myRecyclerView.addOnScrollListener(
  new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
      super.onScrollStateChanged(recyclerView, newState);
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
      super.onScrolled(recyclerView, dx, dy);
      CalendarActivity.instance.runOnUiThread(
        new Runnable() {
          @Override
          public void run() {
          enableScreen();
        }
      });
    }
  });