如何在视图控制器之间进行淡入淡出/无过渡答案

【问题标题】：How do I do a Fade/No transition between view controllers如何在视图控制器之间进行淡入淡出/无过渡
【发布时间】：2012-06-09 14:45:48
【问题描述】：

是否可以在 Storyboard 中的视图控制器之间进行淡入和淡出转换。或者没有过渡。

如果可能，代码是什么？

【问题讨论】：

标签： objective-c ios uistoryboardsegue

【解决方案1】：

如果呈现模态视图控制器，您可以指定modalTransitionStyle 或UIModalTransitionStyleCrossDissolve。如果在情节提要中使用 segue 执行此操作，请选择 segue 的属性检查器，并在此处指定过渡样式：

如果以编程方式呈现视图控制器，您可以使用“Cross Dissolve”的“Transition”在情节提要中的视图控制器之间定义模态转场，然后让源视图控制器执行此转场：

[self performSegueWithIdentifier:@"presentSegue" sender:sender];

或者，如果你打电话给presentViewController：

UIViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:@"YourStoryboardID"];
controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:controller animated:YES completion:nil];

在 iOS 7 中，Apple 提供了一项新技术，可为高度自定义的过渡提供丰富而强大的控制。欲了解更多信息，请参阅 WWDC 2013 视频Custom Transitions Using View Controllers。

但是，例如，如果您想在 iOS 7 中自定义推送和弹出动画以淡化，您可以为导航控制器指定 delegate

- (void)viewDidLoad {
    [super viewDidLoad];

    self.navigationController.delegate = self;
}

然后您将实现 animationControllerForOperation 指定用于推送和弹出的动画对象：

- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController
                                  animationControllerForOperation:(UINavigationControllerOperation)operation
                                               fromViewController:(UIViewController*)fromVC
                                                 toViewController:(UIViewController*)toVC
{
    if (operation == UINavigationControllerOperationPush)
        return [[PushAnimator alloc] init];

    if (operation == UINavigationControllerOperationPop)
        return [[PopAnimator alloc] init];

    return nil;
}

您显然必须实现自定义推送和弹出动画，例如：

@interface PushAnimator : NSObject <UIViewControllerAnimatedTransitioning>

@end

@implementation PushAnimator

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5;
}

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    UIViewController* toViewController   = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

    [[transitionContext containerView] addSubview:toViewController.view];

    toViewController.view.alpha = 0.0;

    [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
        toViewController.view.alpha = 1.0;
    } completion:^(BOOL finished) {
        [transitionContext completeTransition:![transitionContext transitionWasCancelled]];
    }];
}

@end

和

@interface PopAnimator : NSObject <UIViewControllerAnimatedTransitioning>

@end

@implementation PopAnimator

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5;
}

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    UIViewController* toViewController   = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];

    [[transitionContext containerView] insertSubview:toViewController.view belowSubview:fromViewController.view];

    [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
        fromViewController.view.alpha = 0.0;
    } completion:^(BOOL finished) {
        [transitionContext completeTransition:![transitionContext transitionWasCancelled]];
    }];
}

@end

自定义模态转换也有类似但略有不同的技术（尽管如果您只是做一个面部，您可能只使用上面讨论的modalTransitionStyle，除非您想要进行其他一些细微的自定义采用）。有关详细信息，请参阅上述Custom Transitions Using View Controllers。

底线，iOS 7 的自定义过渡是一种稍微复杂但非常强大的方法，可以对过渡动画提供巨大的控制。

【讨论】：

感谢您做出如此完整且可复制/粘贴的答案！

【解决方案2】：

为了创建自定义 Segue，创建 UIStoryboard segue 的子类。例如：

// MCFadeSegue.h
#import <UIKit/UIKit.h>

@interface MCFadeSegue : UIStoryboardSegue

@end

// MCFadeSegue.m
#import <QuartzCore/QuartzCore.h>
#import "MCFadeSegue.h"

