This snippet will be the last in our series on Swift animations for now. We will see how to set up the infinite image rotation. We use it for a starry background 😊.

Previous articles were:
Snippet: Swift UILabel, letter animation
Here is a snippet to animate the display of a UILabel as if you were typing text on the keyboard ...

Snippet: Swift SnapKit & RxSwift animation
Here is a code snippet of a sample animation with RxSwift and Snapkit. It is not that complicated ...

Image
let stars = UIImageView().then {
$0.contentMode = .scaleToFill
$0.alpha = 1
$0.image = UIImage(named: "stars")
$0.alpha = 0.4
}
Rotation
private func rotateImageView() {
UIView.animate(withDuration: 240, delay: 0, options: UIView.AnimationOptions.curveLinear, animations: { () -> Void in
self.stars.transform = self.stars.transform.rotated(by: .pi / 2)
}) { (finished) -> Void in
if finished {
self.rotateImageView()
}
}
}
Launch
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
rotateImageView()
}
Perfect 👏
To give you an idea, by assembling the three articles listed above, we can achieve this :