android service 学习

核心提示：回调函数里面使用musicService = ((BindMusicService.MyBinder)(service)).getService();来获取BindMusicService服务对象，有了BindMusicService实例对象，android service 学习(7)，就可以调用服务提供的各种控制音乐

回调函数里面使用musicService = ((BindMusicService.MyBinder)(service)).getService();来获取BindMusicService服务对象，有了BindMusicService实例对象，就可以调用服务提供的各种控制音乐播放的哦功能。

下面看看BindMusicService.java的实现：

view sourceprint?01/**

02 * @author allin.dev

03 * http://allin.cnblogs.com/

04 */

05public class BindMusicService extends Service {

06

07 private static final String TAG = "MyService";

08 private MediaPlayer mediaPlayer;

09

10 private final IBinder binder = new MyBinder();

11

12 public class MyBinder extends Binder {

13 BindMusicService getService() {

14 return BindMusicService.this;

15 }

16 }

17

18 /*

19 * (non-Javadoc)

20 *

21 * @see android.app.Service#onBind(android.content.Intent)

22 */

23 @Override

24 public IBinder onBind(Intent intent) {

25 Log.d(TAG, "onBind");

26 play();

27 return binder;

28 }

29

30 @Override

31 public void onCreate() {

32 super.onCreate();

33

34 Log.d(TAG, "onCreate");

35 Toast.makeText(this, "show media player", Toast.LENGTH_SHORT).show();

36

37

38 }

39

40 @Override

41 public void onDestroy() {

42 super.onDestroy();

43

44 Log.d(TAG, "onDestroy");

45 Toast.makeText(this, "stop media player", Toast.LENGTH_SHORT);

46 if(mediaPlayer != null){

47 mediaPlayer.stop();

48 mediaPlayer.release();

49 }

50 }

51

52

53 public void play() {

54 if (mediaPlayer == null) {