我正在使用 presentViewController 来展示新屏幕
let dashboardWorkout = DashboardWorkoutViewController()
presentViewController(dashboardWorkout, animated: true, completion: nil)
这会从下到上呈现新屏幕，但我希望它从右到左呈现而不使用UINavigationController。
我使用的是 Xib 而不是故事板，我该怎么做呢？
【问题讨论】：
您使用的是xib 还是storyboard 都没有关系。通常，当您将视图控制器推送到演示者的UINavigiationController 时，会使用从右到左的过渡。
更新
新增计时功能kCAMediaTimingFunctionEaseInEaseOut
Sample project 已将 Swift 4 实现添加到 GitHub
Swift 3 和 4.2
let transition = CATransition()
transition.duration = 0.5
transition.type = CATransitionType.push
transition.subtype = CATransitionSubtype.fromRight
transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
view.window!.layer.add(transition, forKey: kCATransition)
present(dashboardWorkout, animated: false, completion: nil)
ObjC
CATransition *transition = [[CATransition alloc] init];
transition.duration = 0.5;
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromRight;
[transition setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[self.view.window.layer addAnimation:transition forKey:kCATransition];
[self presentViewController:dashboardWorkout animated:false completion:nil];
Swift 2.x
let transition = CATransition()
transition.duration = 0.5
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromRight
transition.timingFunction = CAMediaTimingFunction(name:kCAMediaTimingFunctionEaseInEaseOut)
view.window!.layer.addAnimation(transition, forKey: kCATransition)
presentViewController(dashboardWorkout, animated: false, completion: nil)
似乎presentViewController 方法中的animated 参数在这种自定义转换的情况下并不重要。它可以是任何值，true 或 false。
【讨论】：
出席/解雇的完整代码，Swift 3
extension UIViewController {
func presentDetail(_ viewControllerToPresent: UIViewController) {
let transition = CATransition()
transition.duration = 0.25
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromRight
self.view.window!.layer.add(transition, forKey: kCATransition)
present(viewControllerToPresent, animated: false)
}
func dismissDetail() {
let transition = CATransition()
transition.duration = 0.25
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromLeft
self.view.window!.layer.add(transition, forKey: kCATransition)
dismiss(animated: false)
}
}
【讨论】：
阅读所有答案，但看不到正确的解决方案。这样做的正确方法是为呈现的 VC 委托制作自定义 UIViewControllerAnimatedTransitioning。
因此它假设执行更多步骤，但结果更可定制并且没有一些副作用，例如从视图中移动到呈现的视图。
所以，假设你有一些 ViewController，并且有一个呈现的方法
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 和 dismissTransition 用于为您的视图控制器设置动画。
所以你采用你的 ViewController 到UIViewControllerTransitioningDelegate:
extension ViewController: UIViewControllerTransitioningDelegate {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return presentTransition
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return dismissTransition
}
}
所以最后一步是创建自定义过渡：
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)
})
}
}
在代码视图控制器呈现在当前上下文中时，您可以从该点进行自定义。此外，您可能会看到自定义 UIPresentationController 也很有用（使用 UIViewControllerTransitioningDelegate 传递）
【讨论】：
您也可以使用自定义转场。
斯威夫特 5
class SegueFromRight: UIStoryboardSegue {
override func perform() {
let src = self.source
let dst = self.destination
src.view.superview?.insertSubview(dst.view, aboveSubview: src.view)
dst.view.transform = CGAffineTransform(translationX: src.view.frame.size.width, y: 0)
UIView.animate(withDuration: 0.25,
delay: 0.0,
options: UIView.AnimationOptions.curveEaseInOut,
animations: {
dst.view.transform = CGAffineTransform(translationX: 0, y: 0)
},
completion: { finished in
src.present(dst, animated: false, completion: nil)
})
}
}
【讨论】：
试试这个，
let animation = CATransition()
animation.duration = 0.5
animation.type = kCATransitionPush
animation.subtype = kCATransitionFromRight
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
vc.view.layer.addAnimation(animation, forKey: "SwitchToView")
self.presentViewController(vc, animated: false, completion: nil)
这里 vc 是视图控制器，dashboardWorkout 在你的情况下。
【讨论】：
导入 UIKit 并为 UIViewController 创建一个扩展：
extension UIViewController {
func transitionVc(vc: UIViewController, duration: CFTimeInterval, type: CATransitionSubtype) {
let customVcTransition = vc
let transition = CATransition()
transition.duration = duration
transition.type = CATransitionType.push
transition.subtype = type
transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
view.window!.layer.add(transition, forKey: kCATransition)
present(customVcTransition, animated: false, completion: nil)
}}
simlpy 调用后：
let vC = YourViewController()
transitionVc(vc: vC, duration: 0.5, type: .fromRight)
从左到右：
let vC = YourViewController()
transitionVc(vc: vC, duration: 0.5, type: .fromleft)
您可以使用您喜欢的持续时间更改持续时间...
【讨论】：
class AA: UIViewController
func goToBB {
let bb = .. instantiateViewcontroller, storyboard etc .. as! AlreadyOnboardLogin
let tr = CATransition()
tr.duration = 0.25
tr.type = kCATransitionMoveIn // use "MoveIn" here
tr.subtype = kCATransitionFromRight
view.window!.layer.add(tr, forKey: kCATransition)
present(bb, animated: false)
bb.delegate, etc = set any other needed values
}
然后……
func dismissingBB() {
let tr = CATransition()
tr.duration = 0.25
tr.type = kCATransitionReveal // use "Reveal" here
tr.subtype = kCATransitionFromLeft
view.window!.layer.add(tr, forKey: kCATransition)
dismiss(self) .. or dismiss(bb), or whatever
}
CATransition 并不是真正适合做这项工作的。
请注意，您会得到烦人的交叉淡入淡出到黑色，不幸的是这会破坏效果。
许多开发者（比如我）真的不喜欢使用NavigationController。通常，在您进行时以临时方式呈现会更加灵活，特别是对于不寻常和复杂的应用程序。但是，“添加”一个导航控制器并不难。
或者，如果你愿意的话
在didFinishLaunchingWithOptions 中很容易在代码中添加导航控制器
您甚至不需要将变量保存在任何地方，因为 .navigationController 始终可以作为属性使用 - 很简单。
真的，一旦你有了一个导航控制器，在屏幕之间进行转换就很简单了，
let nextScreen = instantiateViewController etc as! NextScreen
navigationController?
