[英]Android: Service won't bind
Im trying to create bound service. 我正在尝试创建绑定服务。 As a test I created service which plays music:
作为测试,我创建了播放音乐的服务:
public class MusicService extends Service {
private final IBinder myBinder = new LocalBinder();
MediaPlayer player;
@Override
public IBinder onBind(Intent arg0) {
return myBinder;
}
@Override
public void onCreate() {
super.onCreate();
player = MediaPlayer.create(this,R.raw.teardrop);
player.setLooping(true); // Set looping
player.setVolume(100,100);
player.start();
}
@Override
public void onDestroy() {
player.stop();
player.release();
}
public class LocalBinder extends Binder {
public MusicService getService() {
return MusicService.this;
}
}
}
And when I bind it from Activity nothing happens: 当我从Activity绑定它时,什么也没发生:
public class MainActivity extends TabSwipeActivity {
boolean isBound = false;
MusicService myService;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Some code
Intent intent = new Intent(this, MusicService.class);
bindService(intent, myConnection, Context.BIND_AUTO_CREATE);
if(isBound){
Toast.makeText(this, "success", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(this, "bind failed", Toast.LENGTH_SHORT).show();
}
}
private ServiceConnection myConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className,IBinder service) {
LocalBinder binder = (LocalBinder) service;
myService = binder.getService();
isBound = true;
}
public void onServiceDisconnected(ComponentName arg0) {
isBound = false;
}
};
}
Service is registred in manifest: 服务已在清单中注册:
<service android:name=".MusicService" />
Bind failed appears and nothing happens 绑定失败出现,没有任何反应
EDIT: bindService() returns false 编辑:bindService()返回false
EDIT2: when I add complete name in manifest eg. EDIT2:当我在清单中添加完整名称时 com.mypackage.mypackage2.MusicService bind Service() returned true.
com.mypackage.mypackage2.MusicService绑定Service()返回true。 But onServiceConnected() is never called.
但是永远不会调用onServiceConnected()。
Next question is: When I create service which implements LocationListener, what should I use to send message to activity everytime when onLocationChanged()? 下一个问题是:当我创建实现LocationListener的服务时,每次onLocationChanged()时应该使用什么向活动发送消息?
I already know the solution. 我已经知道了解决方案。 I extends
TabActivity
made by actionBarSherlock
instead of Activity
. 我扩展了
actionBarSherlock
而不是Activity
制成的TabActivity
。 This is known issue: 这是已知问题:
getApplicationContext().bindService();
fix that. 解决它。
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