1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.musicplayer; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.util.Log; 23 import android.view.KeyEvent; 24 import android.widget.Toast; 25 26 /** 27 * Receives broadcasted intents. In particular, we are interested in the 28 * android.media.AUDIO_BECOMING_NOISY and android.intent.action.MEDIA_BUTTON intents, which is 29 * broadcast, for example, when the user disconnects the headphones. This class works because we are 30 * declaring it in a <receiver> tag in AndroidManifest.xml. 31 */ 32 public class MusicIntentReceiver extends BroadcastReceiver { 33 @Override onReceive(Context context, Intent intent)34 public void onReceive(Context context, Intent intent) { 35 if (intent.getAction().equals(android.media.AudioManager.ACTION_AUDIO_BECOMING_NOISY)) { 36 Toast.makeText(context, "Headphones disconnected.", Toast.LENGTH_SHORT).show(); 37 38 // send an intent to our MusicService to telling it to pause the audio 39 context.startService(new Intent(MusicService.ACTION_PAUSE)); 40 41 } else if (intent.getAction().equals(Intent.ACTION_MEDIA_BUTTON)) { 42 KeyEvent keyEvent = (KeyEvent) intent.getExtras().get(Intent.EXTRA_KEY_EVENT); 43 if (keyEvent.getAction() != KeyEvent.ACTION_DOWN) 44 return; 45 46 switch (keyEvent.getKeyCode()) { 47 case KeyEvent.KEYCODE_HEADSETHOOK: 48 case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: 49 context.startService(new Intent(MusicService.ACTION_TOGGLE_PLAYBACK)); 50 break; 51 case KeyEvent.KEYCODE_MEDIA_PLAY: 52 context.startService(new Intent(MusicService.ACTION_PLAY)); 53 break; 54 case KeyEvent.KEYCODE_MEDIA_PAUSE: 55 context.startService(new Intent(MusicService.ACTION_PAUSE)); 56 break; 57 case KeyEvent.KEYCODE_MEDIA_STOP: 58 context.startService(new Intent(MusicService.ACTION_STOP)); 59 break; 60 case KeyEvent.KEYCODE_MEDIA_NEXT: 61 context.startService(new Intent(MusicService.ACTION_SKIP)); 62 break; 63 case KeyEvent.KEYCODE_MEDIA_PREVIOUS: 64 // TODO: ensure that doing this in rapid succession actually plays the 65 // previous song 66 context.startService(new Intent(MusicService.ACTION_REWIND)); 67 break; 68 } 69 } 70 } 71 } 72