Hide NavigationBar when scrolling tableView in CollectionView?

Question

I have collectionViewController and collectionViewCell include TableView.CollectionView is horizontal layout.I want hide navigationbar when scroll the tableView. Is there an

Answer 1

create a @property(assign, nonatomic) CGFloat currentOffset;

-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    scrollView = self.collectionProductView;
   _currentOffset = self.collectionProductView.contentOffset.y;

}

-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{

    CGFloat scrollPos = self.collectionProductView.contentOffset.y ;

    if(scrollPos >= _currentOffset ){
        //Fully hide your toolbar
        [UIView animateWithDuration:2.25 animations:^{
            [self.navigationController setNavigationBarHidden:YES animated:YES];

        }];
    } else {
        //Slide it up incrementally, etc.
        [self.navigationController setNavigationBarHidden:NO animated:YES];
    }
}

Please don't forget to again paste [self.navigationController setNavigationBarHidden:NO animated:YES];

at - viewwilldisappear or whenever the controller is moving to another because this may cause next view controller navigation bar to disappear.