我有一个基于导航的应用程序，我想改变推送和弹出动画的动画。我该怎么做呢?
编辑2018
这个问题有很多答案，现在已经有很长一段时间了，我重新选择了我认为最相关的答案。如果有人有不同的想法，请在评论中告诉我
当前回答
使用iJordan的答案作为灵感，为什么不简单地在UINavigationController上创建一个Category来在整个应用程序中使用，而不是复制/粘贴这个动画代码的所有地方?
UINavigationController + Animation.h
@interface UINavigationController (Animation)
- (void) pushViewControllerWithFlip:(UIViewController*) controller;
- (void) popViewControllerWithFlip;
@end
UINavigationController+Animation.m
@implementation UINavigationController (Animation)
- (void) pushViewControllerWithFlip:(UIViewController *) controller
{
[UIView animateWithDuration:0.50
animations:^{
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[self pushViewController:controller animated:NO];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:NO];
}];
}
- (void) popViewControllerWithFlip
{
[UIView animateWithDuration:0.5
animations:^{
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:NO];
}];
[self popViewControllerAnimated:NO];
}
@end
然后简单地导入UINavigationController+Animation.h文件并正常调用它:
[self.navigationController pushViewControllerWithFlip:[[NewViewController alloc] init]];
[self.navigationController popViewControllerWithFlip];
其他回答
基于jordanperry为swift 4更新的答案
用于推送UIViewController
let yourVC = self.storyboard?.instantiateViewController(withIdentifier: "yourViewController") as! yourViewController
UIView.animate(withDuration: 0.75, animations: {() -> Void in
UIView.setAnimationCurve(.easeInOut)
self.navigationController?.pushViewController(terms, animated: true)
UIView.setAnimationTransition(.flipFromRight, for: (self.navigationController?.view)!, cache: false)
})
为流行
UIView.animate(withDuration: 0.75, animations: {() -> Void in
UIView.setAnimationCurve(.easeInOut)
UIView.setAnimationTransition(.flipFromLeft, for: (self.navigationController?.view)!, cache: false)
})
navigationController?.popViewController(animated: false)
从示例应用程序中，可以看到这种变化。 https://github.com/mpospese/MPFoldTransition/
#pragma mark - UINavigationController(MPFoldTransition)
@implementation UINavigationController(MPFoldTransition)
//- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
- (void)pushViewController:(UIViewController *)viewController foldStyle:(MPFoldStyle)style
{
[MPFoldTransition transitionFromViewController:[self visibleViewController]
toViewController:viewController
duration:[MPFoldTransition defaultDuration]
style:style
completion:^(BOOL finished) {
[self pushViewController:viewController animated:NO];
}
];
}
- (UIViewController *)popViewControllerWithFoldStyle:(MPFoldStyle)style
{
UIViewController *toController = [[self viewControllers] objectAtIndex:[[self viewControllers] count] - 2];
[MPFoldTransition transitionFromViewController:[self visibleViewController]
toViewController:toController
duration:[MPFoldTransition defaultDuration]
style:style
completion:^(BOOL finished) {
[self popViewControllerAnimated:NO];
}
];
return toController;
}
@Luca Davanzo的答案在Swift 4.2
public extension UINavigationController {
/**
Pop current view controller to previous view controller.
- parameter type: transition animation type.
- parameter duration: transition animation duration.
*/
func pop(transitionType type: CATransitionType = .fade, duration: CFTimeInterval = 0.3) {
self.addTransition(transitionType: type, duration: duration)
self.popViewController(animated: false)
}
/**
Push a new view controller on the view controllers's stack.
- parameter vc: view controller to push.
- parameter type: transition animation type.
- parameter duration: transition animation duration.
