Animate Rotating UIImageView

Question

I want to rotate a UIImageView by roughly 10 degrees left/right but have a smooth animation, rather than a sudden turn which I see using:

play         


        

Answer 1

Converted for Swift 3/4:

let animation = CABasicAnimation(keyPath: "transform.rotation")
animation.fromValue = 0
animation.toValue =  Double.pi * 2.0
animation.duration = 2
animation.repeatCount = .infinity
animation.isRemovedOnCompletion = false

imageView.layer.add(animation, forKey: "spin")