extension UIView {
func shake() {
let animation = CAKeyframeAnimation(keyPath: "transform.translation.x")
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
animation.duration = 0.6
animation.values = [-10.0, 10.0, -7.0, 7.0, -5.0, 5.0, 0.0 ]
layer.add(animation, forKey: "shake")
}
}
This function can be used to draw attention to a specific view by shaking it a bit.