*/
func push(viewController vc: UIViewController, transitionType type: CATransitionType = .fade, duration: CFTimeInterval = 0.3) {
self.addTransition(transitionType: type, duration: duration)
self.pushViewController(vc, animated: false)
}
private func addTransition(transitionType type: CATransitionType = .fade, duration: CFTimeInterval = 0.3) {
let transition = CATransition()
transition.duration = duration
transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
transition.type = type
self.view.layer.add(transition, forKey: nil)
}
}
由于这是谷歌上的排名第一的结果，我想我要分享我认为是最理智的方式;也就是使用ios7 +过渡API。我用Swift 3在iOS 10上实现了这个功能。
如果你创建UINavigationController的子类并返回一个符合uiviewcontrolleranimatedtransioning协议的类的实例，那么将这个与UINavigationController如何在两个视图控制器之间动画结合起来是非常简单的。
例如，这是我的UINavigationController子类:
class NavigationController: UINavigationController {
init() {
super.init(nibName: nil, bundle: nil)
delegate = self
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
extension NavigationController: UINavigationControllerDelegate {
public func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return NavigationControllerAnimation(operation: operation)
}
}
你可以看到，我设置了UINavigationControllerDelegate本身，在我的子类的扩展中，我实现了UINavigationControllerDelegate中的方法，它允许你返回一个自定义动画控制器(即，NavigationControllerAnimation)。这个自定义动画控制器将取代库存动画为您。
您可能想知道为什么我通过NavigationControllerAnimation实例的初始化器将操作传递给它。我这样做是为了在NavigationControllerAnimation的uiviewcontrolleranimatedtransiating协议的实现中，我知道操作是什么(即“push”或“pop”)。这有助于知道我应该做什么样的动画。大多数情况下，您希望根据操作执行不同的动画。
其余的都是标准的。在uiviewcontrolleranimatedtransiating协议中实现两个必需的函数，并按你喜欢的方式进行动画:
class NavigationControllerAnimation: NSObject, UIViewControllerAnimatedTransitioning {
let operation: UINavigationControllerOperation
init(operation: UINavigationControllerOperation) {
self.operation = operation
super.init()
}
func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
return 0.3
}
public func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
guard let fromViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from),
let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to) else { return }
let containerView = transitionContext.containerView
if operation == .push {
// do your animation for push
} else if operation == .pop {
// do your animation for pop
}
}
}
重要的是要记住，对于每个不同类型的操作(例如，“push”或“pop”)，to和from视图控制器将是不同的。当你在进行推送操作时，to视图控制器将是被推送的那个。当你在弹出操作中，to视图控制器将是被转换到的那个，而from视图控制器将是被弹出的那个。
另外，to视图控制器必须作为转换上下文中containerView的子视图添加。
当你的动画完成时，你必须调用transitionContext.completeTransition(true)。如果你正在做一个交互式转换，你将不得不动态返回一个Bool到completeTransition(didComplete: Bool)，这取决于转换是否在动画结束时完成。
最后(可选阅读)，您可能想看看我是如何完成我正在进行的转换的。这段代码有点粗糙，我写得很快，所以我不会说它是伟大的动画代码，但它仍然显示了如何做动画部分。
我的转变非常简单;我想模仿UINavigationController通常做的相同的动画，但不是“下一页上方”动画，我想在新视图控制器出现的同时实现旧视图控制器的1:1动画。这使得两个视图控制器看起来好像是固定在一起的。
对于push操作，首先需要在屏幕外的x轴上设置toViewController的视图原点，将其添加为containerView的子视图，通过设置该原点将其动画化到屏幕上。X到0。与此同时，我通过设置fromViewController的原点来使它动画化。X离开屏幕:
toViewController.view.frame = containerView.bounds.offsetBy(dx: containerView.frame.size.width, dy: 0.0)
containerView.addSubview(toViewController.view)
UIView.animate(withDuration: transitionDuration(using: transitionContext),
delay: 0,
options: [ UIViewAnimationOptions.curveEaseOut ],
animations: {
toViewController.view.frame = containerView.bounds
fromViewController.view.frame = containerView.bounds.offsetBy(dx: -containerView.frame.size.width, dy: 0)
},
completion: { (finished) in
transitionContext.completeTransition(true)
})
弹出操作基本上是相反的。添加toViewController作为containerView的子视图，并将fromViewController动画移到右边，就像你从左边动画toViewController一样:
containerView.addSubview(toViewController.view)
UIView.animate(withDuration: transitionDuration(using: transitionContext),
delay: 0,
options: [ UIViewAnimationOptions.curveEaseOut ],
animations: {
fromViewController.view.frame = containerView.bounds.offsetBy(dx: containerView.frame.width, dy: 0)
toViewController.view.frame = containerView.bounds
},
completion: { (finished) in
transitionContext.completeTransition(true)
})
以下是整个swift文件的要点:
https://gist.github.com/alanzeino/603293f9da5cd0b7f6b60dc20bc766be
意识到这是一个老问题。我仍然想张贴这个答案，因为我有一些问题弹出几个viewcontroller与建议的答案。我的解决方案是子类UINavigationController和覆盖所有的弹出和推方法。
翻转导航控制器.h
@interface FlippingNavigationController : UINavigationController
@end
FlippingNavigationController.m：
#import "FlippingNavigationController.h"
#define FLIP_DURATION 0.5
@implementation FlippingNavigationController
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[UIView transitionWithView:self.view
duration:animated?FLIP_DURATION:0
options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionTransitionFlipFromRight
animations:^{ [super pushViewController:viewController
animated:NO]; }
completion:nil];
}
- (UIViewController *)popViewControllerAnimated:(BOOL)animated
{
return [[self popToViewController:[self.viewControllers[self.viewControllers.count - 2]]
animated:animated] lastObject];
}
- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated
{
return [self popToViewController:[self.viewControllers firstObject]
animated:animated];
}
- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
{
__block NSArray* viewControllers = nil;
[UIView transitionWithView:self.view
duration:animated?FLIP_DURATION:0
options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionTransitionFlipFromLeft
animations:^{ viewControllers = [super popToViewController:viewController animated:NO]; }
completion:nil];
return viewControllers;
}
@end
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