content: /*
   * Copyright (C) 2007 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.app;
  
  import android.annotation.IntDef;
  import android.annotation.RequiresPermission;
  import android.annotation.SdkConstant;
  import android.annotation.SystemApi;
  import android.annotation.SystemService;
  import android.annotation.UnsupportedAppUsage;
  import android.content.Context;
  import android.content.Intent;
  import android.os.Build;
  import android.os.Handler;
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.os.RemoteException;
  import android.os.WorkSource;
  import android.text.TextUtils;
  import android.util.ArrayMap;
  import android.util.Log;
  import android.util.proto.ProtoOutputStream;
  
  import libcore.timezone.ZoneInfoDB;
  
  import java.io.IOException;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  
  /**
   * This class provides access to the system alarm services.  These allow you
   * to schedule your application to be run at some point in the future.  When
   * an alarm goes off, the {@link Intent} that had been registered for it
   * is broadcast by the system, automatically starting the target application
   * if it is not already running.  Registered alarms are retained while the
   * device is asleep (and can optionally wake the device up if they go off
   * during that time), but will be cleared if it is turned off and rebooted.
   *
   * <p>The Alarm Manager holds a CPU wake lock as long as the alarm receiver's
   * onReceive() method is executing. This guarantees that the phone will not sleep
   * until you have finished handling the broadcast. Once onReceive() returns, the
   * Alarm Manager releases this wake lock. This means that the phone will in some
   * cases sleep as soon as your onReceive() method completes.  If your alarm receiver
   * called {@link android.content.Context#startService Context.startService()}, it
   * is possible that the phone will sleep before the requested service is launched.
   * To prevent this, your BroadcastReceiver and Service will need to implement a
   * separate wake lock policy to ensure that the phone continues running until the
   * service becomes available.
   *
   * <p><b>Note: The Alarm Manager is intended for cases where you want to have
   * your application code run at a specific time, even if your application is
   * not currently running.  For normal timing operations (ticks, timeouts,
   * etc) it is easier and much more efficient to use
   * {@link android.os.Handler}.</b>
   *
   * <p class="caution"><strong>Note:</strong> Beginning with API 19
   * ({@link android.os.Build.VERSION_CODES#KITKAT}) alarm delivery is inexact:
   * the OS will shift alarms in order to minimize wakeups and battery use.  There are
   * new APIs to support applications which need strict delivery guarantees; see
   * {@link #setWindow(int, long, long, PendingIntent)} and
   * {@link #setExact(int, long, PendingIntent)}.  Applications whose {@code targetSdkVersion}
   * is earlier than API 19 will continue to see the previous behavior in which all
   * alarms are delivered exactly when requested.
   */
  @SystemService(Context.ALARM_SERVICE)
  public class AlarmManager {
      private static final String TAG = "AlarmManager";
  
      /** @hide */
      @IntDef(prefix = { "RTC", "ELAPSED" }, value = {
              RTC_WAKEUP,
              RTC,
              ELAPSED_REALTIME_WAKEUP,
              ELAPSED_REALTIME,
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface AlarmType {}
  
      /**
       * Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
       * (wall clock time in UTC), which will wake up the device when
       * it goes off.
       */
      public static final int RTC_WAKEUP = 0;
      /**
       * Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
       * (wall clock time in UTC).  This alarm does not wake the
       * device up; if it goes off while the device is asleep, it will not be
       * delivered until the next time the device wakes up.
       */
      public static final int RTC = 1;
      /**
       * Alarm time in {@link android.os.SystemClock#elapsedRealtime
       * SystemClock.elapsedRealtime()} (time since boot, including sleep),
       * which will wake up the device when it goes off.
       */
      public static final int ELAPSED_REALTIME_WAKEUP = 2;
      /**
       * Alarm time in {@link android.os.SystemClock#elapsedRealtime
       * SystemClock.elapsedRealtime()} (time since boot, including sleep).
       * This alarm does not wake the device up; if it goes off while the device
       * is asleep, it will not be delivered until the next time the device
       * wakes up.
       */
      public static final int ELAPSED_REALTIME = 3;
  
      /**
       * Broadcast Action: Sent after the value returned by
       * {@link #getNextAlarmClock()} has changed.
       *
       * <p class="note">This is a protected intent that can only be sent by the system.
       * It is only sent to registered receivers.</p>
       */
      @SdkConstant(SdkConstant.SdkConstantType.BROADCAST_INTENT_ACTION)
      public static final String ACTION_NEXT_ALARM_CLOCK_CHANGED =
              "android.app.action.NEXT_ALARM_CLOCK_CHANGED";
  
      /** @hide */
      @UnsupportedAppUsage
      public static final long WINDOW_EXACT = 0;
      /** @hide */
      @UnsupportedAppUsage
      public static final long WINDOW_HEURISTIC = -1;
  
      /**
       * Flag for alarms: this is to be a stand-alone alarm, that should not be batched with
       * other alarms.
       * @hide
       */
      @UnsupportedAppUsage
      public static final int FLAG_STANDALONE = 1<<0;
  
      /**
       * Flag for alarms: this alarm would like to wake the device even if it is idle.  This
       * is, for example, an alarm for an alarm clock.
       * @hide
       */
      @UnsupportedAppUsage
      public static final int FLAG_WAKE_FROM_IDLE = 1<<1;
  
