@Override protected void onDestroy() { if (Media3D.DEBUG) { Log.d(TAG, "onDestroy"); } unloadPage(mPortalPage); mPortalPage = null; unloadPage(mWeatherPage); mWeatherPage = null; unloadPage(mPhotoPage); mPhotoPage = null; unloadPage(mVideoPage); mVideoPage = null; mOrientationListener.disable(); mOrientationListener = null; // Remove references of all actors, especially for Text bitmap mStage.removeAll(); super.onDestroy(); }