get the default Browser package name for a specific user.
       *
       * @param userId The user id.
       *
       * @return the package name of the default Browser for the specified user. If the user id passed
       *         is -1 (all users) it will return a null value.
       *
       * @hide
       */
      @Nullable
      @TestApi
      @SystemApi
      @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL)
      public abstract String getDefaultBrowserPackageNameAsUser(@UserIdInt int userId);
  
      /**
       * Set the default Browser package name for a specific user.
       *
       * @param packageName The package name of the default Browser.
       * @param userId The user id.
       *
       * @return true if the default Browser for the specified user has been set,
       *         otherwise return false. If the user id passed is -1 (all users) this call will not
       *         do anything and just return false.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(allOf = {
              Manifest.permission.SET_PREFERRED_APPLICATIONS,
              Manifest.permission.INTERACT_ACROSS_USERS_FULL})
      public abstract boolean setDefaultBrowserPackageNameAsUser(@Nullable String packageName,
              @UserIdInt int userId);
  
      /**
       * Change the installer associated with a given package.  There are limitations
       * on how the installer package can be changed; in particular:
       * <ul>
       * <li> A SecurityException will be thrown if <var>installerPackageName</var>
       * is not signed with the same certificate as the calling application.
       * <li> A SecurityException will be thrown if <var>targetPackage</var> already
       * has an installer package, and that installer package is not signed with
       * the same certificate as the calling application.
       * </ul>
       *
       * @param targetPackage The installed package whose installer will be changed.
       * @param installerPackageName The package name of the new installer.  May be
       * null to clear the association.
       */
      public abstract void setInstallerPackageName(@NonNull String targetPackage,
              @Nullable String installerPackageName);
  
      /** @hide */
      @SystemApi
      @RequiresPermission(Manifest.permission.INSTALL_PACKAGES)
      public abstract void setUpdateAvailable(@NonNull String packageName, boolean updateAvaialble);
  
      /**
       * Attempts to delete a package. Since this may take a little while, the
       * result will be posted back to the given observer. A deletion will fail if
       * the calling context lacks the
       * {@link android.Manifest.permission#DELETE_PACKAGES} permission, if the
       * named package cannot be found, or if the named package is a system
       * package.
       *
       * @param packageName The name of the package to delete
       * @param observer An observer callback to get notified when the package
       *            deletion is complete.
       *            {@link android.content.pm.IPackageDeleteObserver#packageDeleted}
       *            will be called when that happens. observer may be null to
       *            indicate that no callback is desired.
       * @hide
       */
      @RequiresPermission(Manifest.permission.DELETE_PACKAGES)
      @UnsupportedAppUsage
      public abstract void deletePackage(@NonNull String packageName,
              @Nullable IPackageDeleteObserver observer, @DeleteFlags int flags);
  
      /**
       * Attempts to delete a package. Since this may take a little while, the
       * result will be posted back to the given observer. A deletion will fail if
       * the named package cannot be found, or if the named package is a system
       * package.
       *
       * @param packageName The name of the package to delete
       * @param observer An observer callback to get notified when the package
       *            deletion is complete.
       *            {@link android.content.pm.IPackageDeleteObserver#packageDeleted}
       *            will be called when that happens. observer may be null to
       *            indicate that no callback is desired.
       * @param userId The user Id
       * @hide
       */
      @RequiresPermission(anyOf = {
              Manifest.permission.DELETE_PACKAGES,
              Manifest.permission.INTERACT_ACROSS_USERS_FULL})
      @UnsupportedAppUsage
      public abstract void deletePackageAsUser(@NonNull String packageName,
              @Nullable IPackageDeleteObserver observer, @DeleteFlags int flags,
              @UserIdInt int userId);
  
      /**
       * Retrieve the package name of the application that installed a package. This identifies
       * which market the package came from.
       *
       * @param packageName The name of the package to query
       * @throws IllegalArgumentException if the given package name is not installed
       */
      @Nullable
      public abstract String getInstallerPackageName(@NonNull String packageName);
  
      /**
       * Attempts to clear the user data directory of an application.
       * Since this may take a little while, the result will
       * be posted back to the given observer.  A deletion will fail if the
       * named package cannot be found, or if the named package is a "system package".
       *
       * @param packageName The name of the package
       * @param observer An observer callback to get notified when the operation is finished
       * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
       * will be called when that happens.  observer may be null to indicate that
       * no callback is desired.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void clearApplicationUserData(@NonNull String packageName,
              @Nullable IPackageDataObserver observer);
      /**
       * Attempts to delete the cache files associated with an application.
       * Since this may take a little while, the result will
       * be posted back to the given observer.  A deletion will fail if the calling context
       * lacks the {@link android.Manifest.permission#DELETE_CACHE_FILES} permission, if the
       * named package cannot be found, or if the named package is a "system package".
       *
       * @param packageName The name of the package to delete
       * @param observer An observer callback to get notified when the cache file deletion
       * is complete.
       * {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
       * will be called when that happens.  observer may be null to indicate that
       * no callback is desired.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void deleteApplicationCacheFiles(@NonNull String packageName,
              @Nullable IPackageDataObserver observer);
  
      /**
       * Attempts to delete the cache files associated with an application for a given user. Since
       * this may take a little while, the result will be posted back to the given observer. A
       * deletion will fail if the calling context lacks the
       * {@link android.Manifest.permission#DELETE_CACHE_FILES} permission, if the named package
       * cannot be found, or if the named package is a "system package". If {@code userId} does not
       * belong to the calling user, the caller must have
       * {@link android.Manifest.permission#INTERACT_ACROSS_USERS} permission.
       *
       * @param packageName The name of the package to delete
       * @param userId the user for which the cache files needs to be deleted
       * @param observer An observer callback to get notified when the cache file deletion is
       *            complete.
       *            {@link android.content.pm.IPackageDataObserver#onRemoveCompleted(String, boolean)}
       *            will be called when that happens. observer may be null to indicate that no
       *            callback is desired.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void deleteApplicationCacheFilesAsUser(@NonNull String packageName,
              @UserIdInt int userId, @Nullable IPackageDataObserver observer);
  
      /**
       * Free storage by deleting LRU sorted list of cache files across
       * all applications. If the currently available free storage
       * on the device is greater than or equal to the requested
       * free storage, no cache files are cleared. If the currently
       * available storage on the device is less than the requested
       * free storage, some or all of the cache files across
       * all applications are deleted (based on last accessed time)
       * to increase the free storage space on the device to
       * the requested value. There is no guarantee that clearing all
       * the cache files from all applications will clear up
       * enough storage to achieve the desired value.
       * @param freeStorageSize The number of bytes of storage to be
       * freed by the system. Say if freeStorageSize is XX,
       * and the current free storage is YY,
       * if XX is less than YY, just return. if not free XX-YY number
       * of bytes if possible.
       * @param observer call back used to notify when
       * the operation is completed
       *
       * @hide
       */
      @UnsupportedAppUsage
      public void freeStorageAndNotify(long freeStorageSize,
              @Nullable IPackageDataObserver observer) {
          freeStorageAndNotify(null, freeStorageSize, observer);
      }
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract void freeStorageAndNotify(@Nullable String volumeUuid, long freeStorageSize,
              @Nullable IPackageDataObserver observer);
  
