Today I updated Xcode and then all my transitions in all my apps from the last few years stopped working. I tested running them on the new simulators and also by installing to iOS13.2 devices. However, transitions work fine when I download any of my apps from the App Store. I will try new builds on test flight in a moment. Maybe I've been doing something wrong al along these years?
Transition Code
let details = self.storyboard?.instantiateViewController(withIdentifier: "ViewSettings")
details?.transitioningDelegate = self.slideAnimatorLeft
self.present(details!, animated: true, completion: nil)
Transition Class
class SlideAnimatorLeft: NSObject, UIViewControllerAnimatedTransitioning, UIViewControllerTransitioningDelegate {
let duration = 0.9
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let fromView = transitionContext.view(forKey: UITransitionContextViewKey.from) else {
return
}
guard let toView = transitionContext.view(forKey: UITransitionContextViewKey.to) else {
return
}
let container = transitionContext.containerView
let screenOffUp = CGAffineTransform(translationX: container.frame.width, y: 0)
let screenOffDown = CGAffineTransform(translationX: -container.frame.width, y: 0)
container.addSubview(fromView)
container.addSubview(toView)
toView.transform = screenOffUp
UIView.animate(withDuration: duration, delay: 0.0, usingSpringWithDamping: 0.8, initialSpringVelocity: 0.8, options: [], animations: {
fromView.transform = screenOffDown
fromView.alpha = 1
toView.transform = CGAffineTransform.identity
toView.alpha = 1
}) { (success) in
transitionContext.completeTransition(success )
}
}
}
add this line your code.
details?.modalPresentationStyle = .fullScreen
// complete code
let details = self.storyboard?.instantiateViewController(withIdentifier: "CollectionViewController")
details?.transitioningDelegate = self.slideAnimatorLeft
details?.modalPresentationStyle = .fullScreen
self.present(details!, animated: true, completion: nil)
Try to change your modalPresentationStyle to custom like this:
let details = self.storyboard?.instantiateViewController(withIdentifier: "ViewSettings")
details?.modalPresentationStyle = .custom
details?.transitioningDelegate = self.slideAnimatorLeft
self.present(details!, animated: true, completion: nil)
Related
I am doing a custom transition and if after present animation, device will be rotated and then destinationVC will be dismissed, originVC transform is not correct (not fulfil screen). If there is no device rotation, everything works perfectly fine. Does any one can help me?
Here is my code for present and dismiss animation:
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let originViewController = transitionContext.viewController(forKey: .from),
let destinationViewController = transitionContext.viewController(forKey: .to) else { return }
destinationViewController.view.transform = CGAffineTransform(translationX: 0, y: destinationViewController.view.frame.height)
let duration = transitionDuration(using: transitionContext)
UIView.animate(withDuration: duration, animations: {
destinationViewController.view.transform = CGAffineTransform(translationX: 0, y: 0)
originViewController.view.transform = originViewController.view.transform.scaledBy(x: 0.95, y: 0.95)
originViewController.view.layer.cornerRadius = 8.0
}, completion: { completed in
transitionContext.completeTransition(completed)
})
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let originViewController = transitionContext.viewController(forKey: .from),
let destinationViewController = transitionContext.viewController(forKey: .to) else { return }
let duration = transitionDuration(using: transitionContext)
UIView.animate(withDuration: duration, animations: {
originViewController.view.transform = CGAffineTransform(translationX: 0, y: destinationViewController.view.frame.height)
destinationViewController.view.transform = CGAffineTransform.identity
destinationViewController.view.layer.cornerRadius = 0.0
}, completion: { completed in
transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
})
}
Screens:
Before present animation
After present animation
After device rotation
After dismiss animation
EDIT:
when I add destinationViewController.view.frame = transitionContext.finalFrame(for: destinationViewController) to dismiss animation everything seems works fine but I don't know if this is right way
Add a subView in ViewC1 with leading, top, bottom, trailing constraints.
