Part of UIScrollView doesn't respond to touches

Question

I have a UIScrollView with 7 UIButtons on it.

5 buttons are working fine but the other two (which the scroll view needs to be scrolled for the buttons to be reached) doesn't work most of the times (if I tap a lot of times they sometimes work but most of the time they don't).

I've tried to increase the contentSize and the buttons still don't work.

I've tried to change the x position of the buttons and they both work so the problem is definitely about the position in the scrollView.

Code:

scrollView:

self.buttonsScrollView = UIScrollView(frame: self.bounds)
self.buttonsScrollView?.frame.origin.y = (self.window?.frame.size.height)! - self.bounds.size.height
self.buttonsScrollView?.showsHorizontalScrollIndicator = false
self.buttonsScrollView?.canCancelContentTouches = true
self.buttonsScrollView?.clipsToBounds = false

buttons (x7)

let buttonX = UIButton(frame: CGRect(x: previousButton.frame.origin.x + spaceBetweenButtons, y: buttonsYPosition, width: buttonSize, height: buttonSize))
buttonX.setImage(UIImage(named: "buttonsXImage"), for: UIControlState())
buttonX.tag = 0
buttonX.addTarget(self, action: #selector(buttonPressed), for: .touchUpInside)
let buttonXRecognizer = UIPanGestureRecognizer(target: self, action: #selector(didDragButton))
buttonX.addGestureRecognizer(buttonXRecognizer)

Any ideas what can be the problem?

Thank you!

@toddg I've added the code for the scroll view and for the buttons. Please take a look — FS.O6, Apr 16 '17 at 13:32
Are the buttons at the bottom of the screen? Maybe you're running into this issue: http://stackoverflow.com/a/23047708 — toddg, Apr 16 '17 at 13:40
@toddg 5 of the buttons responds for taps. Just 2 buttons don't so I don't think it's the problem. Any other idea? — FS.O6, Apr 16 '17 at 13:45
Maybe your problem is the view that contains your scrollView , you can clip your container view, and see if your two problematics buttons are still there, or you can set border color and width for your scrollView container view — Reinier Melian, Apr 16 '17 at 13:51
@FS.O6 added as an Answer to avoid keeps this question as unanswered — Reinier Melian, Apr 16 '17 at 15:44

score 1 · Accepted Answer · answered Apr 16 '17 at 15:45

Your problem is the view that contains your scrollView, you can clip your container view, and see if your two problematics buttons are still there, or you can set border color and width for your scrollView container view

check clipping the view that contains your scrollView

self.scrollViewSuperView.clipsToBounds = true

or you can setup scrollViewSuperView border width and border color

self.scrollViewSuperView.borderColor = UIColor.red.cgColor
self.scrollViewSuperView.borderWidth = 1

Then adjust your constraints/frames according

I hope this helps

Part of UIScrollView doesn't respond to touches

1 Answers1