[android-developers] OnAudioFocusChangeListener is not working as expected

Hi all,

I am developing an application, where i need to capture the timestamp of music starts and ends. For that have used 

OnAudioFocusChangeListener, and request for AUDIO_GAIN event. Below is my code.

public class AudioManagerExample extends Activity implements OnAudioFocusChangeListener{

   public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);

        int result = am.requestAudioFocus(this,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN);

        if(result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED)

        Log.d("AudioManager", "Request Granted");

      }

  @Override

   public void onAudioFocusChange(int focusChange) {

     if(focusChange == AudioManager.AUDIOFOCUS_GAIN)

            Log.d("AudioManager", "Inside on audio focus gained " );

    else if(focusChange == AudioManager.AUDIOFOCUS_LOSS)

            Log.d("AudioManager", "Inside on audio focus lossed ");

     }

}

onAudioFocusChange function get called when i play the music, am getting "audio focus lossed" message instead of gain message and I checked the focusChange value it is -1. Also listener will be called only once i.e when i opened the music first time. Listener is not called If music player is closed and opened again.  Why is this so?  Do i need to add any permission? I had surfed a lot but not get the proper solution Please anybody could explain?

Thanks

Pushpa

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