UIScrollView - showing the scroll bar

Question

Possibly a simple one!

Does anyone know how to get the scroll bar of a UIScrollView to constantly show?

It displays when the user is scrolling, so they can s

Answer 1

ScrollBar that functions just like the iOS built in one, but you can mess with the color and width.

-(void)persistantScrollBar
{
    [persistantScrollBar removeFromSuperview];
    [self.collectionView setNeedsLayout];
    [self.collectionView layoutIfNeeded];

    if (self.collectionView.contentSize.height > self.collectionView.frame.size.height + 10)
    {
        persistantScrollBar = [[UIView alloc] initWithFrame:(CGRectMake(self.view.frame.size.width - 10, self.collectionView.frame.origin.y, 5, (self.collectionView.frame.size.height /self.collectionView.contentSize.height) * self.collectionView.frame.size.height))];
        persistantScrollBar.backgroundColor = [UIColor colorWithRed:207/255.f green:207/255.f blue:207/255.f alpha:0.5f];
        persistantScrollBar.layer.cornerRadius = persistantScrollBar.frame.size.width/2;
        persistantScrollBar.layer.zPosition = 0;
        [self.view addSubview:persistantScrollBar];
    }
}

-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    CGRect rect = persistantScrollBar.frame;
    rect.origin.y =  scrollView.frame.origin.y + (scrollView.contentOffset.y *(self.collectionView.frame.size.height/self.collectionView.contentSize.height));
    rect.size.height = (self.collectionView.frame.size.height /self.collectionView.contentSize.height) * self.collectionView.frame.size.height;
    if ( scrollView.contentOffset.y <= 0 )
    {
        rect.origin.y = scrollView.frame.origin.y;
        rect.size.height = rect.size.height + (scrollView.contentOffset.y);
    }
    else if (scrollView.contentOffset.y + scrollView.frame.size.height >= scrollView.contentSize.height)
    {
        rect.size.height = rect.size.height - ((scrollView.contentOffset.y + scrollView.frame.size.height) - scrollView.contentSize.height);
        rect.origin.y =  (self.collectionView.frame.origin.y + self.collectionView.frame.size.height - 5) - rect.size.height;
    }

    persistantScrollBar.frame = rect;
}