      /**
       * Free storage by deleting LRU sorted list of cache files across
       * all applications. If the currently available free storage
       * on the device is greater than or equal to the requested
       * free storage, no cache files are cleared. If the currently
       * available storage on the device is less than the requested
       * free storage, some or all of the cache files across
       * all applications are deleted (based on last accessed time)
       * to increase the free storage space on the device to
       * the requested value. There is no guarantee that clearing all
       * the cache files from all applications will clear up
       * enough storage to achieve the desired value.
       * @param freeStorageSize The number of bytes of storage to be
       * freed by the system. Say if freeStorageSize is XX,
       * and the current free storage is YY,
       * if XX is less than YY, just return. if not free XX-YY number
       * of bytes if possible.
       * @param pi IntentSender call back used to
       * notify when the operation is completed.May be null
       * to indicate that no call back is desired.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public void freeStorage(long freeStorageSize, @Nullable IntentSender pi) {
          freeStorage(null, freeStorageSize, pi);
      }
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract void freeStorage(@Nullable String volumeUuid, long freeStorageSize,
              @Nullable IntentSender pi);
  
      /**
       * Retrieve the size information for a package.
       * Since this may take a little while, the result will
       * be posted back to the given observer.  The calling context
       * should have the {@link android.Manifest.permission#GET_PACKAGE_SIZE} permission.
       *
       * @param packageName The name of the package whose size information is to be retrieved
       * @param userId The user whose size information should be retrieved.
       * @param observer An observer callback to get notified when the operation
       * is complete.
       * {@link android.content.pm.IPackageStatsObserver#onGetStatsCompleted(PackageStats, boolean)}
       * The observer's callback is invoked with a PackageStats object(containing the
       * code, data and cache sizes of the package) and a boolean value representing
       * the status of the operation. observer may be null to indicate that
       * no callback is desired.
       *
       * @deprecated use {@link StorageStatsManager} instead.
       * @hide
       */
      @Deprecated
      @UnsupportedAppUsage
      public abstract void getPackageSizeInfoAsUser(@NonNull String packageName,
              @UserIdInt int userId, @Nullable IPackageStatsObserver observer);
  
      /**
       * Like {@link #getPackageSizeInfoAsUser(String, int, IPackageStatsObserver)}, but
       * returns the size for the calling user.
       *
       * @deprecated use {@link StorageStatsManager} instead.
       * @hide
       */
      @Deprecated
      @UnsupportedAppUsage
      public void getPackageSizeInfo(@NonNull String packageName, IPackageStatsObserver observer) {
          getPackageSizeInfoAsUser(packageName, getUserId(), observer);
      }
  
      /**
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      public abstract void addPackageToPreferred(@NonNull String packageName);
  
      /**
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      public abstract void removePackageFromPreferred(@NonNull String packageName);
  
      /**
       * Retrieve the list of all currently configured preferred packages. The
       * first package on the list is the most preferred, the last is the least
       * preferred.
       *
       * @param flags Additional option flags to modify the data returned.
       * @return A List of PackageInfo objects, one for each preferred
       *         application, in order of preference.
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @NonNull
      @Deprecated
      public abstract List<PackageInfo> getPreferredPackages(@PackageInfoFlags int flags);
  
      /**
       * Add a new preferred activity mapping to the system.  This will be used
       * to automatically select the given activity component when
       * {@link Context#startActivity(Intent) Context.startActivity()} finds
       * multiple matching activities and also matches the given filter.
       *
       * @param filter The set of intents under which this activity will be
       * made preferred.
       * @param match The IntentFilter match category that this preference
       * applies to.
       * @param set The set of activities that the user was picking from when
       * this preference was made.
       * @param activity The component name of the activity that is to be
       * preferred.
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      public abstract void addPreferredActivity(@NonNull IntentFilter filter, int match,
              @Nullable ComponentName[] set, @NonNull ComponentName activity);
  
      /**
       * Same as {@link #addPreferredActivity(IntentFilter, int,
              ComponentName[], ComponentName)}, but with a specific userId to apply the preference
              to.
       * @hide
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      @UnsupportedAppUsage
      public void addPreferredActivityAsUser(@NonNull IntentFilter filter, int match,
              @Nullable ComponentName[] set, @NonNull ComponentName activity, @UserIdInt int userId) {
          throw new RuntimeException("Not implemented. Must override in a subclass.");
      }
  
      /**
       * Replaces an existing preferred activity mapping to the system, and if that were not present
       * adds a new preferred activity.  This will be used
       * to automatically select the given activity component when
       * {@link Context#startActivity(Intent) Context.startActivity()} finds
       * multiple matching activities and also matches the given filter.
       *
       * @param filter The set of intents under which this activity will be
       * made preferred.
       * @param match The IntentFilter match category that this preference
       * applies to.
       * @param set The set of activities that the user was picking from when
       * this preference was made.
       * @param activity The component name of the activity that is to be
       * preferred.
       *
       * @hide
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      @UnsupportedAppUsage
      public abstract void replacePreferredActivity(@NonNull IntentFilter filter, int match,
              @Nullable ComponentName[] set, @NonNull ComponentName activity);
  
      /**
       * Replaces an existing preferred activity mapping to the system, and if that were not present
       * adds a new preferred activity.  This will be used to automatically select the given activity
       * component when {@link Context#startActivity(Intent) Context.startActivity()} finds multiple
       * matching activities and also matches the given filter.
       *
       * @param filter The set of intents under which this activity will be made preferred.
       * @param match The IntentFilter match category that this preference applies to. Should be a
       *              combination of {@link IntentFilter#MATCH_CATEGORY_MASK} and
       *              {@link IntentFilter#MATCH_ADJUSTMENT_MASK}).
       * @param set The set of activities that the user was picking from when this preference was
       *            made.
       * @param activity The component name of the activity that is to be preferred.
       *
       * @hide
       */
      @SystemApi
      public void replacePreferredActivity(@NonNull IntentFilter filter, int match,
              @NonNull List<ComponentName> set, @NonNull ComponentName activity) {
          replacePreferredActivity(filter, match, set.toArray(new ComponentName[0]), activity);
      }
  
      /**
       * @hide
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      @UnsupportedAppUsage
      public void replacePreferredActivityAsUser(@NonNull IntentFilter filter, int match,
              @Nullable ComponentName[] set, @NonNull ComponentName activity, @UserIdInt int userId) {
          throw new RuntimeException("Not implemented. Must override in a subclass.");
      }
  
      /**
       * Remove all preferred activity mappings, previously added with
       * {@link #addPreferredActivity}, from the
       * system whose activities are implemented in the given package name.
       * An application can only clear its own package(s).
       *
       * @param packageName The name of the package whose preferred activity
       * mappings are to be removed.
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      public abstract void clearPackagePreferredActivities(@NonNull String packageName);
  
      /**
       * Retrieve all preferred activities, previously added with
       * {@link #addPreferredActivity}, that are
       * currently registered with the system.
       *
       * @param outFilters A required list in which to place the filters of all of the
       * preferred activities.
       * @param outActivities A required list in which to place the component names of
       * all of the preferred activities.
       * @param packageName An optional package in which you would like to limit
       * the list.  If null, all activities will be returned; if non-null, only
       * those activities in the given package are returned.
       *
       * @return Returns the total number of registered preferred activities
       * (the number of distinct IntentFilter records, not the number of unique
       * activity components) that were found.
       *
       * @deprecated This function no longer does anything. It is the platform's
       * responsibility to assign preferred activities and this cannot be modified
       * directly. To determine the activities resolved by the platform, use
       * {@link #resolveActivity} or {@link #queryIntentActivities}. To configure
       * an app to be responsible for a particular role and to check current role
       * holders, see {@link android.app.role.RoleManager}.
       */
      @Deprecated
      public abstract int getPreferredActivities(@NonNull List<IntentFilter> outFilters,
              @NonNull List<ComponentName> outActivities, @Nullable String packageName);
  
      /**
       * Ask for the set of available 'home' activities and the current explicit
       * default, if any.
       * @hide
       */
      @Nullable
      @UnsupportedAppUsage
      public abstract ComponentName getHomeActivities(@NonNull List<ResolveInfo> outActivities);
  
