Android 背景音乐播放

1. 主要引用这个类(AudioService.java)

 1 public class AudioService extends Service implements 2         MediaPlayer.OnCompletionListener { 3     // 实例化MediaPlayer对象 4     MediaPlayer player; 5     private final IBinder binder = new AudioBinder(); 6  7     @Override 8     public IBinder onBind(Intent intent) { 9         return binder;10     }11 12     public void onCreate() {13         super.onCreate();14         // 从raw文件夹中获取一个应用自带的mp3文件15         player = MediaPlayer.create(this, R.raw.qq);16         player.setOnCompletionListener(this);17         player.setLooping(true);18     }19 20     @Override21     public int onStartCommand(Intent intent, int flags, int startId) {22         super.onStartCommand(intent, flags, startId);23         if (!player.isPlaying()) {24             new MusicPlayThread().start();25         }26         else player.isPlaying();27         return START_STICKY;28     }29 30     31     /**32      * 当Audio播放完的时候触发该动作33      */34     public void onCompletion(MediaPlayer mp) {35         stopSelf();// 结束了，则结束Service36     }37 38     public void onDestroy() {39         super.onDestroy();40         if (player.isPlaying()) {41             player.stop();42         }43         player.release();44     }45 46     // 为了和Activity交互，我们需要定义一个Binder对象47     public class AudioBinder extends Binder {48         // 返回Service对象49         public AudioService getService() {50             return AudioService.this;51         }52     }53 54     private class MusicPlayThread extends Thread {55         public void run() {56             if (!player.isPlaying()) {57                 player.start();58             }59         }60     }61    62 }

AudioService.java

2.自动播放功能用了 SharedPreferences

3. 在AndroidManifest.xml中的</activity>下面加上

 <service android:name="com.example.musicServer.AudioService" ></service>

4.界面运行图

Android 背景音乐播放

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