content: /*
   * Copyright (C) 2017 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.admin;
  
  import android.app.Service;
  import android.content.ComponentName;
  import android.content.Intent;
  import android.os.IBinder;
  
  /**
   * Base class for a service that device owner/profile owners can optionally have.
   *
   * <p>The system searches for it with an intent filter with the
   * {@link DevicePolicyManager#ACTION_DEVICE_ADMIN_SERVICE} action, and tries to keep a bound
   * connection as long as the hosting user is running, so that the device/profile owner is always
   * considered to be in the foreground.  This is useful to receive implicit broadcasts that
   * can no longer be received by manifest receivers by apps targeting Android version
   * {@link android.os.Build.VERSION_CODES#O}.  Device/profile owners can use a runtime-registered
   * broadcast receiver instead, and have a {@link DeviceAdminService} so that the process is always
   * running.
   *
   * <p>Device/profile owners can use
   * {@link android.content.pm.PackageManager#setComponentEnabledSetting(ComponentName, int, int)}
   * to disable/enable its own service.  For example, when a device/profile owner no longer needs
   * to be in the foreground, it can (and should) disable its service.
   *
   * <p>The service must be protected with the permission
   * {@link android.Manifest.permission#BIND_DEVICE_ADMIN}.  Otherwise the system would ignore it.
   *
   * <p>When the owner process crashes, the service will be re-bound automatically after a
   * back-off.
   *
   * <p>Note the process may still be killed if the system is under heavy memory pressure, in which
   * case the process will be re-started later.
   */
  public class DeviceAdminService extends Service {
      private final IDeviceAdminServiceImpl mImpl;
  
      public DeviceAdminService() {
          mImpl = new IDeviceAdminServiceImpl();
      }
  
      @Override
      public final IBinder onBind(Intent intent) {
          return mImpl.asBinder();
      }
  
      private class IDeviceAdminServiceImpl extends IDeviceAdminService.Stub {
      }
  
      // So far, we have no methods in this class.
  }
  