      /**
       * Flag for alarms: this alarm would like to still execute even if the device is
       * idle.  This won't bring the device out of idle, just allow this specific alarm to
       * run.  Note that this means the actual time this alarm goes off can be inconsistent
       * with the time of non-allow-while-idle alarms (it could go earlier than the time
       * requested by another alarm).
       *
       * @hide
       */
      public static final int FLAG_ALLOW_WHILE_IDLE = 1<<2;
  
      /**
       * Flag for alarms: same as {@link #FLAG_ALLOW_WHILE_IDLE}, but doesn't have restrictions
       * on how frequently it can be scheduled.  Only available (and automatically applied) to
       * system alarms.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public static final int FLAG_ALLOW_WHILE_IDLE_UNRESTRICTED = 1<<3;
  
      /**
       * Flag for alarms: this alarm marks the point where we would like to come out of idle
       * mode.  It may be moved by the alarm manager to match the first wake-from-idle alarm.
       * Scheduling an alarm with this flag puts the alarm manager in to idle mode, where it
       * avoids scheduling any further alarms until the marker alarm is executed.
       * @hide
       */
      @UnsupportedAppUsage
      public static final int FLAG_IDLE_UNTIL = 1<<4;
  
      @UnsupportedAppUsage
      private final IAlarmManager mService;
      private final Context mContext;
      private final String mPackageName;
      private final boolean mAlwaysExact;
      private final int mTargetSdkVersion;
      private final Handler mMainThreadHandler;
  
      /**
       * Direct-notification alarms: the requester must be running continuously from the
       * time the alarm is set to the time it is delivered, or delivery will fail.  Only
       * one-shot alarms can be set using this mechanism, not repeating alarms.
       */
      public interface OnAlarmListener {
          /**
           * Callback method that is invoked by the system when the alarm time is reached.
           */
          public void onAlarm();
      }
  
      final class ListenerWrapper extends IAlarmListener.Stub implements Runnable {
          final OnAlarmListener mListener;
          Handler mHandler;
          IAlarmCompleteListener mCompletion;
  
          public ListenerWrapper(OnAlarmListener listener) {
              mListener = listener;
          }
  
          public void setHandler(Handler h) {
             mHandler = h;
          }
  
          public void cancel() {
              try {
                  mService.remove(null, this);
              } catch (RemoteException ex) {
                  throw ex.rethrowFromSystemServer();
              }
  
              synchronized (AlarmManager.class) {
                  if (sWrappers != null) {
                      sWrappers.remove(mListener);
                  }
              }
          }
  
          @Override
          public void doAlarm(IAlarmCompleteListener alarmManager) {
              mCompletion = alarmManager;
  
              // Remove this listener from the wrapper cache first; the server side
              // already considers it gone
              synchronized (AlarmManager.class) {
                  if (sWrappers != null) {
                      sWrappers.remove(mListener);
                  }
              }
  
              mHandler.post(this);
          }
  
          @Override
          public void run() {
              // Now deliver it to the app
              try {
                  mListener.onAlarm();
              } finally {
                  // No catch -- make sure to report completion to the system process,
                  // but continue to allow the exception to crash the app.
  
                  try {
                      mCompletion.alarmComplete(this);
                  } catch (Exception e) {
                      Log.e(TAG, "Unable to report completion to Alarm Manager!", e);
                  }
              }
          }
      }
  
      // Tracking of the OnAlarmListener -> wrapper mapping, for cancel() support.
      // Access is synchronized on the AlarmManager class object.
      private static ArrayMap<OnAlarmListener, ListenerWrapper> sWrappers;
  
      /**
       * package private on purpose
       */
      AlarmManager(IAlarmManager service, Context ctx) {
          mService = service;
  
          mContext = ctx;
          mPackageName = ctx.getPackageName();
          mTargetSdkVersion = ctx.getApplicationInfo().targetSdkVersion;
          mAlwaysExact = (mTargetSdkVersion < Build.VERSION_CODES.KITKAT);
          mMainThreadHandler = new Handler(ctx.getMainLooper());
      }
  
      private long legacyExactLength() {
          return (mAlwaysExact ? WINDOW_EXACT : WINDOW_HEURISTIC);
      }
  