@implementation MCFadeSegue

- (void)perform
{
  CATransition *transition = [CATransition animation];
  transition.duration = 0.5;
  transition.type = kCATransitionFade;

  [[[[[self sourceViewController] view] window] layer] addAnimation:transition
      forKey:kCATransitionFade];

  [[self sourceViewController]
      presentViewController:[self destinationViewController]
      animated:NO completion:NULL];
}

@end

然后在 MainStoryboard.storyboard 中选择 segue 并设置 Style:Custom 和 Class:MCFadeSegue。

【讨论】：

应该是@ implementation MCFadeSegue 而不是@ implementation MCFadeInSegue 与 .h 相同

【解决方案3】：

在 Swift 中推送/弹出 UIVIewController FadeIn/FadeOut

class FadeInPushSegue: UIStoryboardSegue {

    var animated: Bool = true

    override func perform() {

        if var sourceViewController = self.sourceViewController as? UIViewController, var destinationViewController = self.destinationViewController as? UIViewController {

            var transition: CATransition = CATransition()

            transition.type = kCATransitionFade; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade
            sourceViewController.view.window?.layer.addAnimation(transition, forKey: "kCATransition")
            sourceViewController.navigationController?.pushViewController(destinationViewController, animated: false)


        }
    }

}

class FadeOutPopSegue: UIStoryboardSegue {

    override func perform() {

        if var sourceViewController = self.sourceViewController as? UIViewController, var destinationViewController = self.destinationViewController as? UIViewController {

            var transition: CATransition = CATransition()

            transition.duration = 0.4
            transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
            transition.type = kCATransitionFade; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade

            sourceViewController.view.window?.layer.addAnimation(transition, forKey: "kCATransition")
            sourceViewController.navigationController?.popViewControllerAnimated(false)
        }
    }

}

【讨论】：

【解决方案4】：

试试这个。

    let transition: CATransition = CATransition()
    transition.duration = 0.4
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    transition.type = kCATransitionFade
    self.navigationController!.view.layer.addAnimation(transition, forKey: nil)

    let vc = self.storyboard?.instantiateViewControllerWithIdentifier("vcID") as! My_ViewController
    self.navigationController?.pushViewController(vc, animated: false)

【讨论】：

很好的答案。经过长时间的搜索，它对我有很大帮助。谢谢。

【解决方案5】：

无需创建自定义转场，我将这段代码放在一起呈现视图...

UIViewController *nextView = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"YOUR_VIEW_CONTROLLER_STORYBOARD_NAME"]; nextView.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self.navigationController presentViewController:nextView Animation:YES completion:nil]; //（对于交叉溶解，设置动画：YES。对于无过渡，设置动画：NO。）

希望这对遇到这个问题的人有所帮助！

【讨论】：

【解决方案6】：

带有可选检查的我的 Swift 版本！

    let storyboard = UIStoryboard.init(name: "Main", bundle: nil)
    if let stView = storyboard.instantiateViewControllerWithIdentifier("STVC") as? STVC {
        stView.modalTransitionStyle = UIModalTransitionStyle.CrossDissolve
        self.navigationController?.presentViewController(stView, animated: true, completion: nil)
    }

只需确保在 IB 中设置“视图控制器”的 Storyboard ID

【讨论】：

【解决方案7】：

Swift 3 语法中的Push/Pop UIVIewController FadeIn/FadeOut，基于Eugene Braginets 的answer

class FadeInPushSegue: UIStoryboardSegue {

    var animated: Bool = true

    override func perform() {

        let sourceViewController = self.source
        let destinationViewController = self.destination

        let transition: CATransition = CATransition()

        transition.type = kCATransitionFade; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade
        sourceViewController.view.window?.layer.add(transition, forKey: "kCATransition")
        sourceViewController.navigationController?.pushViewController(destinationViewController, animated: false)

