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     @Override

21     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Service

36     }

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