Unresponsive UIButton in subview added to UIStackView

I just ran into this issue myself. In my case, I had a UIStackView as a subview of my UIButton. I needed to set isUserInteractionEnabled = false on the stack view in order to get my button to work. This is probably a wise thing to set on any UIButton subview.

It seems to be that something is lying over your button and catching all the touch events.

1. Never turn on userInterectionEnabled if you don't need it

There is no reason why a normal view like subView should have set userInteractionEnabled set to true so put it to false.

2. Find the bug:

To find out witch view catches the event start your app on a device and navigate to the stackView. Now in Xcode, press the button "Debug View Hierarchy" (placed right over the console output)

After that you will see every view currently displayed on your device. What you do now is finding out wich views are above your button, and then in code turn their userInteractionEnabled value to false.

In my case, it was the aligment property of the StackView that was causing the problem.

When I set that property to Fill instead of Center the problem dissappeared.

I have had the exact same issue: a StackView which contains views. Each view contains a button and a label. The views are only containers for layout reasons.

In my case: I did not give the view a height constraint and it seems that it had a zero height (after changing the background color for debugging I did not see the view), but the button and label was visible (but unresponsive).

After I have added a height constraint to the layout view the (debug) background color was visible and the buttons responded as expected.