Working full code
class ViewC1: UIViewController {
#IBAction func presentNow(_ sender: Any) {
let viewc = storyboard!.instantiateViewController(withIdentifier: "ViewC2") as! ViewC2
viewc.transitioningDelegate = viewc
viewc.modalPresentationStyle = .overCurrentContext
present(viewc, animated: true, completion: nil)
}
}
class ViewC2: UIViewController {
let pres = PresentAnimator()
let diss = DismissAnimator()
#IBAction func dissmisNow(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
}
extension ViewC2: UIViewControllerTransitioningDelegate {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return pres
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return diss
}
}
class PresentAnimator: NSObject, UIViewControllerAnimatedTransitioning {
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 1.0
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let originViewController = transitionContext.viewController(forKey: .from),
let destinationViewController = transitionContext.viewController(forKey: .to) else { return }
transitionContext.containerView.addSubview(destinationViewController.view)
destinationViewController.view.frame = transitionContext.containerView.bounds
let originView = originViewController.view.subviews.first
destinationViewController.view.transform = CGAffineTransform(translationX: 0, y: destinationViewController.view.frame.height)
let duration = transitionDuration(using: transitionContext)
UIView.animate(withDuration: duration, animations: {
destinationViewController.view.transform = CGAffineTransform(translationX: 0, y: 0)
originView?.transform = CGAffineTransform(scaleX: 0.95, y: 0.95)
originView?.layer.cornerRadius = 8.0
}, completion: { completed in
transitionContext.completeTransition(completed)
})
}
}
class DismissAnimator: NSObject, UIViewControllerAnimatedTransitioning {
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 1.0
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let originViewController = transitionContext.viewController(forKey: .from),
let destinationViewController = transitionContext.viewController(forKey: .to) else { return }
let originView = destinationViewController.view.subviews.first
let duration = transitionDuration(using: transitionContext)
UIView.animate(withDuration: duration, animations: {
originViewController.view.transform = CGAffineTransform(translationX: 0, y: destinationViewController.view.frame.height)
originView?.transform = CGAffineTransform.identity
originView?.layer.cornerRadius = 0.0
}, completion: { completed in
transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
})
}
}
Update:
or you can override willRotate and didRotate if you dont want to use view.subviews.first
var prevTrans: CGAffineTransform?
override func willRotate(to toInterfaceOrientation: UIInterfaceOrientation, duration: TimeInterval) {
prevTrans = view.transform
view.transform = CGAffineTransform.identity
}
override func didRotate(from fromInterfaceOrientation: UIInterfaceOrientation) {
if let prevTrans = prevTrans {
view.transform = prevTrans
}
}
In my app i want to slide in and out viewcontroller. So for that i am using custom transition but the app crashes.I am not able to find out what the exact issue is.Please do help me out.
Code
class CustomTransition: NSObject, UIViewControllerAnimatedTransitioning,UIViewControllerTransitioningDelegate {
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
// get reference to our fromView, toView and the container view that we should perform the transition in
let container = transitionContext.containerView
let fromView = transitionContext.view(forKey: UITransitionContextViewKey.from)! // the app crashes here saying nil founded
let toView = transitionContext.view(forKey: UITransitionContextViewKey.to)!
let animationDuration = self .transitionDuration(using: transitionContext)
let offScreenRight = CGAffineTransform(translationX: container.frame.width, y: 0)
let offScreenLeft = CGAffineTransform(translationX: -container.frame.width, y: 0)
toView.transform = offScreenRight
// add the both views to our view controller
container.addSubview(toView)
container.addSubview(fromView)
UIView.animate(withDuration: animationDuration, delay: 0.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.8, options: [] , animations: {
fromView.transform = offScreenLeft
toView.transform = CGAffineTransform.identity
}, completion: { finished in
// tell our transitionContext object that we've finished animating
transitionContext.completeTransition(true)
})
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 1
}
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
}
How i am using
let vc = self.getViewControllerFromStoryBoard(storyBoardName: FORGOT_PASSWORD_SB, identifier: FORGOT_PASSWORD_IDENTIFIER) as! ForgotPassword
let a = CustomTransition()
vc.transitioningDelegate = a
vc.modalPresentationStyle = .custom
self.present(vc, animated: true, completion: nil)
The app crashes let fromView = transitionContext.view(forKey: UITransitionContextViewKey.from)! saying that nil founded.
Am i missing out something?
Due to API changes in Apple in iOS 13 update. I was facing same problem Add this line fixed my issue.
vc.modalPresentationStyle = .fullScreen
I have written a custom animation controller to animate my view controller transition. Code as follows :
class PopupAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
var backgroundColorView: UIView!
let duration: TimeInterval = 0.35
var dismiss = false
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
if !dismiss {
animatePresentTransition(using: transitionContext)
} else {
animateDismissTransition(using: transitionContext)
}
}
func animatePresentTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let fromVC = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from),
let toVC = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to) else {
return
}
let containerView = transitionContext.containerView
let finalFrameForVC = transitionContext.finalFrame(for: toVC) // What is this about?
let bounds = UIScreen.main.bounds
let snapshotView = fromVC.view.snapshotView(afterScreenUpdates: false)
snapshotView?.frame = bounds
backgroundColorView = UIView(frame: bounds)
backgroundColorView.backgroundColor = UIColor.black.withAlphaComponent(0)
// Put the window at the bottom of the screen
toVC.view.frame = finalFrameForVC.offsetBy(dx: 0, dy: bounds.size.height)
// Layer out the views
containerView.addSubview(snapshotView!)
containerView.addSubview(backgroundColorView)
containerView.addSubview(toVC.view)
// The animation happens here
UIView.animate(withDuration: duration, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0, options: [], animations: {
self.backgroundColorView.backgroundColor = UIColor.black.withAlphaComponent(0.4)
toVC.view.frame = finalFrameForVC
}, completion: {
finished in
transitionContext.completeTransition(true)
})
}
func animateDismissTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let fromVC = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from) else {
return
}
UIView.animate(withDuration: duration, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0, options: [], animations: {
self.backgroundColorView.backgroundColor = UIColor.black.withAlphaComponent(0.0)
let bounds = UIScreen.main.bounds
fromVC.view.frame = fromVC.view.frame.offsetBy(dx: 0, dy: bounds.size.height)
}, completion: {
finished in
transitionContext.completeTransition(true)
})
}
}
I have implemented the UIViewControllerTransitioningDelegate methods in the controller that will use this transition like so :
extension PopupViewController: UIViewControllerTransitioningDelegate {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
transitionAnimator.dismiss = false
return transitionAnimator
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
transitionAnimator.dismiss = true
return transitionAnimator
}
}
When I'm not using a spring in the animation (eg damping set to 1) it works perfectly. However if I include spring in the animation like in this example the screen flashes black when the controller is dismissed:
Not sure why this is happening. Any ideas on what I might be doing wrong where? Any pointers would be greatly appreciated!
I've been using this code to go a a different view controller.
let details = storyboard?.instantiateViewController(withIdentifier: "ViewMainMurmur")
details?.modalTransitionStyle = .coverVertical
present(details!, animated: true, completion: nil)
And I have created a slideAnimator class to customize my transition
class SlideAnimator: NSObject, UIViewControllerAnimatedTransitioning, UIViewControllerTransitioningDelegate {
let duration = 0.5
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return self
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return duration
}
func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let fromView = transitionContext.view(forKey: UITransitionContextViewKey.from) else {
return
}
guard let toView = transitionContext.view(forKey: UITransitionContextViewKey.to) else {
return
}
let container = transitionContext.containerView
let screenOffUp = CGAffineTransform(translationX: 0, y: -container.frame.height)
let screenOffDown = CGAffineTransform(translationX: 0, y: container.frame.height)
container.addSubview(fromView)
container.addSubview(toView)
toView.transform = screenOffUp
UIView.animate(withDuration: duration, delay: 0.0, usingSpringWithDamping: 0.8, initialSpringVelocity: 0.8, options: [], animations: {
fromView.transform = screenOffDown
fromView.alpha = 0.5
toView.transform = CGAffineTransform.identity
toView.alpha = 1
}) { (success) in
transitionContext.completeTransition(success )
}
}
}
The problem now is that I only know how to use the slideAnimator class when I have a drawn a segue on the storyboard.
