UIButtons are not responding during animation - iOS Swift 3

Question

I\'m building a calculator app, when I tap on the buttons there is a short animation. The problem is the buttons do not respond while they are animating, which makes the app

Answer 1

Call different method of UIView:

func myButton () {
    sender.layer.backgroundColor = firstColor
    sender.setTitleColor(UIColor.white, for: UIControlState.normal)

    UIView.animate(withDuration: 0.5,
                   delay: 0.0,
                   options: .allowUserInteraction,
                   animations: {
                       sender.layer.backgroundColor = secondColor },  
                   completion: nil)
}