      /**
       * <p>Schedule an alarm.  <b>Note: for timing operations (ticks, timeouts,
       * etc) it is easier and much more efficient to use {@link android.os.Handler}.</b>
       * If there is already an alarm scheduled for the same IntentSender, that previous
       * alarm will first be canceled.
       *
       * <p>If the stated trigger time is in the past, the alarm will be triggered
       * immediately.  If there is already an alarm for this Intent
       * scheduled (with the equality of two intents being defined by
       * {@link Intent#filterEquals}), then it will be removed and replaced by
       * this one.
       *
       * <p>
       * The alarm is an Intent broadcast that goes to a broadcast receiver that
       * you registered with {@link android.content.Context#registerReceiver}
       * or through the &lt;receiver&gt; tag in an AndroidManifest.xml file.
       *
       * <p>
       * Alarm intents are delivered with a data extra of type int called
       * {@link Intent#EXTRA_ALARM_COUNT Intent.EXTRA_ALARM_COUNT} that indicates
       * how many past alarm events have been accumulated into this intent
       * broadcast.  Recurring alarms that have gone undelivered because the
       * phone was asleep may have a count greater than one when delivered.
       *
       * <div class="note">
       * <p>
       * <b>Note:</b> Beginning in API 19, the trigger time passed to this method
       * is treated as inexact: the alarm will not be delivered before this time, but
       * may be deferred and delivered some time later.  The OS will use
       * this policy in order to "batch" alarms together across the entire system,
       * minimizing the number of times the device needs to "wake up" and minimizing
       * battery use.  In general, alarms scheduled in the near future will not
       * be deferred as long as alarms scheduled far in the future.
       *
       * <p>
       * With the new batching policy, delivery ordering guarantees are not as
       * strong as they were previously.  If the application sets multiple alarms,
       * it is possible that these alarms' <em>actual</em> delivery ordering may not match
       * the order of their <em>requested</em> delivery times.  If your application has
       * strong ordering requirements there are other APIs that you can use to get
       * the necessary behavior; see {@link #setWindow(int, long, long, PendingIntent)}
       * and {@link #setExact(int, long, PendingIntent)}.
       *
       * <p>
       * Applications whose {@code targetSdkVersion} is before API 19 will
       * continue to get the previous alarm behavior: all of their scheduled alarms
       * will be treated as exact.
       * </div>
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should go
       * off, using the appropriate clock (depending on the alarm type).
       * @param operation Action to perform when the alarm goes off;
       * typically comes from {@link PendingIntent#getBroadcast
       * IntentSender.getBroadcast()}.
       *
       * @see android.os.Handler
       * @see #setExact
       * @see #setRepeating
       * @see #setWindow
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void set(@AlarmType int type, long triggerAtMillis, PendingIntent operation) {
          setImpl(type, triggerAtMillis, legacyExactLength(), 0, 0, operation, null, null,
                  null, null, null);
      }
  
      /**
       * Direct callback version of {@link #set(int, long, PendingIntent)}.  Rather than
       * supplying a PendingIntent to be sent when the alarm time is reached, this variant
       * supplies an {@link OnAlarmListener} instance that will be invoked at that time.
       * <p>
       * The OnAlarmListener's {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       * invoked via the specified target Handler, or on the application's main looper
       * if {@code null} is passed as the {@code targetHandler} parameter.
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should go
       *         off, using the appropriate clock (depending on the alarm type).
       * @param tag string describing the alarm, used for logging and battery-use
       *         attribution
       * @param listener {@link OnAlarmListener} instance whose
       *         {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       *         called when the alarm time is reached.  A given OnAlarmListener instance can
       *         only be the target of a single pending alarm, just as a given PendingIntent
       *         can only be used with one alarm at a time.
       * @param targetHandler {@link Handler} on which to execute the listener's onAlarm()
       *         callback, or {@code null} to run that callback on the main looper.
       */
      public void set(@AlarmType int type, long triggerAtMillis, String tag, OnAlarmListener listener,
              Handler targetHandler) {
          setImpl(type, triggerAtMillis, legacyExactLength(), 0, 0, null, listener, tag,
                  targetHandler, null, null);
      }
  
      /**
       * Schedule a repeating alarm.  <b>Note: for timing operations (ticks,
       * timeouts, etc) it is easier and much more efficient to use
       * {@link android.os.Handler}.</b>  If there is already an alarm scheduled
       * for the same IntentSender, it will first be canceled.
       *
       * <p>Like {@link #set}, except you can also supply a period at which
       * the alarm will automatically repeat.  This alarm continues
       * repeating until explicitly removed with {@link #cancel}.  If the stated
       * trigger time is in the past, the alarm will be triggered immediately, with an
       * alarm count depending on how far in the past the trigger time is relative
       * to the repeat interval.
       *
       * <p>If an alarm is delayed (by system sleep, for example, for non
       * _WAKEUP alarm types), a skipped repeat will be delivered as soon as
       * possible.  After that, future alarms will be delivered according to the
       * original schedule; they do not drift over time.  For example, if you have
       * set a recurring alarm for the top of every hour but the phone was asleep
       * from 7:45 until 8:45, an alarm will be sent as soon as the phone awakens,
       * then the next alarm will be sent at 9:00.
       *
       * <p>If your application wants to allow the delivery times to drift in
       * order to guarantee that at least a certain time interval always elapses
       * between alarms, then the approach to take is to use one-time alarms,
       * scheduling the next one yourself when handling each alarm delivery.
       *
       * <p class="note">
       * <b>Note:</b> as of API 19, all repeating alarms are inexact.  If your
       * application needs precise delivery times then it must use one-time
       * exact alarms, rescheduling each time as described above. Legacy applications
       * whose {@code targetSdkVersion} is earlier than API 19 will continue to have all
       * of their alarms, including repeating alarms, treated as exact.
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should first
       * go off, using the appropriate clock (depending on the alarm type).
       * @param intervalMillis interval in milliseconds between subsequent repeats
       * of the alarm.
       * @param operation Action to perform when the alarm goes off;
       * typically comes from {@link PendingIntent#getBroadcast
       * IntentSender.getBroadcast()}.
       *
       * @see android.os.Handler
       * @see #set
       * @see #setExact
       * @see #setWindow
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void setRepeating(@AlarmType int type, long triggerAtMillis,
              long intervalMillis, PendingIntent operation) {
          setImpl(type, triggerAtMillis, legacyExactLength(), intervalMillis, 0, operation,
                  null, null, null, null, null);
      }
  
