我试图播放音乐与后台服务。首先,我对播放和暂停音乐toggle button
在MainActivity,我创建 BackgroundSoundService只是播放音乐的所有活动不能在后台播放:播放音乐与后台服务
public class BackgroundSoundService extends Service {
private static final String TAG = "BackgroundSoundService";
MediaPlayer player;
public IBinder onBind(Intent arg0) {
Log.i(TAG, "onBind()");
return null;
}
@Override
public void onCreate() {
super.onCreate();
player = MediaPlayer.create(this, R.raw.vaporv2);
player.setLooping(true); // Set looping
player.setVolume(100,100);
Log.i(TAG, "onCreate() , service started...");
}
public int onStartCommand(Intent intent, int flags, int startId) {
player.start();
return Service.START_STICKY;
}
public IBinder onUnBind(Intent arg0) {
Log.i(TAG, "onUnBind()");
return null;
}
public void onStop() {
Log.i(TAG, "onStop()");
}
public void onPause() {
if(player!=null && player.isPlaying()){
player.pause();
}
Log.i(TAG, "onPause()");
}
@Override
public void onDestroy() {
player.stop();
player.release();
Log.i(TAG, "onCreate() , service stopped...");
}
@Override
public void onLowMemory() {
Log.i(TAG, "onLowMemory()");
}
}
和MainActivity:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MusicButton = (ToggleButton) findViewById(R.id.toggleButton);
MusicButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (MusicButton.isChecked()) {
//mediaPlayer.pause();
Intent myService = new Intent(MainActivity.this, BackgroundSoundService.class);
startService(myService);
} else {
//mediaPlayer.start();
Intent myService = new Intent(MainActivity.this, BackgroundSoundService.class);
stopService(myService);
}
}
});
当我暂停音乐并再次播放时,会出现问题。音乐从一开始就开始,当我希望音乐从停止播放的地方继续。我的第二个问题是我不想在后台播放音乐,我想在应用程序处于后台时停止播放音乐,请提供任何帮助。
查看此[链接](https://stackoverflow.com/questions/27685889/how-to-stop-service-of-music-background)停止音乐时,它在后台。 – Thracian