UIButton Doesn't allow UIScrollView to scroll

Question

I have many UIButtons within a UIScrollView. Those UIButtons have actions attached to them in Touch Down Repeat. My problem is my scroll view doesn't scroll when I touch a button then scroll, but it works fine if I touch outside of the button.

How can I allow my scroll view to scroll even though a button is pressed?

score 14 · Accepted Answer · answered Feb 21 '11 at 19:22

14

As long as you have the Cancellable Content Touches in Interface Builder set it should work. You can also set it in code:

scrollView.canCancelContentTouches = YES;

answered Feb 21 '11 at 19:22

Domestic Cat

1,434
11
18

Wow, a simple checkbox fixes my issue. Thanks! – Matt S. Feb 21 '11 at 19:27
2

No problem. Also check out the `Delay Content Touches` property and docs, may be relevant to what you're doing as well. – Domestic Cat Feb 21 '11 at 19:49
7

Note that you also need to subclass UIScrollView to really make it work. See http://stackoverflow.com/a/3550157/908621 for details – fishinear Mar 22 '13 at 17:48
Above comment with link is vital to correctly handle this situation. – mxcl Jul 05 '14 at 22:47
What if ScrollView is added on the cell of UITableView? Will it work in thatb case? I don't think so – Developer Aug 03 '16 at 07:05

brandonscript · Answer 2 · 2016-03-15T18:12:02.523

So view.canCancelContentTouches = YES works OK if you don't also have delaysContentTouches set to YES. If you do though, the buttons won't work at all. What you need to do is subclass the UIScrollView (or UICollectionView/UITableView) and implement the following:

Objective-C

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
    if ([view isKindOfClass:UIButton.class]) {
        return YES;
    }
    return [super touchesShouldCancelInContentView:view];
}

Swift 2

override func touchesShouldCancelInContentView(view: UIView) -> Bool {
    if view is UIButton {
        return true
    }
    return super.touchesShouldCancelInContentView(view)
}

score 0 · Answer 3 · answered Nov 13 '19 at 15:31

0

Use a UITapGestureRecognizer with delaysTouchesBegan as a property set to true.

answered Nov 13 '19 at 15:31

Rudolf J

517
4
10

UIButton Doesn't allow UIScrollView to scroll

3 Answers3

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