      /**
       * Schedule an alarm to be delivered within a given window of time.  This method
       * is similar to {@link #set(int, long, PendingIntent)}, but allows the
       * application to precisely control the degree to which its delivery might be
       * adjusted by the OS. This method allows an application to take advantage of the
       * battery optimizations that arise from delivery batching even when it has
       * modest timeliness requirements for its alarms.
       *
       * <p>
       * This method can also be used to achieve strict ordering guarantees among
       * multiple alarms by ensuring that the windows requested for each alarm do
       * not intersect.
       *
       * <p>
       * When precise delivery is not required, applications should use the standard
       * {@link #set(int, long, PendingIntent)} method.  This will give the OS the most
       * flexibility to minimize wakeups and battery use.  For alarms that must be delivered
       * at precisely-specified times with no acceptable variation, applications can use
       * {@link #setExact(int, long, PendingIntent)}.
       *
       * @param type type of alarm.
       * @param windowStartMillis The earliest time, in milliseconds, that the alarm should
       *        be delivered, expressed in the appropriate clock's units (depending on the alarm
       *        type).
       * @param windowLengthMillis The length of the requested delivery window,
       *        in milliseconds.  The alarm will be delivered no later than this many
       *        milliseconds after {@code windowStartMillis}.  Note that this parameter
       *        is a <i>duration,</i> not the timestamp of the end of the window.
       * @param operation Action to perform when the alarm goes off;
       *        typically comes from {@link PendingIntent#getBroadcast
       *        IntentSender.getBroadcast()}.
       *
       * @see #set
       * @see #setExact
       * @see #setRepeating
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void setWindow(@AlarmType int type, long windowStartMillis, long windowLengthMillis,
              PendingIntent operation) {
          setImpl(type, windowStartMillis, windowLengthMillis, 0, 0, operation,
                  null, null, null, null, null);
      }
  
      /**
       * Direct callback version of {@link #setWindow(int, long, long, PendingIntent)}.  Rather
       * than supplying a PendingIntent to be sent when the alarm time is reached, this variant
       * supplies an {@link OnAlarmListener} instance that will be invoked at that time.
       * <p>
       * The OnAlarmListener {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       * invoked via the specified target Handler, or on the application's main looper
       * if {@code null} is passed as the {@code targetHandler} parameter.
       */
      public void setWindow(@AlarmType int type, long windowStartMillis, long windowLengthMillis,
              String tag, OnAlarmListener listener, Handler targetHandler) {
          setImpl(type, windowStartMillis, windowLengthMillis, 0, 0, null, listener, tag,
                  targetHandler, null, null);
      }
  
      /**
       * Schedule an alarm to be delivered precisely at the stated time.
       *
       * <p>
       * This method is like {@link #set(int, long, PendingIntent)}, but does not permit
       * the OS to adjust the delivery time.  The alarm will be delivered as nearly as
       * possible to the requested trigger time.
       *
       * <p>
       * <b>Note:</b> only alarms for which there is a strong demand for exact-time
       * delivery (such as an alarm clock ringing at the requested time) should be
       * scheduled as exact.  Applications are strongly discouraged from using exact
       * alarms unnecessarily as they reduce the OS's ability to minimize battery use.
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should go
       *        off, using the appropriate clock (depending on the alarm type).
       * @param operation Action to perform when the alarm goes off;
       *        typically comes from {@link PendingIntent#getBroadcast
       *        IntentSender.getBroadcast()}.
       *
       * @see #set
       * @see #setRepeating
       * @see #setWindow
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void setExact(@AlarmType int type, long triggerAtMillis, PendingIntent operation) {
          setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, 0, operation, null, null, null,
                  null, null);
      }
  
      /**
       * Direct callback version of {@link #setExact(int, long, PendingIntent)}.  Rather
       * than supplying a PendingIntent to be sent when the alarm time is reached, this variant
       * supplies an {@link OnAlarmListener} instance that will be invoked at that time.
       * <p>
       * The OnAlarmListener's {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       * invoked via the specified target Handler, or on the application's main looper
       * if {@code null} is passed as the {@code targetHandler} parameter.
       */
      public void setExact(@AlarmType int type, long triggerAtMillis, String tag,
              OnAlarmListener listener, Handler targetHandler) {
          setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, 0, null, listener, tag,
                  targetHandler, null, null);
      }
  
      /**
       * Schedule an idle-until alarm, which will keep the alarm manager idle until
       * the given time.
       * @hide
       */
      public void setIdleUntil(@AlarmType int type, long triggerAtMillis, String tag,
              OnAlarmListener listener, Handler targetHandler) {
          setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, FLAG_IDLE_UNTIL, null,
                  listener, tag, targetHandler, null, null);
      }
  