      /**
       * Set the enabled setting for a package component (activity, receiver, service, provider).
       * This setting will override any enabled state which may have been set by the component in its
       * manifest.
       *
       * @param componentName The component to enable
       * @param newState The new enabled state for the component.
       * @param flags Optional behavior flags.
       */
      @RequiresPermission(value = android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE,
              conditional = true)
      public abstract void setComponentEnabledSetting(@NonNull ComponentName componentName,
              @EnabledState int newState, @EnabledFlags int flags);
  
      /**
       * Return the enabled setting for a package component (activity,
       * receiver, service, provider).  This returns the last value set by
       * {@link #setComponentEnabledSetting(ComponentName, int, int)}; in most
       * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
       * the value originally specified in the manifest has not been modified.
       *
       * @param componentName The component to retrieve.
       * @return Returns the current enabled state for the component.
       */
      public abstract @EnabledState int getComponentEnabledSetting(
              @NonNull ComponentName componentName);
  
      /**
       * Set whether a synthetic app details activity will be generated if the app has no enabled
       * launcher activity. Disabling this allows the app to have no launcher icon.
       *
       * @param packageName The package name of the app
       * @param enabled The new enabled state for the synthetic app details activity.
       *
       * @hide
       */
      @RequiresPermission(value = android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE,
              conditional = true)
      @SystemApi
      public void setSyntheticAppDetailsActivityEnabled(@NonNull String packageName,
              boolean enabled) {
          throw new UnsupportedOperationException(
                  "setSyntheticAppDetailsActivityEnabled not implemented");
      }
  
  
      /**
       * Return whether a synthetic app details activity will be generated if the app has no enabled
       * launcher activity.
       *
       * @param packageName The package name of the app
       * @return Returns the enabled state for the synthetic app details activity.
       *
       *
       */
      public boolean getSyntheticAppDetailsActivityEnabled(@NonNull String packageName) {
          throw new UnsupportedOperationException(
                  "getSyntheticAppDetailsActivityEnabled not implemented");
      }
  
      /**
       * Set the enabled setting for an application
       * This setting will override any enabled state which may have been set by the application in
       * its manifest.  It also overrides the enabled state set in the manifest for any of the
       * application's components.  It does not override any enabled state set by
       * {@link #setComponentEnabledSetting} for any of the application's components.
       *
       * @param packageName The package name of the application to enable
       * @param newState The new enabled state for the application.
       * @param flags Optional behavior flags.
       */
      @RequiresPermission(value = android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE,
              conditional = true)
      public abstract void setApplicationEnabledSetting(@NonNull String packageName,
              @EnabledState int newState, @EnabledFlags int flags);
  
      /**
       * Return the enabled setting for an application. This returns
       * the last value set by
       * {@link #setApplicationEnabledSetting(String, int, int)}; in most
       * cases this value will be {@link #COMPONENT_ENABLED_STATE_DEFAULT} since
       * the value originally specified in the manifest has not been modified.
       *
       * @param packageName The package name of the application to retrieve.
       * @return Returns the current enabled state for the application.
       * @throws IllegalArgumentException if the named package does not exist.
       */
      public abstract @EnabledState int getApplicationEnabledSetting(@NonNull String packageName);
  
      /**
       * Flush the package restrictions for a given user to disk. This forces the package restrictions
       * like component and package enabled settings to be written to disk and avoids the delay that
       * is otherwise present when changing those settings.
       *
       * @param userId Ther userId of the user whose restrictions are to be flushed.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void flushPackageRestrictionsAsUser(@UserIdInt int userId);
  
      /**
       * Puts the package in a hidden state, which is almost like an uninstalled state,
       * making the package unavailable, but it doesn't remove the data or the actual
       * package file. Application can be unhidden by either resetting the hidden state
       * or by installing it, such as with {@link #installExistingPackage(String)}
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean setApplicationHiddenSettingAsUser(@NonNull String packageName,
              boolean hidden, @NonNull UserHandle userHandle);
  
      /**
       * Returns the hidden state of a package.
       * @see #setApplicationHiddenSettingAsUser(String, boolean, UserHandle)
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean getApplicationHiddenSettingAsUser(@NonNull String packageName,
              @NonNull UserHandle userHandle);
  
      /**
       * Return whether the device has been booted into safe mode.
       */
      public abstract boolean isSafeMode();
  
      /**
       * Adds a listener for permission changes for installed packages.
       *
       * @param listener The listener to add.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS)
      public abstract void addOnPermissionsChangeListener(
              @NonNull OnPermissionsChangedListener listener);
  
      /**
       * Remvoes a listener for permission changes for installed packages.
       *
       * @param listener The listener to remove.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS)
      public abstract void removeOnPermissionsChangeListener(
              @NonNull OnPermissionsChangedListener listener);
  
      /**
       * Return the {@link KeySet} associated with the String alias for this
       * application.
       *
       * @param alias The alias for a given {@link KeySet} as defined in the
       *        application's AndroidManifest.xml.
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract KeySet getKeySetByAlias(@NonNull String packageName, @NonNull String alias);
  
      /** Return the signing {@link KeySet} for this application.
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract KeySet getSigningKeySet(@NonNull String packageName);
  
      /**
       * Return whether the package denoted by packageName has been signed by all
       * of the keys specified by the {@link KeySet} ks.  This will return true if
       * the package has been signed by additional keys (a superset) as well.
       * Compare to {@link #isSignedByExactly(String packageName, KeySet ks)}.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean isSignedBy(@NonNull String packageName, @NonNull KeySet ks);
  
      /**
       * Return whether the package denoted by packageName has been signed by all
       * of, and only, the keys specified by the {@link KeySet} ks. Compare to
       * {@link #isSignedBy(String packageName, KeySet ks)}.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean isSignedByExactly(@NonNull String packageName, @NonNull KeySet ks);
  
      /**
       * Flag to denote no restrictions. This should be used to clear any restrictions that may have
       * been previously set for the package.
       * @hide
       * @see #setDistractingPackageRestrictions(String[], int)
       */
      @SystemApi
      public static final int RESTRICTION_NONE = 0x0;
  
      /**
       * Flag to denote that a package should be hidden from any suggestions to the user.
       * @hide
       * @see #setDistractingPackageRestrictions(String[], int)
       */
      @SystemApi
      public static final int RESTRICTION_HIDE_FROM_SUGGESTIONS = 0x00000001;
  
      /**
       * Flag to denote that a package's notifications should be hidden.
       * @hide
       * @see #setDistractingPackageRestrictions(String[], int)
       */
      @SystemApi
      public static final int RESTRICTION_HIDE_NOTIFICATIONS = 0x00000002;
  
      /**
       * Restriction flags to set on a package that is considered as distracting to the user.
       * These should help the user to restrict their usage of these apps.
       *
       * @see #setDistractingPackageRestrictions(String[], int)
       * @hide
       */
      @IntDef(flag = true, prefix = {"RESTRICTION_"}, value = {
              RESTRICTION_NONE,
              RESTRICTION_HIDE_FROM_SUGGESTIONS,
              RESTRICTION_HIDE_NOTIFICATIONS
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface DistractionRestriction {}
  
      /**
       * Mark or unmark the given packages as distracting to the user.
       * These packages can have certain restrictions set that should discourage the user to launch
       * them often. For example, notifications from such an app can be hidden, or the app can be
       * removed from launcher suggestions, so the user is able to restrict their use of these apps.
       *
       * <p>The caller must hold {@link android.Manifest.permission#SUSPEND_APPS} to use this API.
       *
       * @param packages Packages to mark as distracting.
       * @param restrictionFlags Any combination of restrictions to impose on the given packages.
       *                         {@link #RESTRICTION_NONE} can be used to clear any existing
       *                         restrictions.
       * @return A list of packages that could not have the {@code restrictionFlags} set. The system
       * may prevent restricting critical packages to preserve normal device function.
       *
       * @hide
       * @see #RESTRICTION_NONE
       * @see #RESTRICTION_HIDE_FROM_SUGGESTIONS
       * @see #RESTRICTION_HIDE_NOTIFICATIONS
       */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.SUSPEND_APPS)
      @NonNull
      public String[] setDistractingPackageRestrictions(@NonNull String[] packages,
              @DistractionRestriction int restrictionFlags) {
          throw new UnsupportedOperationException(
                  "setDistractingPackageRestrictions not implemented");
      }
  
