@Override
  protected void onResume() {
    super.onResume();
    //		setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    mResumed = true;

    mAudioRingerMode = AudioUtil.setMuteAll(this, true, mAudioRingerMode);
  }
  @Override
  public void onPause() {
    super.onPause();
    mResumed = false;
    if (mControlResumed) {
      if (null != mControl) {
        mControl.onPause();
      }
      mControlResumed = false;
    }

    mAudioRingerMode = AudioUtil.setMuteAll(this, false, mAudioRingerMode);
  }