code: private void removeBlurredView() {
          if (mBlurredBackgroundView != null) {
              ViewGroup parent = (ViewGroup) mBlurredBackgroundView.getParent();
              if (parent != null) {
                  parent.removeView(mBlurredBackgroundView);
              }
              mBlurredBackgroundView = null;
          }
      }
docs: Removed the blurred view from the view hierarchy.