      /**
       * Puts the package in a suspended state, where attempts at starting activities are denied.
       *
       * <p>It doesn't remove the data or the actual package file. The application's notifications
       * will be hidden, any of its started activities will be stopped and it will not be able to
       * show toasts or system alert windows or ring the device.
       *
       * <p>When the user tries to launch a suspended app, a system dialog with the given
       * {@code dialogMessage} will be shown instead. Since the message is supplied to the system as
       * a {@link String}, the caller needs to take care of localization as needed.
       * The dialog message can optionally contain a placeholder for the name of the suspended app.
       * The system uses {@link String#format(Locale, String, Object...) String.format} to insert the
       * app name into the message, so an example format string could be {@code "The app %1$s is
       * currently suspended"}. This makes it easier for callers to provide a single message which
       * works for all the packages being suspended in a single call.
       *
       * <p>The package must already be installed. If the package is uninstalled while suspended
       * the package will no longer be suspended. </p>
       *
       * <p>Optionally, the suspending app can provide extra information in the form of
       * {@link PersistableBundle} objects to be shared with the apps being suspended and the
       * launcher to support customization that they might need to handle the suspended state.
       *
       * <p>The caller must hold {@link Manifest.permission#SUSPEND_APPS} to use this API.
       *
       * @param packageNames The names of the packages to set the suspended status.
       * @param suspended If set to {@code true}, the packages will be suspended, if set to
       * {@code false}, the packages will be unsuspended.
       * @param appExtras An optional {@link PersistableBundle} that the suspending app can provide
       *                  which will be shared with the apps being suspended. Ignored if
       *                  {@code suspended} is false.
       * @param launcherExtras An optional {@link PersistableBundle} that the suspending app can
       *                       provide which will be shared with the launcher. Ignored if
       *                       {@code suspended} is false.
       * @param dialogMessage The message to be displayed to the user, when they try to launch a
       *                      suspended app.
       *
       * @return an array of package names for which the suspended status could not be set as
       * requested in this method. Returns {@code null} if {@code packageNames} was {@code null}.
       *
       * @deprecated use {@link #setPackagesSuspended(String[], boolean, PersistableBundle,
       * PersistableBundle, android.content.pm.SuspendDialogInfo)} instead.
       *
       * @hide
       */
      @SystemApi
      @Deprecated
      @RequiresPermission(Manifest.permission.SUSPEND_APPS)
      @Nullable
      public String[] setPackagesSuspended(@Nullable String[] packageNames, boolean suspended,
              @Nullable PersistableBundle appExtras, @Nullable PersistableBundle launcherExtras,
              @Nullable String dialogMessage) {
          throw new UnsupportedOperationException("setPackagesSuspended not implemented");
      }
  
      /**
       * Puts the given packages in a suspended state, where attempts at starting activities are
       * denied.
       *
       * <p>The suspended application's notifications and all of its windows will be hidden, any
       * of its started activities will be stopped and it won't be able to ring the device.
       * It doesn't remove the data or the actual package file.
       *
       * <p>When the user tries to launch a suspended app, a system dialog alerting them that the app
       * is suspended will be shown instead.
       * The caller can optionally customize the dialog by passing a {@link SuspendDialogInfo} object
       * to this API. This dialog will have a button that starts the
       * {@link Intent#ACTION_SHOW_SUSPENDED_APP_DETAILS} intent if the suspending app declares an
       * activity which handles this action.
       *
       * <p>The packages being suspended must already be installed. If a package is uninstalled, it
       * will no longer be suspended.
       *
       * <p>Optionally, the suspending app can provide extra information in the form of
       * {@link PersistableBundle} objects to be shared with the apps being suspended and the
       * launcher to support customization that they might need to handle the suspended state.
       *
       * <p>The caller must hold {@link Manifest.permission#SUSPEND_APPS} to use this API.
       *
       * @param packageNames The names of the packages to set the suspended status.
       * @param suspended If set to {@code true}, the packages will be suspended, if set to
       * {@code false}, the packages will be unsuspended.
       * @param appExtras An optional {@link PersistableBundle} that the suspending app can provide
       *                  which will be shared with the apps being suspended. Ignored if
       *                  {@code suspended} is false.
       * @param launcherExtras An optional {@link PersistableBundle} that the suspending app can
       *                       provide which will be shared with the launcher. Ignored if
       *                       {@code suspended} is false.
       * @param dialogInfo An optional {@link SuspendDialogInfo} object describing the dialog that
       *                   should be shown to the user when they try to launch a suspended app.
       *                   Ignored if {@code suspended} is false.
       *
       * @return an array of package names for which the suspended status could not be set as
       * requested in this method. Returns {@code null} if {@code packageNames} was {@code null}.
       *
       * @see #isPackageSuspended
       * @see SuspendDialogInfo
       * @see SuspendDialogInfo.Builder
       * @see Intent#ACTION_SHOW_SUSPENDED_APP_DETAILS
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.SUSPEND_APPS)
      @Nullable
      public String[] setPackagesSuspended(@Nullable String[] packageNames, boolean suspended,
              @Nullable PersistableBundle appExtras, @Nullable PersistableBundle launcherExtras,
              @Nullable SuspendDialogInfo dialogInfo) {
          throw new UnsupportedOperationException("setPackagesSuspended not implemented");
      }
  
      /**
       * Returns any packages in a given set of packages that cannot be suspended via a call to {@link
       * #setPackagesSuspended(String[], boolean, PersistableBundle, PersistableBundle,
       * SuspendDialogInfo) setPackagesSuspended}. The platform prevents suspending certain critical
       * packages to keep the device in a functioning state, e.g. the default dialer.
       * Apps need to hold {@link Manifest.permission#SUSPEND_APPS SUSPEND_APPS} to call this API.
       *
       * <p>
       * Note that this set of critical packages can change with time, so even though a package name
       * was not returned by this call, it does not guarantee that a subsequent call to
       * {@link #setPackagesSuspended(String[], boolean, PersistableBundle, PersistableBundle,
       * SuspendDialogInfo) setPackagesSuspended} for that package will succeed, especially if
       * significant time elapsed between the two calls.
       *
       * @param packageNames The packages to check.
       * @return A list of packages that can not be currently suspended by the system.
       * @hide
       */
      @SystemApi
      @RequiresPermission(Manifest.permission.SUSPEND_APPS)
      @NonNull
      public String[] getUnsuspendablePackages(@NonNull String[] packageNames) {
          throw new UnsupportedOperationException("canSuspendPackages not implemented");
      }
  
      /**
       * @see #setPackagesSuspended(String[], boolean, PersistableBundle, PersistableBundle, String)
       * @param packageName The name of the package to get the suspended status of.
       * @param userId The user id.
       * @return {@code true} if the package is suspended or {@code false} if the package is not
       * suspended.
       * @throws IllegalArgumentException if the package was not found.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean isPackageSuspendedForUser(@NonNull String packageName, int userId);
  
      /**
       * Query if an app is currently suspended.
       *
       * @return {@code true} if the given package is suspended, {@code false} otherwise
       * @throws NameNotFoundException if the package could not be found.
       *
       * @see #isPackageSuspended()
       */
      public boolean isPackageSuspended(@NonNull String packageName) throws NameNotFoundException {
          throw new UnsupportedOperationException("isPackageSuspended not implemented");
      }
  