    }

}

class FadeOutPopSegue: UIStoryboardSegue {

    override func perform() {

        let sourceViewController = self.source

        let transition: CATransition = CATransition()

        transition.duration = 0.4
        transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        transition.type = kCATransitionFade; //kCATransitionMoveIn; //, kCATransitionPush, kCATransitionReveal, kCATransitionFade

        sourceViewController.view.window?.layer.add(transition, forKey: "kCATransition")
        _ = sourceViewController.navigationController?.popViewController(animated: false)
    }

}

【讨论】：

【解决方案8】：

斯威夫特 5：

在花费数小时寻找合适的解决方案Rob's 后，其中一个回答了我的所有需求，经过几次调整后，它是完美的。

创建淡入淡出的视图控制器类：

class FadeViewControllerTransition: NSObject, UIViewControllerAnimatedTransitioning {
    
    var fadeOut: Bool = false
    
    func transitionDuration(
        using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.5
    }
    
    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        
        if fadeOut {
            animateFadeOut(using: transitionContext)
            return
        }
        
        let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)!
        transitionContext.containerView.addSubview(toViewController.view)
        toViewController.view.alpha = 0.0
        UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
            toViewController.view.alpha = 1.0
        }, completion: { _ in
            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
        })
    }
    
    func animateFadeOut(using transitionContext: UIViewControllerContextTransitioning) {
        
        let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)!
        let fromViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from)!
        transitionContext.containerView.insertSubview(toViewController.view, belowSubview: fromViewController.view)
        UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
            fromViewController.view.alpha = 0.0
        }, completion: { _ in
            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
        })
    }
}

在导航控制器的第一个视图控制器中：

class MainViewController: UIViewController, UIViewControllerTransitioningDelegate, UINavigationControllerDelegate {

    private let fadeVCTransition = FadeViewControllerTransition()
    
    func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationController.Operation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        fadeVCTransition.fadeOut = (operation == .pop)
        return fadeVCTransition
    }

就是这样。

【讨论】：

如何使用fadeVCTransition 变量和navigationController 函数来执行fade segue？

【解决方案9】：

我所做的是在 Interface Builder 中使用 Storyboard，连接了您需要移入/移出和移回的两个视图控制器（按住 ctrl 并将单击从源视图控制器拖动到目标视图控制器），并更改了 segue 属性。我使用了以下内容：

然后我使用了以下内容：

[self performSegueWithIdentifier:@"showMovieDetailSegue" sender:self];

当你想删除它时，只需从源视图控制器中调用它：

[self dismissViewControllerAnimated:YES completion:nil];

简单快速。

【讨论】：

【解决方案10】：

这让我疯了好几个小时。这些解决方案似乎都不是我想要的，我正在失去理智。最后想出了以下方法，它使用淡出/淡入转换在单个 NSWindow 内交换视图控制器。首先它执行淡出，然后在完成处理程序中，它将窗口的视图设置为新视图并执行淡入。也许有更好的方法来做到这一点，但这是我可以一起破解的最简单的方法.

class CustomSegue : NSStoryboardSegue {
    override func perform() {
        guard let fromController = sourceController as? NSViewController else {
            return;
        }
        guard let toController = destinationController as? NSViewController else {
            return;
        }
        let animationDuration = 0.5;
        NSAnimationContext.runAnimationGroup({
            $0.duration = animationDuration;
            fromController.view.animator().alphaValue = 0.0;
        }, completionHandler: {
            fromController.view.window?.contentViewController = toController;
            toController.view.alphaValue = 0.0;
            NSAnimationContext.runAnimationGroup({
                $0.duration = animationDuration;
                toController.view.animator().alphaValue = 1.0;
            })
        });

    }
}

Apple 文档中缺少示例让我想绞尽脑汁，Objective C 和 Swift 的混合无处不在……呸！

【讨论】：

【解决方案11】：

在没有过渡的情况下呈现：

在情节提要中选择您的转场
在属性检查器中取消选中“动画”

【讨论】：