Asynctask Music not stopping when power button pressed

Question

In my application background music is controlled by an asynctask. When the home button is pressed the music shuts off. When the power button is pressed it just continues playing. I also realized if i press the power button then resume it it starts to copies of the song at the same time.

private single s;
private BackgroundSound mBackgroundSound = new BackgroundSound();


protected void onPause(){
    super.onPause();
    Log.d("mSTATE","PAUSE");
    s.onPause();
    mBackgroundSound.cancel(true);
}

public void onBackPressed() {
       super.onBackPressed();
       return;
}

protected void onDestroy(){
    super.onDestroy();
    Log.d("mState","DESTROY");
}

public void onWindowFocusChanged(boolean change){
    super.onWindowFocusChanged(change);

}

@Override
protected void onResume(){
    super.onResume();
    mBackgroundSound = new BackgroundSound();
    mBackgroundSound.execute(null);
    Log.d("mSTATE","RESUME");
    s.onResume();

}

@Override
protected void onStop(){
    super.onStop();
    Log.d("mSTATE","STOP");
    s.freeMemory();
    mBackgroundSound.end();


}

@Override
protected void onRestart(){
    super.onRestart();
    Log.d("mSTATE","RESTART");
}

@Override 
protected void onStart(){
    super.onStart();
    Log.d("mSTATE","STARTER");
}


public class BackgroundSound extends AsyncTask<Void, Void, Void> {
    private MediaPlayer player;
    protected void onPreExecute() {
        player = MediaPlayer.create(SingleActivity.this, R.raw.song);
    }
    @Override
    protected Void doInBackground(Void... params) {

        player.setLooping(true);
        AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); 
         int currentVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_RING);
         int maxRingerVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_RING);
         double proportion = currentVolume/(double)maxRingerVolume;
         int maxMusicVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
         int volume = (int)(proportion * maxMusicVolume);
        player.setVolume(volume,volume); 
        player.setLooping(true);
        player.start(); 
        return null;
    }

    public void end(){
        player.stop();
        player.release();
    }

}

score 2 · Accepted Answer · answered Sep 03 '12 at 03:24

AFAIK when Power button is pressed, only onpause is called and no onstop is called, Since no other activity has come to the foreground, Only a system window has come on top. Hence your end call is not being called.

A better way would be to override Asynctask.onCancelled and call Asynctask.cancel method in OnPause rather than onstop

score 1 · Answer 2 · edited May 23 '17 at 12:20

1

Just to add, you need to override onCancelled() and add check in doInBackground(). See: Ideal way to cancel an executing AsyncTask

edited May 23 '17 at 12:20

Community

1
1

answered Sep 03 '12 at 03:21

nandaka

101
1
6

what code should i add whe noverriding onCancelled? Should it be everything thats in the end()? and what exactly is checking in doinbackgroudn()? Thanks for your help – MikeC Sep 05 '12 at 00:30

score 0 · Answer 3 · answered Sep 03 '12 at 02:59

0

You have to cancel your asyncTask. You should call asyncTask.cancel(true) in your Activity's onDestroy().

answered Sep 03 '12 at 02:59

Lazy Ninja

22,342
9
83
103

Asynctask Music not stopping when power button pressed

3 Answers3