      /**
       * Schedule an alarm that represents an alarm clock, which will be used to notify the user
       * when it goes off.  The expectation is that when this alarm triggers, the application will
       * further wake up the device to tell the user about the alarm -- turning on the screen,
       * playing a sound, vibrating, etc.  As such, the system will typically also use the
       * information supplied here to tell the user about this upcoming alarm if appropriate.
       *
       * <p>Due to the nature of this kind of alarm, similar to {@link #setExactAndAllowWhileIdle},
       * these alarms will be allowed to trigger even if the system is in a low-power idle
       * (a.k.a. doze) mode.  The system may also do some prep-work when it sees that such an
       * alarm coming up, to reduce the amount of background work that could happen if this
       * causes the device to fully wake up -- this is to avoid situations such as a large number
       * of devices having an alarm set at the same time in the morning, all waking up at that
       * time and suddenly swamping the network with pending background work.  As such, these
       * types of alarms can be extremely expensive on battery use and should only be used for
       * their intended purpose.</p>
       *
       * <p>
       * This method is like {@link #setExact(int, long, PendingIntent)}, but implies
       * {@link #RTC_WAKEUP}.
       *
       * @param info
       * @param operation Action to perform when the alarm goes off;
       *        typically comes from {@link PendingIntent#getBroadcast
       *        IntentSender.getBroadcast()}.
       *
       * @see #set
       * @see #setRepeating
       * @see #setWindow
       * @see #setExact
       * @see #cancel
       * @see #getNextAlarmClock()
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       */
      public void setAlarmClock(AlarmClockInfo info, PendingIntent operation) {
          setImpl(RTC_WAKEUP, info.getTriggerTime(), WINDOW_EXACT, 0, 0, operation,
                  null, null, null, null, info);
      }
  
      /** @hide */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.UPDATE_DEVICE_STATS)
      public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
              long intervalMillis, PendingIntent operation, WorkSource workSource) {
          setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, operation, null, null,
                  null, workSource, null);
      }
  
      /**
       * Direct callback version of {@link #set(int, long, long, long, PendingIntent, WorkSource)}.
       * Note that repeating alarms must use the PendingIntent variant, not an OnAlarmListener.
       * <p>
       * The OnAlarmListener's {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       * invoked via the specified target Handler, or on the application's main looper
       * if {@code null} is passed as the {@code targetHandler} parameter.
       *
       * @hide
       */
      @UnsupportedAppUsage
      public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
              long intervalMillis, String tag, OnAlarmListener listener, Handler targetHandler,
              WorkSource workSource) {
          setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, null, listener, tag,
                  targetHandler, workSource, null);
      }
  
      /**
       * Direct callback version of {@link #set(int, long, long, long, PendingIntent, WorkSource)}.
       * Note that repeating alarms must use the PendingIntent variant, not an OnAlarmListener.
       * <p>
       * The OnAlarmListener's {@link OnAlarmListener#onAlarm() onAlarm()} method will be
       * invoked via the specified target Handler, or on the application's main looper
       * if {@code null} is passed as the {@code targetHandler} parameter.
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.UPDATE_DEVICE_STATS)
      public void set(@AlarmType int type, long triggerAtMillis, long windowMillis,
              long intervalMillis, OnAlarmListener listener, Handler targetHandler,
              WorkSource workSource) {
          setImpl(type, triggerAtMillis, windowMillis, intervalMillis, 0, null, listener, null,
                  targetHandler, workSource, null);
      }
  
      private void setImpl(@AlarmType int type, long triggerAtMillis, long windowMillis,
              long intervalMillis, int flags, PendingIntent operation, final OnAlarmListener listener,
              String listenerTag, Handler targetHandler, WorkSource workSource,
              AlarmClockInfo alarmClock) {
          if (triggerAtMillis < 0) {
              /* NOTYET
              if (mAlwaysExact) {
                  // Fatal error for KLP+ apps to use negative trigger times
                  throw new IllegalArgumentException("Invalid alarm trigger time "
                          + triggerAtMillis);
              }
              */
              triggerAtMillis = 0;
          }
  
          ListenerWrapper recipientWrapper = null;
          if (listener != null) {
              synchronized (AlarmManager.class) {
                  if (sWrappers == null) {
                      sWrappers = new ArrayMap<OnAlarmListener, ListenerWrapper>();
                  }
  
                  recipientWrapper = sWrappers.get(listener);
                  // no existing wrapper => build a new one
                  if (recipientWrapper == null) {
                      recipientWrapper = new ListenerWrapper(listener);
                      sWrappers.put(listener, recipientWrapper);
                  }
              }
  
              final Handler handler = (targetHandler != null) ? targetHandler : mMainThreadHandler;
              recipientWrapper.setHandler(handler);
          }
  
          try {
              mService.set(mPackageName, type, triggerAtMillis, windowMillis, intervalMillis, flags,
                      operation, recipientWrapper, listenerTag, workSource, alarmClock);
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /**
       * Available inexact recurrence interval recognized by
       * {@link #setInexactRepeating(int, long, long, PendingIntent)}
       * when running on Android prior to API 19.
       */
      public static final long INTERVAL_FIFTEEN_MINUTES = 15 * 60 * 1000;
  
      /**
       * Available inexact recurrence interval recognized by
       * {@link #setInexactRepeating(int, long, long, PendingIntent)}
       * when running on Android prior to API 19.
       */
      public static final long INTERVAL_HALF_HOUR = 2*INTERVAL_FIFTEEN_MINUTES;
  
