android service 学习

核心提示：下面是整个应用启动界面：先从使用startService启动Service学起首先编写一个Activityview sourceprint?01public class PlayMusic extends Activity implements OnClickListener {02 private static fi

下面是整个应用启动界面：

先从使用startService启动Service学起

首先编写一个Activity

view sourceprint?01public class PlayMusic extends Activity implements OnClickListener {

02 private static final String TAG = "PlayMusic";

03 private Button playBtn;

04 private Button stopBtn;

05 private Button pauseBtn;

06 private Button exitBtn;

07 private Button closeBtn;

08

09 //....(详见源码)

10

11@Override

12 public void onClick(View v) {

13 int op = -1;

14 Intent intent = new Intent("org.allin.android.musicService");

15

16 //广播用

17// Intent intent = new Intent("org.allin.android.musicReceiver");

18

19 switch (v.getId()) {

20 case R.id.play:

21 Log.d(TAG, "onClick: playing muic");

22 op = 1;

23 break;

24 case R.id.stop:

25 Log.d(TAG, "onClick: stoping music");

26 op = 2;

27 break;

28 case R.id.pause:

29 Log.d(TAG, "onClick: pausing music");

30 op = 3;

31 break;

32 case R.id.close:

33 Log.d(TAG, "onClick: close");

34 this.finish();

35 break;

36 case R.id.exit:

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

38 op = 4;

39 stopService(intent);

40 this.finish();

41 break;

42 }

43

44 Bundle bundle = new Bundle();

45 bundle.putInt("op", op);

46 intent.putExtras(bundle);

47 startService(intent);

48

49// sendBroadcast(intent);

50 }

51

52

53}

通过重写onClick方法来实现对播放音乐的控制。这里把播放音乐的各种操作用数字的方式通过Intent传递给service。