      /**
       * Apps can query this to know if they have been suspended. A system app with the permission
       * {@code android.permission.SUSPEND_APPS} can put any app on the device into a suspended state.
       *
       * <p>While in this state, the application's notifications will be hidden, any of its started
       * activities will be stopped and it will not be able to show toasts or dialogs or play audio.
       * When the user tries to launch a suspended app, the system will, instead, show a
       * dialog to the user informing them that they cannot use this app while it is suspended.
       *
       * <p>When an app is put into this state, the broadcast action
       * {@link Intent#ACTION_MY_PACKAGE_SUSPENDED} will be delivered to any of its broadcast
       * receivers that included this action in their intent-filters, <em>including manifest
       * receivers.</em> Similarly, a broadcast action {@link Intent#ACTION_MY_PACKAGE_UNSUSPENDED}
       * is delivered when a previously suspended app is taken out of this state. Apps are expected to
       * use these to gracefully deal with transitions to and from this state.
       *
       * @return {@code true} if the calling package has been suspended, {@code false} otherwise.
       *
       * @see #getSuspendedPackageAppExtras()
       * @see Intent#ACTION_MY_PACKAGE_SUSPENDED
       * @see Intent#ACTION_MY_PACKAGE_UNSUSPENDED
       */
      public boolean isPackageSuspended() {
          throw new UnsupportedOperationException("isPackageSuspended not implemented");
      }
  
      /**
       * Returns a {@link Bundle} of extras that was meant to be sent to the calling app when it was
       * suspended. An app with the permission {@code android.permission.SUSPEND_APPS} can supply this
       * to the system at the time of suspending an app.
       *
       * <p>This is the same {@link Bundle} that is sent along with the broadcast
       * {@link Intent#ACTION_MY_PACKAGE_SUSPENDED}, whenever the app is suspended. The contents of
       * this {@link Bundle} are a contract between the suspended app and the suspending app.
       *
       * <p>Note: These extras are optional, so if no extras were supplied to the system, this method
       * will return {@code null}, even when the calling app has been suspended.
       *
       * @return A {@link Bundle} containing the extras for the app, or {@code null} if the
       * package is not currently suspended.
       *
       * @see #isPackageSuspended()
       * @see Intent#ACTION_MY_PACKAGE_UNSUSPENDED
       * @see Intent#ACTION_MY_PACKAGE_SUSPENDED
       * @see Intent#EXTRA_SUSPENDED_PACKAGE_EXTRAS
       */
      public @Nullable Bundle getSuspendedPackageAppExtras() {
          throw new UnsupportedOperationException("getSuspendedPackageAppExtras not implemented");
      }
  
      /**
       * Provide a hint of what the {@link ApplicationInfo#category} value should
       * be for the given package.
       * <p>
       * This hint can only be set by the app which installed this package, as
       * determined by {@link #getInstallerPackageName(String)}.
       *
       * @param packageName the package to change the category hint for.
       * @param categoryHint the category hint to set.
       */
      public abstract void setApplicationCategoryHint(@NonNull String packageName,
              @ApplicationInfo.Category int categoryHint);
  
      /** {@hide} */
      public static boolean isMoveStatusFinished(int status) {
          return (status < 0 || status > 100);
      }
  
      /** {@hide} */
      public static abstract class MoveCallback {
          public void onCreated(int moveId, Bundle extras) {}
          public abstract void onStatusChanged(int moveId, int status, long estMillis);
      }
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract int getMoveStatus(int moveId);
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract void registerMoveCallback(@NonNull MoveCallback callback,
              @NonNull Handler handler);
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract void unregisterMoveCallback(@NonNull MoveCallback callback);
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract int movePackage(@NonNull String packageName, @NonNull VolumeInfo vol);
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract @Nullable VolumeInfo getPackageCurrentVolume(@NonNull ApplicationInfo app);
      /** {@hide} */
      @NonNull
      @UnsupportedAppUsage
      public abstract List<VolumeInfo> getPackageCandidateVolumes(
              @NonNull ApplicationInfo app);
  
      /** {@hide} */
      public abstract int movePrimaryStorage(@NonNull VolumeInfo vol);
      /** {@hide} */
      public abstract @Nullable VolumeInfo getPrimaryStorageCurrentVolume();
      /** {@hide} */
      public abstract @NonNull List<VolumeInfo> getPrimaryStorageCandidateVolumes();
  
      /**
       * Returns the device identity that verifiers can use to associate their scheme to a particular
       * device. This should not be used by anything other than a package verifier.
       *
       * @return identity that uniquely identifies current device
       * @hide
       */
      @NonNull
      public abstract VerifierDeviceIdentity getVerifierDeviceIdentity();
  
      /**
       * Returns true if the device is upgrading, such as first boot after OTA.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public abstract boolean isUpgrade();
  
      /**
       * Returns true if the device is upgrading, such as first boot after OTA.
       */
      public boolean isDeviceUpgrading() {
          return false;
      }
  
      /**
       * Return interface that offers the ability to install, upgrade, and remove
       * applications on the device.
       */
      public abstract @NonNull PackageInstaller getPackageInstaller();
  
      /**
       * Adds a {@code CrossProfileIntentFilter}. After calling this method all
       * intents sent from the user with id sourceUserId can also be be resolved
       * by activities in the user with id targetUserId if they match the
       * specified intent filter.
       *
       * @param filter The {@link IntentFilter} the intent has to match
       * @param sourceUserId The source user id.
       * @param targetUserId The target user id.
       * @param flags The possible values are {@link #SKIP_CURRENT_PROFILE} and
       *            {@link #ONLY_IF_NO_MATCH_FOUND}.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void addCrossProfileIntentFilter(@NonNull IntentFilter filter,
              @UserIdInt int sourceUserId, @UserIdInt int targetUserId, int flags);
  
      /**
       * Clearing {@code CrossProfileIntentFilter}s which have the specified user
       * as their source, and have been set by the app calling this method.
       *
       * @param sourceUserId The source user id.
       * @hide
       */
      @UnsupportedAppUsage
      public abstract void clearCrossProfileIntentFilters(@UserIdInt int sourceUserId);
  
      /**
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract Drawable loadItemIcon(@NonNull PackageItemInfo itemInfo,
              @Nullable ApplicationInfo appInfo);
  
      /**
       * @hide
       */
      @NonNull
      @UnsupportedAppUsage
      public abstract Drawable loadUnbadgedItemIcon(@NonNull PackageItemInfo itemInfo,
              @Nullable ApplicationInfo appInfo);
  
      /** {@hide} */
      @UnsupportedAppUsage
      public abstract boolean isPackageAvailable(@NonNull String packageName);
  
      /** {@hide} */
      @NonNull
      @UnsupportedAppUsage
      public static String installStatusToString(int status, @Nullable String msg) {
          final String str = installStatusToString(status);
          if (msg != null) {
              return str + ": " + msg;
          } else {
              return str;
          }
      }
  