      /**
       * Available inexact recurrence interval recognized by
       * {@link #setInexactRepeating(int, long, long, PendingIntent)}
       * when running on Android prior to API 19.
       */
      public static final long INTERVAL_HOUR = 2*INTERVAL_HALF_HOUR;
  
      /**
       * Available inexact recurrence interval recognized by
       * {@link #setInexactRepeating(int, long, long, PendingIntent)}
       * when running on Android prior to API 19.
       */
      public static final long INTERVAL_HALF_DAY = 12*INTERVAL_HOUR;
  
      /**
       * Available inexact recurrence interval recognized by
       * {@link #setInexactRepeating(int, long, long, PendingIntent)}
       * when running on Android prior to API 19.
       */
      public static final long INTERVAL_DAY = 2*INTERVAL_HALF_DAY;
  
      /**
       * Schedule a repeating alarm that has inexact trigger time requirements;
       * for example, an alarm that repeats every hour, but not necessarily at
       * the top of every hour.  These alarms are more power-efficient than
       * the strict recurrences traditionally supplied by {@link #setRepeating}, since the
       * system can adjust alarms' delivery times to cause them to fire simultaneously,
       * avoiding waking the device from sleep more than necessary.
       *
       * <p>Your alarm's first trigger will not be before the requested time,
       * but it might not occur for almost a full interval after that time.  In
       * addition, while the overall period of the repeating alarm will be as
       * requested, the time between any two successive firings of the alarm
       * may vary.  If your application demands very low jitter, use
       * one-shot alarms with an appropriate window instead; see {@link
       * #setWindow(int, long, long, PendingIntent)} and
       * {@link #setExact(int, long, PendingIntent)}.
       *
       * <p class="note">
       * As of API 19, all repeating alarms are inexact.  Because this method has
       * been available since API 3, your application can safely call it and be
       * assured that it will get similar behavior on both current and older versions
       * of Android.
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should first
       * go off, using the appropriate clock (depending on the alarm type).  This
       * is inexact: the alarm will not fire before this time, but there may be a
       * delay of almost an entire alarm interval before the first invocation of
       * the alarm.
       * @param intervalMillis interval in milliseconds between subsequent repeats
       * of the alarm.  Prior to API 19, if this is one of INTERVAL_FIFTEEN_MINUTES,
       * INTERVAL_HALF_HOUR, INTERVAL_HOUR, INTERVAL_HALF_DAY, or INTERVAL_DAY
       * then the alarm will be phase-aligned with other alarms to reduce the
       * number of wakeups.  Otherwise, the alarm will be set as though the
       * application had called {@link #setRepeating}.  As of API 19, all repeating
       * alarms will be inexact and subject to batching with other alarms regardless
       * of their stated repeat interval.
       * @param operation Action to perform when the alarm goes off;
       * typically comes from {@link PendingIntent#getBroadcast
       * IntentSender.getBroadcast()}.
       *
       * @see android.os.Handler
       * @see #set
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       * @see #INTERVAL_FIFTEEN_MINUTES
       * @see #INTERVAL_HALF_HOUR
       * @see #INTERVAL_HOUR
       * @see #INTERVAL_HALF_DAY
       * @see #INTERVAL_DAY
       */
      public void setInexactRepeating(@AlarmType int type, long triggerAtMillis,
              long intervalMillis, PendingIntent operation) {
          setImpl(type, triggerAtMillis, WINDOW_HEURISTIC, intervalMillis, 0, operation, null,
                  null, null, null, null);
      }
  
      /**
       * Like {@link #set(int, long, PendingIntent)}, but this alarm will be allowed to execute
       * even when the system is in low-power idle (a.k.a. doze) modes.  This type of alarm must
       * <b>only</b> be used for situations where it is actually required that the alarm go off while
       * in idle -- a reasonable example would be for a calendar notification that should make a
       * sound so the user is aware of it.  When the alarm is dispatched, the app will also be
       * added to the system's temporary whitelist for approximately 10 seconds to allow that
       * application to acquire further wake locks in which to complete its work.</p>
       *
       * <p>These alarms can significantly impact the power use
       * of the device when idle (and thus cause significant battery blame to the app scheduling
       * them), so they should be used with care.  To reduce abuse, there are restrictions on how
       * frequently these alarms will go off for a particular application.
       * Under normal system operation, it will not dispatch these
       * alarms more than about every minute (at which point every such pending alarm is
       * dispatched); when in low-power idle modes this duration may be significantly longer,
       * such as 15 minutes.</p>
       *
       * <p>Unlike other alarms, the system is free to reschedule this type of alarm to happen
       * out of order with any other alarms, even those from the same app.  This will clearly happen
       * when the device is idle (since this alarm can go off while idle, when any other alarms
       * from the app will be held until later), but may also happen even when not idle.</p>
       *
       * <p>Regardless of the app's target SDK version, this call always allows batching of the
       * alarm.</p>
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should go
       * off, using the appropriate clock (depending on the alarm type).
       * @param operation Action to perform when the alarm goes off;
       * typically comes from {@link PendingIntent#getBroadcast
       * IntentSender.getBroadcast()}.
       *
       * @see #set(int, long, PendingIntent)
       * @see #setExactAndAllowWhileIdle
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void setAndAllowWhileIdle(@AlarmType int type, long triggerAtMillis,
              PendingIntent operation) {
          setImpl(type, triggerAtMillis, WINDOW_HEURISTIC, 0, FLAG_ALLOW_WHILE_IDLE,
                  operation, null, null, null, null, null);
      }
  
