How do you tell if a UIScrollView content overflows

Question

I have a UIScroll view with content in it. If that content overflows, making the scroll view scrollable, I'd like to set the bottom of the view to be a certain color. If it does not, I'd like to set it to a different color.

My issue is, I do not know how to detect if a UIScrollView's content overflows and thus is scrollable.

Check if the scroll view's `contentSize` is bigger than it's `bounds`. — paulvs, Mar 10 '17 at 18:44

score 14 · Accepted Answer · answered Mar 13 '17 at 20:26

14

Check if the scroll view's contentSize is bigger than its bounds.

answered Mar 13 '17 at 20:26

paulvs

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score 0 · Answer 2 · answered Jun 14 '22 at 04:44

I know it's an old question, but my scroll view had a content insets set which made the accepted answer slightly off. Here's how to take the content inset into account:

if scrollView.contentSize.height + scrollView.contentInset.bottom > scrollView.bounds.size.height {
    // Scroll view is able to scroll.
}

How do you tell if a UIScrollView content overflows

2 Answers2