iOS 13 Segmented Control: Remove swipe gesture to select segment

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隐瞒了意图╮
隐瞒了意图╮ 2021-01-04 18:16

TLDR: How to remove the swipe/pan gesture recognizer for UISegmentedControl on iOS 13?

Hi, on iOS 13, lots changed with UISegmentedControl. Mostly, the changes were

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  • 2021-01-04 19:05

    I upgraded @Aystub's answer. You can only allow UITapGestureRecogniger to select a segment.

    class NoSwipeSegmentedControl: UISegmentedControl {
            override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
    
                if(gestureRecognizer.isKind(of: UITapGestureRecognizer.self)){
                    return false
                }else{
                    return true
                }
    
           }
    }
    
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  • 2021-01-04 19:14

    I have a similar setup (UISegmentedControl inside a UIScrollView bc it's too long and the client didn't want to compress the content to fit). This worked for me (Built on Xcode 11.1):

    class NoSwipeSegmentedControl: UISegmentedControl {
    
        override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
            return true
        }
    }
    

    Then set the class of my UISegmentedControl to that. In my app this only prevents the swipe-to-select gesture on UISegmentedControl objects embedded within a UIScrollView. If it is not in a UIScrollView nothing behaves any differently. Which makes sense because gestureRecognizerShouldBegin() returns true by default. So why this allows the UIScrollView to take priority on the swipe gesture, I have no idea. But hope it helps.

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  • 2021-01-04 19:16

    Using this code allows the segmented control to still be swiped UNLESS it's embedded in a UIScrollView. This is the smallest tradeoff in functionality in my opinion

    final class NoSwipeSegmentedControl: UISegmentedControl {
    
        override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
            guard type(of: gestureRecognizer).description() != "UIScrollViewPanGestureRecognizer" else {
                return true
            }
            return super.gestureRecognizerShouldBegin(gestureRecognizer)
        }
    
    }
    
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