      /**
       * Like {@link #setExact(int, long, PendingIntent)}, but this alarm will be allowed to execute
       * even when the system is in low-power idle modes.  If you don't need exact scheduling of
       * the alarm but still need to execute while idle, consider using
       * {@link #setAndAllowWhileIdle}.  This type of alarm must <b>only</b>
       * be used for situations where it is actually required that the alarm go off while in
       * idle -- a reasonable example would be for a calendar notification that should make a
       * sound so the user is aware of it.  When the alarm is dispatched, the app will also be
       * added to the system's temporary whitelist for approximately 10 seconds to allow that
       * application to acquire further wake locks in which to complete its work.</p>
       *
       * <p>These alarms can significantly impact the power use
       * of the device when idle (and thus cause significant battery blame to the app scheduling
       * them), so they should be used with care.  To reduce abuse, there are restrictions on how
       * frequently these alarms will go off for a particular application.
       * Under normal system operation, it will not dispatch these
       * alarms more than about every minute (at which point every such pending alarm is
       * dispatched); when in low-power idle modes this duration may be significantly longer,
       * such as 15 minutes.</p>
       *
       * <p>Unlike other alarms, the system is free to reschedule this type of alarm to happen
       * out of order with any other alarms, even those from the same app.  This will clearly happen
       * when the device is idle (since this alarm can go off while idle, when any other alarms
       * from the app will be held until later), but may also happen even when not idle.
       * Note that the OS will allow itself more flexibility for scheduling these alarms than
       * regular exact alarms, since the application has opted into this behavior.  When the
       * device is idle it may take even more liberties with scheduling in order to optimize
       * for battery life.</p>
       *
       * @param type type of alarm.
       * @param triggerAtMillis time in milliseconds that the alarm should go
       *        off, using the appropriate clock (depending on the alarm type).
       * @param operation Action to perform when the alarm goes off;
       *        typically comes from {@link PendingIntent#getBroadcast
       *        IntentSender.getBroadcast()}.
       *
       * @see #set
       * @see #setRepeating
       * @see #setWindow
       * @see #cancel
       * @see android.content.Context#sendBroadcast
       * @see android.content.Context#registerReceiver
       * @see android.content.Intent#filterEquals
       * @see #ELAPSED_REALTIME
       * @see #ELAPSED_REALTIME_WAKEUP
       * @see #RTC
       * @see #RTC_WAKEUP
       */
      public void setExactAndAllowWhileIdle(@AlarmType int type, long triggerAtMillis,
              PendingIntent operation) {
          setImpl(type, triggerAtMillis, WINDOW_EXACT, 0, FLAG_ALLOW_WHILE_IDLE, operation,
                  null, null, null, null, null);
      }
  
      /**
       * Remove any alarms with a matching {@link Intent}.
       * Any alarm, of any type, whose Intent matches this one (as defined by
       * {@link Intent#filterEquals}), will be canceled.
       *
       * @param operation IntentSender which matches a previously added
       * IntentSender. This parameter must not be {@code null}.
       *
       * @see #set
       */
      public void cancel(PendingIntent operation) {
          if (operation == null) {
              final String msg = "cancel() called with a null PendingIntent";
              if (mTargetSdkVersion >= Build.VERSION_CODES.N) {
                  throw new NullPointerException(msg);
              } else {
                  Log.e(TAG, msg);
                  return;
              }
          }
  
          try {
              mService.remove(operation, null);
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /**
       * Remove any alarm scheduled to be delivered to the given {@link OnAlarmListener}.
       *
       * @param listener OnAlarmListener instance that is the target of a currently-set alarm.
       */
      public void cancel(OnAlarmListener listener) {
          if (listener == null) {
              throw new NullPointerException("cancel() called with a null OnAlarmListener");
          }
  
          ListenerWrapper wrapper = null;
          synchronized (AlarmManager.class) {
              if (sWrappers != null) {
                  wrapper = sWrappers.get(listener);
              }
          }
  
          if (wrapper == null) {
              Log.w(TAG, "Unrecognized alarm listener " + listener);
              return;
          }
  
          wrapper.cancel();
      }
  
      /**
       * Set the system wall clock time.
       * Requires the permission android.permission.SET_TIME.
       *
       * @param millis time in milliseconds since the Epoch
       */
      @RequiresPermission(android.Manifest.permission.SET_TIME)
      public void setTime(long millis) {
          try {
              mService.setTime(millis);
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /**
       * Sets the system's persistent default time zone. This is the time zone for all apps, even
       * after a reboot. Use {@link java.util.TimeZone#setDefault} if you just want to change the
       * time zone within your app, and even then prefer to pass an explicit
       * {@link java.util.TimeZone} to APIs that require it rather than changing the time zone for
       * all threads.
       *
       * <p> On android M and above, it is an error to pass in a non-Olson timezone to this
       * function. Note that this is a bad idea on all Android releases because POSIX and
       * the {@code TimeZone} class have opposite interpretations of {@code '+'} and {@code '-'}
       * in the same non-Olson ID.
       *
       * @param timeZone one of the Olson ids from the list returned by
       *     {@link java.util.TimeZone#getAvailableIDs}
       */
      @RequiresPermission(android.Manifest.permission.SET_TIME_ZONE)
      public void setTimeZone(String timeZone) {
          if (TextUtils.isEmpty(timeZone)) {
              return;
          }
  