.pushViewController(nextScreen, animated: true)
你可以pop。
（旧的以较低的速度滑下，而新的滑上。）
通常令人惊讶的是，您通常必须努力进行完整的自定义过渡。
即使您只想要最简单、最常见的移过/移出过渡，您也必须进行完整的自定义过渡。
幸运的是，为此 QA 有一些剪切和粘贴样板代码...https://stackoverflow.com/a/48081504/294884。 2018 年新年快乐！
【讨论】：
试试这个。
let transition: CATransition = CATransition()
transition.duration = 0.3
transition.type = kCATransitionReveal
transition.subtype = kCATransitionFromLeft
self.view.window!.layer.addAnimation(transition, forKey: nil)
self.dismissViewControllerAnimated(false, completion: nil)
【讨论】：
let transition = CATransition()
transition.duration = 0.25
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromLeft
transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
tabBarController?.view.layer.add(transition, forKey: kCATransition)
self.navigationController?.popToRootViewController(animated: true)
【讨论】：
使用 Swift 在 iOS 中从右到左显示视图控制器
func FrkTransition()
{
let transition = CATransition()
transition.duration = 2
transition.type = kCATransitionPush
transitioningLayer.add(transition,forKey: "transition")
// Transition to "blue" state
transitioningLayer.backgroundColor = UIColor.blue.cgColor
transitioningLayer.string = "Blue"
}
参考： [https://developer.apple.com/documentation/quartzcore/catransition][1]
【讨论】：
// Never Easy than this before :)
// you just need to add a Static function for navigation transition
// This Code is recommended for the view controller.
public class CustomNavigation: UIViewController {
public override func loadView() {
super.loadView();
}
public override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
public override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true);
}
public static func segueNavToLeft(view: UIView) {
let transition = CATransition()
transition.duration = 0.3
transition.type = CATransitionType.push
transition.subtype = CATransitionSubtype.fromLeft
transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
view.window!.layer.add(transition, forKey: kCATransition)
}
public static func segueNavToRight(view: UIView) {
let transition = CATransition()
transition.duration = 0.3
transition.type = CATransitionType.push
transition.subtype = CATransitionSubtype.fromRight
transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
view.window!.layer.add(transition, forKey: kCATransition)
}
}
// simply call in your viewcontroller:
func moveToRight() {
CustomNavigation.segueNavToRight(view: view)
let controller = self.storyboard?.instantiateViewController(withIdentifier: "id") as! YourViewController
let navigationController = UINavigationController(rootViewController: YourViewController)
navigationController.modalPresentationStyle = .fullScreen
self.present(navigationController, animated: false, completion: nil)
}
func moveToLeft() {
CustomNavigation.segueNavToLeft(view: view)
self.dismiss(animated: true, completion: nil)
}
【讨论】：
class RightToLeftPresentationController: UIPresentationController {
lazy var blackView: UIView = {
let view = UIView()
view.frame = self.containerView?.bounds ?? .zero
view.backgroundColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 0.5)
return view
}()
// MARK:- Presentation
override func presentationTransitionWillBegin() {
self.containerView?.addSubview(blackView)
self.presentingViewController.transitionCoordinator?
.animate(alongsideTransition: { _ in
self.blackView.alpha = 0.5
}, completion: nil)
}
// MARK:- Dismiss
override func dismissalTransitionWillBegin() {
UIView.animate(withDuration: 0.25) {
self.blackView.alpha = 0
}
}
override func dismissalTransitionDidEnd(_ completed: Bool) {
if completed {
blackView.removeFromSuperview()
}
}
}
class RightToLeftPresentationSegue: UIStoryboardSegue {
override func perform() {
destination.modalPresentationStyle = .custom
destination.transitioningDelegate = self
source.present(destination, animated: true)
}
}
extension RightToLeftPresentationSegue: UIViewControllerTransitioningDelegate {
func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
let controller = RightToLeftPresentationController(presentedViewController: presented, presenting: presenting)
presented.transitioningDelegate = controller
return controller
}
}
extension RightToLeftPresentationController: UIViewControllerTransitioningDelegate {
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return RightToLeftTransition()
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return LeftToRightTransition()
}
}
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)
})
}
}
【讨论】：
如果您想保留 Apple 的经典动画，而没有看到您使用 CATransition() 看到的“黑色”过渡，我有一个更好的解决方案对我有用。只需使用 popToViewController 方法。
你可以在里面寻找你需要的viewController
self.navigationController.viewControllers // Array of VC that contains all VC of current stack
你可以通过搜索它的restoreIdentifier来找到你需要的viewController。
小心：例如，如果您正在浏览 3 个视图控制器，当到达最后一个时，您想要弹出第一个。在这种情况下，您将失去对有效 SECOND 视图控制器的引用，因为 popToViewController 已经覆盖了它。顺便说一句，有一个解决方案：您可以在 popToViewcontroller 之前轻松保存，稍后您将需要该 VC。它对我很有效。
【讨论】：
这对我有用：
self.navigationController?.pushViewController(controller, animated: true)
【讨论】：