Making an animation to expand and shrink an UIView

Question

I want to create an animation that will resize an UIView and its contents by a factor. Basically, I want to make an animation that first expands the view then shrinks it bac

Answer 1

Swift 5 UIView extension:

extension UIView {
    func pulse(withIntensity intensity: CGFloat, withDuration duration: Double, loop: Bool) {
        UIView.animate(withDuration: duration, delay: 0, options: [.repeat, .autoreverse], animations: {
            loop ? nil : UIView.setAnimationRepeatCount(1)
            self.transform = CGAffineTransform(scaleX: intensity, y: intensity)
        }) { (true) in
            self.transform = CGAffineTransform.identity
        }
    }
}

And then use the following:

yourView.pulse(withIntensity: 1.2, withDuration: 0.5, loop: true)

Just make sure you replace yourView with your own view.