Adjust UIButton font size to width

In iOS 13.1 with Swift 5, I had to provide `contentEdgeInsets` also to adjust the paddings.

extension UIButton {
@IBInspectable var adjustFontSizeToWidth: Bool {
get {
return self.titleLabel?.adjustsFontSizeToFitWidth ?? false
}
set {
self.titleLabel?.numberOfLines = 1
self.titleLabel?.adjustsFontSizeToFitWidth = newValue;
self.titleLabel?.lineBreakMode = .byClipping;
self.titleLabel?.baselineAdjustment = .alignCenters
self.contentEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
}
}
}

Try this:

button.titleLabel?.numberOfLines = 1
button.titleLabel?.adjustsFontSizeToFitWidth = true
button.titleLabel?.lineBreakMode = .byClipping //<-- MAGIC LINE

I'm not sure why this does the trick but it does :)

if none of the other answers helps, make sure you set the default storyboard style value and then `adjustsFontSizeToFitWidth` should work.

![buttons props][1]


[1]: