Read up all answers and can't see correct solution. The right way do to so is to make custom UIViewControllerAnimatedTransitioning for presented VC delegate.
So it assumes to make more steps, but the result is more customizable and haven't some side effects, like moving from view together with presented view.
So, assume you have some ViewController, and there is a method for presenting
var presentTransition: UIViewControllerAnimatedTransitioning?
var dismissTransition: UIViewControllerAnimatedTransitioning?
func showSettings(animated: Bool) {
let vc = ... create new vc to present
presentTransition = RightToLeftTransition()
dismissTransition = LeftToRightTransition()
vc.modalPresentationStyle = .custom
vc.transitioningDelegate = self
present(vc, animated: true, completion: { [weak self] in
self?.presentTransition = nil
})
}
presentTransition
and dismissTransition
is used for animating your view controllers.
So you adopt your ViewController to UIViewControllerTransitioningDelegate
:
extension ViewController: UIViewControllerTransitioningDelegate {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return presentTransition
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return dismissTransition
}
}
So the last step is to create your custom transition:
class RightToLeftTransition: NSObject, UIViewControllerAnimatedTransitioning {
let duration: TimeInterval = 0.25
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
let container = transitionContext.containerView
let toView = transitionContext.view(forKey: .to)!
container.addSubview(toView)
toView.frame.origin = CGPoint(x: toView.frame.width, y: 0)
UIView.animate(withDuration: duration, delay: 0, options: .curveEaseOut, animations: {
toView.frame.origin = CGPoint(x: 0, y: 0)
}, completion: { _ in
transitionContext.completeTransition(true)
})
}
}
class LeftToRightTransition: NSObject, UIViewControllerAnimatedTransitioning {
let duration: TimeInterval = 0.25
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
let container = transitionContext.containerView
let fromView = transitionContext.view(forKey: .from)!
container.addSubview(fromView)
fromView.frame.origin = .zero
UIView.animate(withDuration: duration, delay: 0, options: .curveEaseIn, animations: {
fromView.frame.origin = CGPoint(x: fromView.frame.width, y: 0)
}, completion: { _ in
fromView.removeFromSuperview()
transitionContext.completeTransition(true)
})
}
}
In that code view controller is presented over current context, you can make your customizations from that point. Also you may see custom UIPresentationController
is useful as well (pass in using UIViewControllerTransitioningDelegate
)