hideLevelScroll method

void hideLevelScroll()

Implementation

void hideLevelScroll() {
  scrollController.addListener(() {
    if (scrollController.offset >= 20) {
      invisible = true;
      notifyListeners();
    }
  });
  scrollController.addListener(() {
    if (scrollController.offset < 20) {
      invisible = false;
      notifyListeners();
    }
  });
}