Swipe gesture interrupts UISlider control in iOS 13, but not previous iOS versions

Question

Note: This is the iOS 13 beta, but also could apply to the official release tomorrow.

Update 2: I replaced it with a larger thumb

Answer 1

SWIFT 5

The Problem can be solve using delegate method of gesturerecognizer as below

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
    if touch.view?.isKind(of: UISlider.self) ?? false {
        return false
    } else {
        return true
    }
}

Answer 2

What I did was use a gestureRecognizer function to stop any gestures if a touch was detected on my UISliders. Make sure to add UIGestureRecognizerDelegate and set the UISwipeGestureRecognizer's delegate to self.

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {

   if touch.view == self.view.viewWithTag(viewTags.MySlider.rawValue) {
        return false
   }
   else if touch.view == self.view.viewWithTag(viewTags.AnotherSlider.rawValue) {
        return false
   }

   return true
}

Answer 3

I tried to find something during the last hour. It looks like the swipe gesture recognizer as interferance with UISlider.

The problem appears only if you are using right/left direction. Perhaps you should wait before update your app or change your UI to use the up/down swipe gesture.

At this time the slider works normally if you wait a bit before you move your finger. Hoping Apple will fix it quickly.

Answer 4

I had the same issue and managed to resolve it by doing the following:

Add a panGesture ,that does nothing, to your sliders and set their cancelsTouchesInView propery to false.

let panGesture = UIPanGestureRecognizer(target: nil, action:nil)
                    panGesture.cancelsTouchesInView = false
                    slider.addGestureRecognizer(panGesture)

Now your sliders should slide like a knife cutting a butter with no swipe interruption.