How can i use the slideAnimator when i use present() ?
Before calling present, set the presented view controller's transitioningDelegate to your SlideAnimator.
I'm trying to achieve something similar to this:
but with a push segue inside a navigation controller. Is there a way to accomplish this?
I have done this several month ago.
1.Customize your transition. For example this is Push(so as Pop):
class BWFlipTransionPush: NSObject, UIViewControllerAnimatedTransitioning {
func transitionDuration(transitionContext: UIViewControllerContextTransitioning?) -> NSTimeInterval {
return 0.5
}
func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
let fromVC = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey)
let toVC = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey)! // as! UBPasswordLoginViewController
let container = transitionContext.containerView()
container!.addSubview(toVC.view)
container!.bringSubviewToFront(fromVC!.view)
//改变m34
var transfrom = CATransform3DIdentity
transfrom.m34 = -0.002
container!.layer.sublayerTransform = transfrom
//设置anrchPoint 和 position
let initalFrame = transitionContext.initialFrameForViewController(fromVC!)
toVC.view.frame = initalFrame
fromVC!.view.frame = initalFrame
toVC.view.layer.transform = CATransform3DMakeRotation(CGFloat(M_PI_2), 0, 1, 0)
//动画
UIView.animateWithDuration(transitionDuration(transitionContext), delay: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: { () -> Void in
fromVC!.view.layer.transform = CATransform3DMakeRotation(CGFloat(-M_PI_2), 0, 1, 0)
}) { (finished: Bool) -> Void in
container?.bringSubviewToFront(toVC.view)
UIView.animateWithDuration(self.transitionDuration(transitionContext), delay: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: { () -> Void in
toVC.view.layer.transform = CATransform3DIdentity
}) { (finished: Bool) -> Void in
fromVC!.view.layer.transform = CATransform3DIdentity
transitionContext.completeTransition(!transitionContext.transitionWasCancelled())
}
}
}
}
2.Set delegate for your navigation controller like this:
override func viewDidLoad() {
super.viewDidLoad()
navigationController?.delegate = self
}
3.Implement delegate function:
func navigationController(navigationController: UINavigationController, animationControllerForOperation operation: UINavigationControllerOperation, fromViewController fromVC: UIViewController, toViewController toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
switch operation {
case .Pop:
return nil // you should return customized pop
case .Push:
return BWFlipTransionPush()
default:
return nil
}
}
Update
Here is flip pop:
class BWFlipTransionPop: NSObject, UIViewControllerAnimatedTransitioning {
func transitionDuration(transitionContext: UIViewControllerContextTransitioning?) -> NSTimeInterval {
return 0.5
}
func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
let fromVC = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey)! // as! UBPasswordLoginViewController
let toVC = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey)
let container = transitionContext.containerView()
container!.addSubview(toVC!.view)
//改变m34
var transfrom = CATransform3DIdentity
transfrom.m34 = -0.002
container!.layer.sublayerTransform = transfrom
//设置anrchPoint 和 position
let initalFrame = transitionContext.initialFrameForViewController(fromVC)
toVC!.view.frame = initalFrame
toVC!.view.layer.transform = CATransform3DMakeRotation(CGFloat(-M_PI_2), 0, 1, 0)
//动画
UIView.animateWithDuration(transitionDuration(transitionContext), delay: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: { () -> Void in
fromVC.view.layer.transform = CATransform3DMakeRotation(CGFloat(M_PI_2), 0, 1, 0)
}) { (finished: Bool) -> Void in
container?.bringSubviewToFront(toVC!.view)
UIView.animateWithDuration(self.transitionDuration(transitionContext), delay: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: { () -> Void in
toVC!.view.layer.transform = CATransform3DIdentity
}) { (finished: Bool) -> Void in
fromVC.view.layer.transform = CATransform3DIdentity
transitionContext.completeTransition(!transitionContext.transitionWasCancelled())
}
}
}
}