          // Reject this timezone if it isn't an Olson zone we recognize.
          if (mTargetSdkVersion >= Build.VERSION_CODES.M) {
              boolean hasTimeZone = false;
              try {
                  hasTimeZone = ZoneInfoDB.getInstance().hasTimeZone(timeZone);
              } catch (IOException ignored) {
              }
  
              if (!hasTimeZone) {
                  throw new IllegalArgumentException("Timezone: " + timeZone + " is not an Olson ID");
              }
          }
  
          try {
              mService.setTimeZone(timeZone);
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /** @hide */
      public long getNextWakeFromIdleTime() {
          try {
              return mService.getNextWakeFromIdleTime();
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /**
       * Gets information about the next alarm clock currently scheduled.
       *
       * The alarm clocks considered are those scheduled by any application
       * using the {@link #setAlarmClock} method.
       *
       * @return An {@link AlarmClockInfo} object describing the next upcoming alarm
       *   clock event that will occur.  If there are no alarm clock events currently
       *   scheduled, this method will return {@code null}.
       *
       * @see #setAlarmClock
       * @see AlarmClockInfo
       * @see #ACTION_NEXT_ALARM_CLOCK_CHANGED
       */
      public AlarmClockInfo getNextAlarmClock() {
          return getNextAlarmClock(mContext.getUserId());
      }
  
      /**
       * Gets information about the next alarm clock currently scheduled.
       *
       * The alarm clocks considered are those scheduled by any application
       * using the {@link #setAlarmClock} method within the given user.
       *
       * @return An {@link AlarmClockInfo} object describing the next upcoming alarm
       *   clock event that will occur within the given user.  If there are no alarm clock
       *   events currently scheduled in that user, this method will return {@code null}.
       *
       * @see #setAlarmClock
       * @see AlarmClockInfo
       * @see #ACTION_NEXT_ALARM_CLOCK_CHANGED
       *
       * @hide
       */
      public AlarmClockInfo getNextAlarmClock(int userId) {
          try {
              return mService.getNextAlarmClock(userId);
          } catch (RemoteException ex) {
              throw ex.rethrowFromSystemServer();
          }
      }
  
      /**
       * An immutable description of a scheduled "alarm clock" event.
       *
       * @see AlarmManager#setAlarmClock
       * @see AlarmManager#getNextAlarmClock
       */
      public static final class AlarmClockInfo implements Parcelable {
  
          private final long mTriggerTime;
          private final PendingIntent mShowIntent;
  
          /**
           * Creates a new alarm clock description.
           *
           * @param triggerTime time at which the underlying alarm is triggered in wall time
           *                    milliseconds since the epoch
           * @param showIntent an intent that can be used to show or edit details of
           *                        the alarm clock.
           */
          public AlarmClockInfo(long triggerTime, PendingIntent showIntent) {
              mTriggerTime = triggerTime;
              mShowIntent = showIntent;
          }
  
          /**
           * Use the {@link #CREATOR}
           * @hide
           */
          AlarmClockInfo(Parcel in) {
              mTriggerTime = in.readLong();
              mShowIntent = in.readParcelable(PendingIntent.class.getClassLoader());
          }
  
          /**
           * Returns the time at which the alarm is going to trigger.
           *
           * This value is UTC wall clock time in milliseconds, as returned by
           * {@link System#currentTimeMillis()} for example.
           */
          public long getTriggerTime() {
              return mTriggerTime;
          }
  
          /**
           * Returns an intent that can be used to show or edit details of the alarm clock in
           * the application that scheduled it.
           *
           * <p class="note">Beware that any application can retrieve and send this intent,
           * potentially with additional fields filled in. See
           * {@link PendingIntent#send(android.content.Context, int, android.content.Intent)
           * PendingIntent.send()} and {@link android.content.Intent#fillIn Intent.fillIn()}
           * for details.
           */
          public PendingIntent getShowIntent() {
              return mShowIntent;
          }
  
          @Override
          public int describeContents() {
              return 0;
          }
  
          @Override
          public void writeToParcel(Parcel dest, int flags) {
              dest.writeLong(mTriggerTime);
              dest.writeParcelable(mShowIntent, flags);
          }
  
          public static final @android.annotation.NonNull Creator<AlarmClockInfo> CREATOR = new Creator<AlarmClockInfo>() {
              @Override
              public AlarmClockInfo createFromParcel(Parcel in) {
                  return new AlarmClockInfo(in);
              }
  
              @Override
              public AlarmClockInfo[] newArray(int size) {
                  return new AlarmClockInfo[size];
              }
          };
  
          /** @hide */
          public void writeToProto(ProtoOutputStream proto, long fieldId) {
              final long token = proto.start(fieldId);
              proto.write(AlarmClockInfoProto.TRIGGER_TIME_MS, mTriggerTime);
              if (mShowIntent != null) {
                  mShowIntent.writeToProto(proto, AlarmClockInfoProto.SHOW_INTENT);
              }
              proto.end(token);
          }
      }
  }
  