      /** {@hide} */
      @NonNull
      @UnsupportedAppUsage
      public static String installStatusToString(int status) {
          switch (status) {
              case INSTALL_SUCCEEDED: return "INSTALL_SUCCEEDED";
              case INSTALL_FAILED_ALREADY_EXISTS: return "INSTALL_FAILED_ALREADY_EXISTS";
              case INSTALL_FAILED_INVALID_APK: return "INSTALL_FAILED_INVALID_APK";
              case INSTALL_FAILED_INVALID_URI: return "INSTALL_FAILED_INVALID_URI";
              case INSTALL_FAILED_INSUFFICIENT_STORAGE: return "INSTALL_FAILED_INSUFFICIENT_STORAGE";
              case INSTALL_FAILED_DUPLICATE_PACKAGE: return "INSTALL_FAILED_DUPLICATE_PACKAGE";
              case INSTALL_FAILED_NO_SHARED_USER: return "INSTALL_FAILED_NO_SHARED_USER";
              case INSTALL_FAILED_UPDATE_INCOMPATIBLE: return "INSTALL_FAILED_UPDATE_INCOMPATIBLE";
              case INSTALL_FAILED_SHARED_USER_INCOMPATIBLE: return "INSTALL_FAILED_SHARED_USER_INCOMPATIBLE";
              case INSTALL_FAILED_MISSING_SHARED_LIBRARY: return "INSTALL_FAILED_MISSING_SHARED_LIBRARY";
              case INSTALL_FAILED_REPLACE_COULDNT_DELETE: return "INSTALL_FAILED_REPLACE_COULDNT_DELETE";
              case INSTALL_FAILED_DEXOPT: return "INSTALL_FAILED_DEXOPT";
              case INSTALL_FAILED_OLDER_SDK: return "INSTALL_FAILED_OLDER_SDK";
              case INSTALL_FAILED_CONFLICTING_PROVIDER: return "INSTALL_FAILED_CONFLICTING_PROVIDER";
              case INSTALL_FAILED_NEWER_SDK: return "INSTALL_FAILED_NEWER_SDK";
              case INSTALL_FAILED_TEST_ONLY: return "INSTALL_FAILED_TEST_ONLY";
              case INSTALL_FAILED_CPU_ABI_INCOMPATIBLE: return "INSTALL_FAILED_CPU_ABI_INCOMPATIBLE";
              case INSTALL_FAILED_MISSING_FEATURE: return "INSTALL_FAILED_MISSING_FEATURE";
              case INSTALL_FAILED_CONTAINER_ERROR: return "INSTALL_FAILED_CONTAINER_ERROR";
              case INSTALL_FAILED_INVALID_INSTALL_LOCATION: return "INSTALL_FAILED_INVALID_INSTALL_LOCATION";
              case INSTALL_FAILED_MEDIA_UNAVAILABLE: return "INSTALL_FAILED_MEDIA_UNAVAILABLE";
              case INSTALL_FAILED_VERIFICATION_TIMEOUT: return "INSTALL_FAILED_VERIFICATION_TIMEOUT";
              case INSTALL_FAILED_VERIFICATION_FAILURE: return "INSTALL_FAILED_VERIFICATION_FAILURE";
              case INSTALL_FAILED_PACKAGE_CHANGED: return "INSTALL_FAILED_PACKAGE_CHANGED";
              case INSTALL_FAILED_UID_CHANGED: return "INSTALL_FAILED_UID_CHANGED";
              case INSTALL_FAILED_VERSION_DOWNGRADE: return "INSTALL_FAILED_VERSION_DOWNGRADE";
              case INSTALL_PARSE_FAILED_NOT_APK: return "INSTALL_PARSE_FAILED_NOT_APK";
              case INSTALL_PARSE_FAILED_BAD_MANIFEST: return "INSTALL_PARSE_FAILED_BAD_MANIFEST";
              case INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION: return "INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION";
              case INSTALL_PARSE_FAILED_NO_CERTIFICATES: return "INSTALL_PARSE_FAILED_NO_CERTIFICATES";
              case INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES: return "INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES";
              case INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING: return "INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING";
              case INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME: return "INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME";
              case INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID: return "INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID";
              case INSTALL_PARSE_FAILED_MANIFEST_MALFORMED: return "INSTALL_PARSE_FAILED_MANIFEST_MALFORMED";
              case INSTALL_PARSE_FAILED_MANIFEST_EMPTY: return "INSTALL_PARSE_FAILED_MANIFEST_EMPTY";
              case INSTALL_FAILED_INTERNAL_ERROR: return "INSTALL_FAILED_INTERNAL_ERROR";
              case INSTALL_FAILED_USER_RESTRICTED: return "INSTALL_FAILED_USER_RESTRICTED";
              case INSTALL_FAILED_DUPLICATE_PERMISSION: return "INSTALL_FAILED_DUPLICATE_PERMISSION";
              case INSTALL_FAILED_NO_MATCHING_ABIS: return "INSTALL_FAILED_NO_MATCHING_ABIS";
              case INSTALL_FAILED_ABORTED: return "INSTALL_FAILED_ABORTED";
              case INSTALL_FAILED_BAD_DEX_METADATA: return "INSTALL_FAILED_BAD_DEX_METADATA";
              case INSTALL_FAILED_MISSING_SPLIT: return "INSTALL_FAILED_MISSING_SPLIT";
              case INSTALL_FAILED_BAD_SIGNATURE: return "INSTALL_FAILED_BAD_SIGNATURE";
              case INSTALL_FAILED_WRONG_INSTALLED_VERSION: return "INSTALL_FAILED_WRONG_INSTALLED_VERSION";
              default: return Integer.toString(status);
          }
      }
  
      /** {@hide} */
      public static int installStatusToPublicStatus(int status) {
          switch (status) {
              case INSTALL_SUCCEEDED: return PackageInstaller.STATUS_SUCCESS;
              case INSTALL_FAILED_ALREADY_EXISTS: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_INVALID_APK: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_INVALID_URI: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_INSUFFICIENT_STORAGE: return PackageInstaller.STATUS_FAILURE_STORAGE;
              case INSTALL_FAILED_DUPLICATE_PACKAGE: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_NO_SHARED_USER: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_UPDATE_INCOMPATIBLE: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_SHARED_USER_INCOMPATIBLE: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_MISSING_SHARED_LIBRARY: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_REPLACE_COULDNT_DELETE: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_DEXOPT: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_OLDER_SDK: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_CONFLICTING_PROVIDER: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_NEWER_SDK: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_TEST_ONLY: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_CPU_ABI_INCOMPATIBLE: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_MISSING_FEATURE: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_CONTAINER_ERROR: return PackageInstaller.STATUS_FAILURE_STORAGE;
              case INSTALL_FAILED_INVALID_INSTALL_LOCATION: return PackageInstaller.STATUS_FAILURE_STORAGE;
              case INSTALL_FAILED_MEDIA_UNAVAILABLE: return PackageInstaller.STATUS_FAILURE_STORAGE;
              case INSTALL_FAILED_VERIFICATION_TIMEOUT: return PackageInstaller.STATUS_FAILURE_ABORTED;
              case INSTALL_FAILED_VERIFICATION_FAILURE: return PackageInstaller.STATUS_FAILURE_ABORTED;
              case INSTALL_FAILED_PACKAGE_CHANGED: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_UID_CHANGED: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_VERSION_DOWNGRADE: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_PERMISSION_MODEL_DOWNGRADE: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_NOT_APK: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_BAD_MANIFEST: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_NO_CERTIFICATES: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_CERTIFICATE_ENCODING: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_BAD_PACKAGE_NAME: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_BAD_SHARED_USER_ID: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_MANIFEST_MALFORMED: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_PARSE_FAILED_MANIFEST_EMPTY: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_BAD_DEX_METADATA: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_BAD_SIGNATURE: return PackageInstaller.STATUS_FAILURE_INVALID;
              case INSTALL_FAILED_INTERNAL_ERROR: return PackageInstaller.STATUS_FAILURE;
              case INSTALL_FAILED_USER_RESTRICTED: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_DUPLICATE_PERMISSION: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              case INSTALL_FAILED_NO_MATCHING_ABIS: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              case INSTALL_FAILED_ABORTED: return PackageInstaller.STATUS_FAILURE_ABORTED;
              case INSTALL_FAILED_MISSING_SPLIT: return PackageInstaller.STATUS_FAILURE_INCOMPATIBLE;
              default: return PackageInstaller.STATUS_FAILURE;
          }
      }
  
