CustomAlertPresentationController is a UIPresentationController which mimics iOS' native UIAlertController presentation, modal display, and dismissal. It is written in Swift 4.
It can be used to present any UIViewController in the same style as an iOS alert.
final class ViewController: UIViewController {
let transitioningManager = CustomAlertTransitioningManager()
// ...
func displayCustomAlert() {
let customAlertController = MyCustomAlertController()
customAlertController.transitioningDelegate = transitioningManager
customAlertController.modalPresentationStyle = .custom
present(customAlertController, animated: true)
}
}