Animate text change in UILabel

Question

I\'m setting a new text value to a UILabel. Currently, the new text appears just fine. However, I\'d like to add some animation when the new text appears. I\

Answer 1

Swift 4.2 solution (taking 4.0 answer and updating for new enums to compile)

extension UIView {
    func fadeTransition(_ duration:CFTimeInterval) {
        let animation = CATransition()
        animation.timingFunction = CAMediaTimingFunction(name:
            CAMediaTimingFunctionName.easeInEaseOut)
        animation.type = CATransitionType.fade
        animation.duration = duration
        layer.add(animation, forKey: CATransitionType.fade.rawValue)
    }
}

func updateLabel() {
myLabel.fadeTransition(0.4)
myLabel.text = "Hello World"
}