View shake animation error when clicked - ios

Question

I've been using the following UIView extension to shake a view:
func shake(count: Float = 4, for duration: TimeInterval = 0.5,
withTranslation translation: CGFloat = 5) {
let animation: CABasicAnimation = CABasicAnimation(keyPath: "transform.translation.x")
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
animation.repeatCount = count
animation.duration = duration / TimeInterval(animation.repeatCount)
animation.autoreverses = true
animation.fromValue = NSValue(cgPoint: CGPoint(x: -translation, y: self.center.y))
animation.toValue = NSValue(cgPoint: CGPoint(x: translation, y: self.center.y))
layer.add(animation, forKey: "shake")
}
And the usage:
view.shake(count: 3, for: 0.2, withTranslation: 8)
This works well for shaking a view (in my case I'm shaking some buttons, UIView's, and a few image views).
The problem arises when I try clicking on one of the views during the shake animation.
I receive a:
Terminating app due to uncaught exception
'NSInvalidArgumentException', reason: '-[NSConcreteValue doubleValue]:
unrecognized selector sent to instance 0x600000442640'
In the case of the buttons, if I disable the button then initiate the shake animation it seems to prevent the error from occurring.
Unfortunately, this does not seems to work for the image views and UIViews.
I also disabled user interaction on the image views / UIView's to no avail.
I feel like this has something to do with the wrong coordinate being passed to the lower layers during a hit test check while the view is being animated.
Any insight into this error would be greatly appreciated.

Answer 1

You can try this code. It should be helpful:
extension UIView {
func shakeByX() {
let animation = CABasicAnimation(keyPath: "position")
animation.duration = 0.07
animation.repeatCount = 3
animation.autoreverses = true
animation.fromValue = NSValue(cgPoint: CGPoint(x: self.center.x - 6, y: self.center.y))
animation.toValue = NSValue(cgPoint: CGPoint(x: self.center.x + 6, y: self.center.y))
self.layer.add(animation, forKey: "position")
}
func shakeByY() {
let animation = CABasicAnimation(keyPath: "position")
animation.duration = 0.07
animation.repeatCount = 3
animation.autoreverses = true
animation.fromValue = NSValue(cgPoint: CGPoint(x: self.center.x, y: self.center.y - 6))
animation.toValue = NSValue(cgPoint: CGPoint(x: self.center.x, y: self.center.y + 6))
self.layer.add(animation, forKey: "position")
}
}