public void onEvent(ResetBackgroundEvent evt)
        {
            Drawable drawable = mBackgroundImage.Drawable;

            if (drawable != null)
            {
                ((TransitionDrawable)drawable).ReverseTransition(2000);
            }
            else
            {
                Bitmap bitmap = GameUtility.ScaleDown(Resource.Drawable.background, GameUtility.ScreenWidth(), GameUtility.ScreenHeight());
                mBackgroundImage.SetImageBitmap(bitmap);
            }
        }
 public virtual void onEvent(ResetBackgroundEvent evt)
 {
 }