Is there an way to make an invisible UIButton that will still “be there” and catch touch events for my UIImageView?

Question

I thought to be clever and just put an transparent UIButton over an UIImageView with the exact frame size, so that I can wire it up easily with any event I like, for example

Answer 1

You can hide a button (or any object) and keep it active by adding a mask to its layer. The button will be invisible but will still catch events.

let layer = CAShapeLayer()
layer.frame = .zero
myButton.layer.mask = layer