      /** {@hide} */
      @NonNull
      public static String deleteStatusToString(int status, @Nullable String msg) {
          final String str = deleteStatusToString(status);
          if (msg != null) {
              return str + ": " + msg;
          } else {
              return str;
          }
      }
  
      /** {@hide} */
      @NonNull
      @UnsupportedAppUsage
      public static String deleteStatusToString(int status) {
          switch (status) {
              case DELETE_SUCCEEDED: return "DELETE_SUCCEEDED";
              case DELETE_FAILED_INTERNAL_ERROR: return "DELETE_FAILED_INTERNAL_ERROR";
              case DELETE_FAILED_DEVICE_POLICY_MANAGER: return "DELETE_FAILED_DEVICE_POLICY_MANAGER";
              case DELETE_FAILED_USER_RESTRICTED: return "DELETE_FAILED_USER_RESTRICTED";
              case DELETE_FAILED_OWNER_BLOCKED: return "DELETE_FAILED_OWNER_BLOCKED";
              case DELETE_FAILED_ABORTED: return "DELETE_FAILED_ABORTED";
              case DELETE_FAILED_USED_SHARED_LIBRARY: return "DELETE_FAILED_USED_SHARED_LIBRARY";
              default: return Integer.toString(status);
          }
      }
  
      /** {@hide} */
      public static int deleteStatusToPublicStatus(int status) {
          switch (status) {
              case DELETE_SUCCEEDED: return PackageInstaller.STATUS_SUCCESS;
              case DELETE_FAILED_INTERNAL_ERROR: return PackageInstaller.STATUS_FAILURE;
              case DELETE_FAILED_DEVICE_POLICY_MANAGER: return PackageInstaller.STATUS_FAILURE_BLOCKED;
              case DELETE_FAILED_USER_RESTRICTED: return PackageInstaller.STATUS_FAILURE_BLOCKED;
              case DELETE_FAILED_OWNER_BLOCKED: return PackageInstaller.STATUS_FAILURE_BLOCKED;
              case DELETE_FAILED_ABORTED: return PackageInstaller.STATUS_FAILURE_ABORTED;
              case DELETE_FAILED_USED_SHARED_LIBRARY: return PackageInstaller.STATUS_FAILURE_CONFLICT;
              default: return PackageInstaller.STATUS_FAILURE;
          }
      }
  
      /** {@hide} */
      @NonNull
      public static String permissionFlagToString(int flag) {
          switch (flag) {
              case FLAG_PERMISSION_GRANTED_BY_DEFAULT: return "GRANTED_BY_DEFAULT";
              case FLAG_PERMISSION_POLICY_FIXED: return "POLICY_FIXED";
              case FLAG_PERMISSION_SYSTEM_FIXED: return "SYSTEM_FIXED";
              case FLAG_PERMISSION_USER_SET: return "USER_SET";
              case FLAG_PERMISSION_REVOKE_ON_UPGRADE: return "REVOKE_ON_UPGRADE";
              case FLAG_PERMISSION_USER_FIXED: return "USER_FIXED";
              case FLAG_PERMISSION_REVIEW_REQUIRED: return "REVIEW_REQUIRED";
              case FLAG_PERMISSION_REVOKE_WHEN_REQUESTED: return "REVOKE_WHEN_REQUESTED";
              case FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED: return "USER_SENSITIVE_WHEN_GRANTED";
              case FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED: return "USER_SENSITIVE_WHEN_DENIED";
              case FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT: return "RESTRICTION_INSTALLER_EXEMPT";
              case FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT: return "RESTRICTION_SYSTEM_EXEMPT";
              case FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT: return "RESTRICTION_UPGRADE_EXEMPT";
              case FLAG_PERMISSION_APPLY_RESTRICTION: return "APPLY_RESTRICTION";
              case FLAG_PERMISSION_GRANTED_BY_ROLE: return "GRANTED_BY_ROLE";
              default: return Integer.toString(flag);
          }
      }
  
      /** {@hide} */
      public static class LegacyPackageDeleteObserver extends PackageDeleteObserver {
          private final IPackageDeleteObserver mLegacy;
  
          public LegacyPackageDeleteObserver(IPackageDeleteObserver legacy) {
              mLegacy = legacy;
          }
  
          @Override
          public void onPackageDeleted(String basePackageName, int returnCode, String msg) {
              if (mLegacy == null) return;
              try {
                  mLegacy.packageDeleted(basePackageName, returnCode);
              } catch (RemoteException ignored) {
              }
          }
      }
  
      /**
       * Return the install reason that was recorded when a package was first
       * installed for a specific user. Requesting the install reason for another
       * user will require the permission INTERACT_ACROSS_USERS_FULL.
       *
       * @param packageName The package for which to retrieve the install reason
       * @param user The user for whom to retrieve the install reason
       * @return The install reason. If the package is not installed for the given
       *         user, {@code INSTALL_REASON_UNKNOWN} is returned.
       * @hide
       */
      @TestApi
      @InstallReason
      public abstract int getInstallReason(@NonNull String packageName, @NonNull UserHandle user);
  
      /**
       * Checks whether the calling package is allowed to request package installs through package
       * installer. Apps are encouraged to call this API before launching the package installer via
       * intent {@link android.content.Intent#ACTION_INSTALL_PACKAGE}. Starting from Android O, the
       * user can explicitly choose what external sources they trust to install apps on the device.
       * If this API returns false, the install request will be blocked by the package installer and
       * a dialog will be shown to the user with an option to launch settings to change their
       * preference. An application must target Android O or higher and declare permission
       * {@link android.Manifest.permission#REQUEST_INSTALL_PACKAGES} in order to use this API.
       *
       * @return true if the calling package is trusted by the user to request install packages on
       * the device, false otherwise.
       * @see android.content.Intent#ACTION_INSTALL_PACKAGE
       * @see android.provider.Settings#ACTION_MANAGE_UNKNOWN_APP_SOURCES
       */
      public abstract boolean canRequestPackageInstalls();
  
      /**
       * Return the {@link ComponentName} of the activity providing Settings for the Instant App
       * resolver.
       *
       * @see {@link android.content.Intent#ACTION_INSTANT_APP_RESOLVER_SETTINGS}
       * @hide
       */
      @Nullable
      @SystemApi
      public abstract ComponentName getInstantAppResolverSettingsComponent();
  
      /**
       * Return the {@link ComponentName} of the activity responsible for installing instant
       * applications.
       *
       * @see {@link android.content.Intent#ACTION_INSTALL_INSTANT_APP_PACKAGE}
       * @hide
       */
      @Nullable
      @SystemApi
      public abstract ComponentName getInstantAppInstallerComponent();
  
      /**
       * Return the Android Id for a given Instant App.
       *
       * @see {@link android.provider.Settings.Secure#ANDROID_ID}
       * @hide
       */
      @Nullable
      public abstract String getInstantAppAndroidId(@NonNull String packageName,
              @NonNull UserHandle user);
  
      /**
       * Callback use to notify the callers of module registration that the operation
       * has finished.
       *
       * @hide
       */
      @SystemApi
      public static abstract class DexModuleRegisterCallback {
          public abstract void onDexModuleRegistered(String dexModulePath, boolean success,
                  String message);
      }
  
