request-camera-authorization-animation-methods.swift

private extension RequestCameraAuthorizationView {
  
    // ...
  
    func animateInView(view: UIView, delay: TimeInterval) {
        view.alpha = 0
        view.transform = CGAffineTransform(translationX: 0, y: -20)
        let animation = UIViewPropertyAnimator(duration: 0.2, curve: .easeInOut) {
            view.alpha = 1
            view.transform = .identity
        }
        animation.startAnimation(afterDelay: delay)
    }

    func animateOutView(view: UIView, delay: TimeInterval, completion: (() -> Void)? = nil) {
        let animation = UIViewPropertyAnimator(duration: 0.2, curve: .easeInOut) {
            view.alpha = 0
            view.transform = CGAffineTransform(translationX: 0, y: -20)
        }
        animation.startAnimation(afterDelay: delay)
        animation.addCompletion { _ in
            completion?()
        }
    }
  
}