Swift version: 5.0
If you want an easy way to let users know when a
UIButton was tapped, try setting its
showsTouchWhenHighlighted property to be true. This will render a circular glow effect behind the button when it's tapped, which is particularly effective on text-only buttons.
Here's the code:
btn.showsTouchWhenHighlighted = true
If you're using Interface Builder, look for and check the "Shows touch when highlighted" option for your button.
Available from iOS 2.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.