      /**
       * Register an application dex module with the package manager.
       * The package manager will keep track of the given module for future optimizations.
       *
       * Dex module optimizations will disable the classpath checking at runtime. The client bares
       * the responsibility to ensure that the static assumptions on classes in the optimized code
       * hold at runtime (e.g. there's no duplicate classes in the classpath).
       *
       * Note that the package manager already keeps track of dex modules loaded with
       * {@link dalvik.system.DexClassLoader} and {@link dalvik.system.PathClassLoader}.
       * This can be called for an eager registration.
       *
       * The call might take a while and the results will be posted on the main thread, using
       * the given callback.
       *
       * If the module is intended to be shared with other apps, make sure that the file
       * permissions allow for it.
       * If at registration time the permissions allow for others to read it, the module would
       * be marked as a shared module which might undergo a different optimization strategy.
       * (usually shared modules will generated larger optimizations artifacts,
       * taking more disk space).
       *
       * @param dexModulePath the absolute path of the dex module.
       * @param callback if not null, {@link DexModuleRegisterCallback#onDexModuleRegistered} will
       *                 be called once the registration finishes.
       *
       * @hide
       */
      @SystemApi
      public abstract void registerDexModule(@NonNull String dexModulePath,
              @Nullable DexModuleRegisterCallback callback);
  
      /**
       * Returns the {@link ArtManager} associated with this package manager.
       *
       * @hide
       */
      @SystemApi
      public @NonNull ArtManager getArtManager() {
          throw new UnsupportedOperationException("getArtManager not implemented in subclass");
      }
  
      /**
       * Sets or clears the harmful app warning details for the given app.
       *
       * When set, any attempt to launch an activity in this package will be intercepted and a
       * warning dialog will be shown to the user instead, with the given warning. The user
       * will have the option to proceed with the activity launch, or to uninstall the application.
       *
       * @param packageName The full name of the package to warn on.
       * @param warning A warning string to display to the user describing the threat posed by the
       *                application, or null to clear the warning.
       *
       * @hide
       */
      @RequiresPermission(Manifest.permission.SET_HARMFUL_APP_WARNINGS)
      @SystemApi
      public void setHarmfulAppWarning(@NonNull String packageName, @Nullable CharSequence warning) {
          throw new UnsupportedOperationException("setHarmfulAppWarning not implemented in subclass");
      }
  
      /**
       * Returns the harmful app warning string for the given app, or null if there is none set.
       *
       * @param packageName The full name of the desired package.
       *
       * @hide
       */
      @RequiresPermission(Manifest.permission.SET_HARMFUL_APP_WARNINGS)
      @Nullable
      @SystemApi
      public CharSequence getHarmfulAppWarning(@NonNull String packageName) {
          throw new UnsupportedOperationException("getHarmfulAppWarning not implemented in subclass");
      }
  
      /** @hide */
      @IntDef(prefix = { "CERT_INPUT_" }, value = {
              CERT_INPUT_RAW_X509,
              CERT_INPUT_SHA256
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface CertificateInputType {}
  
      /**
       * Certificate input bytes: the input bytes represent an encoded X.509 Certificate which could
       * be generated using an {@code CertificateFactory}
       */
      public static final int CERT_INPUT_RAW_X509 = 0;
  
      /**
       * Certificate input bytes: the input bytes represent the SHA256 output of an encoded X.509
       * Certificate.
       */
      public static final int CERT_INPUT_SHA256 = 1;
  
      /**
       * Searches the set of signing certificates by which the given package has proven to have been
       * signed.  This should be used instead of {@code getPackageInfo} with {@code GET_SIGNATURES}
       * since it takes into account the possibility of signing certificate rotation, except in the
       * case of packages that are signed by multiple certificates, for which signing certificate
       * rotation is not supported.  This method is analogous to using {@code getPackageInfo} with
       * {@code GET_SIGNING_CERTIFICATES} and then searching through the resulting {@code
       * signingInfo} field to see if the desired certificate is present.
       *
       * @param packageName package whose signing certificates to check
       * @param certificate signing certificate for which to search
       * @param type representation of the {@code certificate}
       * @return true if this package was or is signed by exactly the certificate {@code certificate}
       */
      public boolean hasSigningCertificate(@NonNull String packageName, @NonNull byte[] certificate,
              @CertificateInputType int type) {
          throw new UnsupportedOperationException(
                  "hasSigningCertificate not implemented in subclass");
      }
  
      /**
       * Searches the set of signing certificates by which the package(s) for the given uid has proven
       * to have been signed.  For multiple packages sharing the same uid, this will return the
       * signing certificates found in the signing history of the "newest" package, where "newest"
       * indicates the package with the newest signing certificate in the shared uid group.  This
       * method should be used instead of {@code getPackageInfo} with {@code GET_SIGNATURES}
       * since it takes into account the possibility of signing certificate rotation, except in the
       * case of packages that are signed by multiple certificates, for which signing certificate
       * rotation is not supported. This method is analogous to using {@code getPackagesForUid}
       * followed by {@code getPackageInfo} with {@code GET_SIGNING_CERTIFICATES}, selecting the
       * {@code PackageInfo} of the newest-signed bpackage , and finally searching through the
       * resulting {@code signingInfo} field to see if the desired certificate is there.
       *
       * @param uid uid whose signing certificates to check
       * @param certificate signing certificate for which to search
       * @param type representation of the {@code certificate}
       * @return true if this package was or is signed by exactly the certificate {@code certificate}
       */
      public boolean hasSigningCertificate(
              int uid, @NonNull byte[] certificate, @CertificateInputType int type) {
          throw new UnsupportedOperationException(
                  "hasSigningCertificate not implemented in subclass");
      }
  
      /**
       * @return the system defined text classifier package name, or null if there's none.
       *
       * @hide
       */
      @Nullable
      public String getSystemTextClassifierPackageName() {
          throw new UnsupportedOperationException(
                  "getSystemTextClassifierPackageName not implemented in subclass");
      }
  
      /**
       * @return  attention service package name, or null if there's none.
       *
       * @hide
       */
      public String getAttentionServicePackageName() {
          throw new UnsupportedOperationException(
                  "getAttentionServicePackageName not implemented in subclass");
      }
  
      /**
       * @return the wellbeing app package name, or null if it's not defined by the OEM.
       *
       * @hide
       */
      @Nullable
      @TestApi
      public String getWellbeingPackageName() {
          throw new UnsupportedOperationException(
                  "getWellbeingPackageName not implemented in subclass");
      }
  
      /**
       * @return the system defined app predictor package name, or null if there's none.
       *
       * @hide
       */
      @Nullable
      public String getAppPredictionServicePackageName() {
          throw new UnsupportedOperationException(
              "getAppPredictionServicePackageName not implemented in subclass");
      }
  
      /**
       * @return the system defined content capture service package name, or null if there's none.
       *
       * @hide
       */
      @Nullable
      public String getSystemCaptionsServicePackageName() {
          throw new UnsupportedOperationException(
                  "getSystemCaptionsServicePackageName not implemented in subclass");
      }
  
      /**
       * @return the incident report approver app package name, or null if it's not defined
       * by the OEM.
       *
       * @hide
       */
      @SystemApi
      @TestApi
      @Nullable
      public String getIncidentReportApproverPackageName() {
          throw new UnsupportedOperationException(
                  "getIncidentReportApproverPackageName not implemented in subclass");
      }
  
      /**
       * @return whether a given package's state is protected, e.g. package cannot be disabled,
       *         suspended, hidden or force stopped.
       *
       * @hide
       */
      public boolean isPackageStateProtected(@NonNull String packageName, @UserIdInt int userId) {
          throw new UnsupportedOperationException(
              "isPackageStateProtected not implemented in subclass");
      }
  
      /**
       * Notify to the rest of the system that a new device configuration has
       * been prepared and that it is time to refresh caches.
       *
       * @see android.content.Intent#ACTION_DEVICE_CUSTOMIZATION_READY
       *
       * @hide
       */
      @SystemApi
      public void sendDeviceCustomizationReadyBroadcast() {
          throw new UnsupportedOperationException(
              "sendDeviceCustomizationReadyBroadcast not implemented in subclass");
      }
  
  }
  