content: /*
   * Copyright (C) 2011 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 com.kure.musicplayer.external;
  
  import java.lang.reflect.Method;
  
  import android.media.AudioManager;
  import android.util.Log;
  
  
  
  
  
  
  
  //NOTE (READ THIS PLEASE):
  //
  //This file was directly copied from the Android
  //sample project "Random Music Player".
  //
  //I use it to implement the Lock Screen "Widget"
  //(control the music player on the lock-screen)
  //
  //Take a look at my service that plays songs to
  //see how I use this class.
  
  
  
  
  
  
  
  
  /**
   * Contains methods to handle registering/unregistering
   * remote control clients.
   *
   * These methods only run on ICS devices.
   * On previous devices, all methods are no-ops.
   */
  @SuppressWarnings({"rawtypes"})
  public class RemoteControlHelper {
  
      private static final String TAG = "RemoteControlHelper";
  
      private static boolean sHasRemoteControlAPIs = false;
  
      private static Method sRegisterRemoteControlClientMethod;
      private static Method sUnregisterRemoteControlClientMethod;
  
      static {
          try {
              ClassLoader classLoader = RemoteControlHelper.class.getClassLoader();
              Class sRemoteControlClientClass =
                      RemoteControlClientCompat.getActualRemoteControlClientClass(classLoader);
  
              sRegisterRemoteControlClientMethod = AudioManager.class.getMethod(
                      "registerRemoteControlClient", new Class[]{sRemoteControlClientClass});
  
              sUnregisterRemoteControlClientMethod = AudioManager.class.getMethod(
                      "unregisterRemoteControlClient", new Class[]{sRemoteControlClientClass});
  
              sHasRemoteControlAPIs = true;
  
          } catch (ClassNotFoundException e) {
              // Silently fail when running on an OS before ICS.
          } catch (NoSuchMethodException e) {
              // Silently fail when running on an OS before ICS.
          } catch (IllegalArgumentException e) {
              // Silently fail when running on an OS before ICS.
          } catch (SecurityException e) {
              // Silently fail when running on an OS before ICS.
          }
      }
  
      public static void registerRemoteControlClient(AudioManager audioManager,
              RemoteControlClientCompat remoteControlClient) {
  
          if (!sHasRemoteControlAPIs) {
              return;
          }
  
          try {
              sRegisterRemoteControlClientMethod.invoke(audioManager,
                      remoteControlClient.getActualRemoteControlClientObject());
  
          } catch (Exception e) {
              Log.e(TAG, e.getMessage(), e);
          }
      }
  
  
      public static void unregisterRemoteControlClient(AudioManager audioManager,
              RemoteControlClientCompat remoteControlClient) {
  
          if (!sHasRemoteControlAPIs) {
              return;
          }
  
          try {
              sUnregisterRemoteControlClientMethod.invoke(audioManager,
                      remoteControlClient.getActualRemoteControlClientObject());
  
          } catch (Exception e) {
              Log.e(TAG, e.getMessage(), e);
          }
      }
  }
  
  