UIView shake animation

Question

i\'m trying to make a UIView shake when a button is pressed.

I am adapting the code I found on http://www.cimgf.com/2008/02/27/core-animation-tutorial-window-shake-e

Answer 1

Swift 3 implementation based on @Mihael-Isaev answer

private enum Axis: StringLiteralType {
    case x = "x"
    case y = "y"
}

extension UIView {
    private func shake(on axis: Axis) {
        let animation = CAKeyframeAnimation(keyPath: "transform.translation.\(axis.rawValue)")
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
        animation.duration = 0.6
        animation.values = [-20, 20, -20, 20, -10, 10, -5, 5, 0]
        layer.add(animation, forKey: "shake")
    }
    func shakeOnXAxis() {
        self.shake(on: .x)
    }
    func shakeOnYAxis() {
        self.shake(on: .y)
    }
}