How to make “shaking” animation

Question

In my xcode project I have an UIImage. I want to make it shaking (animation) from left to right a little bit. I wrote this code, however, its not working.

-(void         


        

Answer 1

func shakeView(_ view: UIView?) {
    let shake = CABasicAnimation(keyPath: "position")
    shake.duration = 0.1
    shake.repeatCount = 2
    shake.autoreverses = true
    shake.fromValue = NSValue(cgPoint: CGPoint(x: (view?.center.x)! - 5, y: view?.center.y ?? 0.0))
    shake.toValue = NSValue(cgPoint: CGPoint(x: (view?.center.x)! + 5, y: view?.center.y ?? 0.0))
    view?.layer.add(shake, forKey: "position")
}