private void doPauseResume() {
   if (mFensterPlayer.isPlaying()) {
     mFensterPlayer.pause();
   } else {
     mFensterPlayer.start();
   }
   updatePausePlay();
 }
  @Override
  public boolean dispatchKeyEvent(final KeyEvent event) {
    int keyCode = event.getKeyCode();
    final boolean uniqueDown =
        event.getRepeatCount() == 0 && event.getAction() == KeyEvent.ACTION_DOWN;
    if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK
        || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
        || keyCode == KeyEvent.KEYCODE_SPACE) {
      if (uniqueDown) {
        doPauseResume();
        show(DEFAULT_TIMEOUT);
        if (mPauseButton != null) {
          mPauseButton.requestFocus();
        }
      }
      return true;
    } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
      if (uniqueDown && !mFensterPlayer.isPlaying()) {
        mFensterPlayer.start();
        updatePausePlay();
        show(DEFAULT_TIMEOUT);
      }
      return true;
    } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
      if (uniqueDown && mFensterPlayer.isPlaying()) {
        mFensterPlayer.pause();
        updatePausePlay();
        show(DEFAULT_TIMEOUT);
      }
      return true;
    } else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
        || keyCode == KeyEvent.KEYCODE_VOLUME_UP
        || keyCode == KeyEvent.KEYCODE_VOLUME_MUTE
        || keyCode == KeyEvent.KEYCODE_CAMERA) {
      // don't show the controls for volume adjustment
      return super.dispatchKeyEvent(event);
    } else if (keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_MENU) {
      if (uniqueDown) {
        hide();
      }
      return true;
    }

    show(DEFAULT_TIMEOUT);
    return super.dispatchKeyEvent(event);
  }