android service 学习

核心提示：12 public void onClick(View v) {1314 switch (v.getId()) {15 case R.id.play:16 Log.d(TAG, "onClick: binding srvice");17 musicService.play();18 break;19

12 public void onClick(View v) {

13

14 switch (v.getId()) {

15 case R.id.play:

16 Log.d(TAG, "onClick: binding srvice");

17 musicService.play();

18 break;

19 case R.id.stop:

20 Log.d(TAG, "onClick: stoping srvice");

21 if(musicService != null){

22 musicService.stop();

23 }

24 break;

25 case R.id.pause:

26 Log.d(TAG, "onClick: pausing srvice");

27 if(musicService != null){

28 musicService.pause();

29 }

30 break;

31 case R.id.exit:

32 Log.d(TAG, "onClick: exit");

33 this.finish();

34 break;

35 }

36 }

37

38

39private void connection(){

40 Log.d(TAG, "connecting.....");

41 Intent intent = new Intent("org.allin.android.bindService");

42 bindService(intent, sc, Context.BIND_AUTO_CREATE);

43

44 }

45private ServiceConnection sc = new ServiceConnection() {

46 @Override

47 public void onServiceDisconnected(ComponentName name) {

48 musicService = null;

49 Log.d(TAG, "in onServiceDisconnected");

50 }

51

52 @Override

53 public void onServiceConnected(ComponentName name, IBinder service) {

54 musicService = ((BindMusicService.MyBinder)(service)).getService();

55 if(musicService != null){

56 musicService.play();

57 }

58

59 Log.d(TAG, "in onServiceConnected");

60 }

61 };

62}

这里使用了bindService(intent, sc, Context.BIND_AUTO_CREATE);来启动服务的，

我们需要定义ServiceConnectionnn，并实现里面的方法，当服务绑定成功后会调用ServiceConnectionnn中的回调函数：

public void onServiceConnected(ComponentName name, IBinder service)，