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How to make a button glow when tapped with showsTouchWhenHighlighted

Swift version: 5.1

Paul Hudson    @twostraws   

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.

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Available from iOS 2.0

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