Managing Audio Focus

Activity.java

AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.requestAudioFocus(new AudioService(), AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

AudioService.java

public class AudioService extends Service implements AudioManager.OnAudioFocusChangeListener {

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onAudioFocusChange(int focusChange) {
        switch (focusChange) {
        case AudioManager.AUDIOFOCUS_GAIN:
            break;
        case AudioManager.AUDIOFOCUS_LOSS:
        case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
        case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK:
            // audio pause
            break;
        }
    }
}