RootViewController切换过渡动画

在appDelegate中将现有的viewcontroller替换为rootviewcontroller时，有什么方法可以具有转场/动画效果？

您可以将的切换包装rootViewController在过渡动画块中：

[UIView transitionWithView:self.window
                  duration:0.5
                   options:UIViewAnimationOptionTransitionFlipFromLeft
                animations:^{ self.window.rootViewController = newViewController; }
                completion:nil];

我发现了这一点，并且效果很好：

在您的appDelegate中：

- (void)changeRootViewController:(UIViewController*)viewController {

    if (!self.window.rootViewController) {
        self.window.rootViewController = viewController;
        return;
    }

    UIView *snapShot = [self.window snapshotViewAfterScreenUpdates:YES];

    [viewController.view addSubview:snapShot];

    self.window.rootViewController = viewController;

    [UIView animateWithDuration:0.5 animations:^{
        snapShot.layer.opacity = 0;
        snapShot.layer.transform = CATransform3DMakeScale(1.5, 1.5, 1.5);
    } completion:^(BOOL finished) {
        [snapShot removeFromSuperview];
    }];
}

在您的应用中

 if (!app) { app = (AppDelegate *)[[UIApplication sharedApplication] delegate]; }
        [app changeRootViewController:newViewController];

学分：

https://gist.github.com/gimenete/53704124583b5df3b407

我要迅速发布耶稣的答案。它以viewcontroller的标识符作为参数，从情节提要板加载所需的ViewViewController并使用动画更改rootViewController。

Swift 3.0更新：

  func changeRootViewController(with identifier:String!) {
    let storyboard = self.window?.rootViewController?.storyboard
    let desiredViewController = storyboard?.instantiateViewController(withIdentifier: identifier);

    let snapshot:UIView = (self.window?.snapshotView(afterScreenUpdates: true))!
    desiredViewController?.view.addSubview(snapshot);

    self.window?.rootViewController = desiredViewController;

    UIView.animate(withDuration: 0.3, animations: {() in
      snapshot.layer.opacity = 0;
      snapshot.layer.transform = CATransform3DMakeScale(1.5, 1.5, 1.5);
      }, completion: {
        (value: Bool) in
        snapshot.removeFromSuperview();
    });
  }

Swift 2.2更新：

  func changeRootViewControllerWithIdentifier(identifier:String!) {
    let storyboard = self.window?.rootViewController?.storyboard
    let desiredViewController = storyboard?.instantiateViewControllerWithIdentifier(identifier);

    let snapshot:UIView = (self.window?.snapshotViewAfterScreenUpdates(true))!
    desiredViewController?.view.addSubview(snapshot);

    self.window?.rootViewController = desiredViewController;

    UIView.animateWithDuration(0.3, animations: {() in
      snapshot.layer.opacity = 0;
      snapshot.layer.transform = CATransform3DMakeScale(1.5, 1.5, 1.5);
      }, completion: {
        (value: Bool) in
        snapshot.removeFromSuperview();
    });
  }

  class func sharedAppDelegate() -> AppDelegate? {
    return UIApplication.sharedApplication().delegate as? AppDelegate;
  }

之后，您可以从任何地方进行非常简单的使用：

let appDelegate = AppDelegate.sharedAppDelegate()
appDelegate?.changeRootViewControllerWithIdentifier("YourViewControllerID")

Swift 3.0更新

let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.changeRootViewController(with: "listenViewController")

迅捷2

UIView.transitionWithView(self.window!, duration: 0.5, options: UIViewAnimationOptions.TransitionFlipFromLeft, animations: {
  self.window?.rootViewController = anyViewController
}, completion: nil)

斯威夫特3，4，5

UIView.transition(with: self.window!, duration: 0.5, options: UIView.AnimationOptions.transitionFlipFromLeft, animations: {
  self.window?.rootViewController = anyViewController
}, completion: nil)

试试这个。对我来说很好。

BOOL oldState = [UIView areAnimationsEnabled];
[UIView setAnimationsEnabled:NO];
self.window.rootViewController = viewController;
[UIView transitionWithView:self.window duration:0.5 options:transition animations:^{
    //
} completion:^(BOOL finished) {
    [UIView setAnimationsEnabled:oldState];
}];

编辑：

这个比较好。

- (void)setRootViewController:(UIViewController *)viewController
               withTransition:(UIViewAnimationOptions)transition
                   completion:(void (^)(BOOL finished))completion {
    UIViewController *oldViewController = self.window.rootViewController;
    [UIView transitionFromView:oldViewController.view 
                        toView:viewController.view
                      duration:0.5f
                       options:(UIViewAnimationOptions)(transition|UIViewAnimationOptionAllowAnimatedContent|UIViewAnimationOptionLayoutSubviews)
                    completion:^(BOOL finished) {
        self.window.rootViewController = viewController;
        if (completion) {
            completion(finished);
        }
    }];
}

为了以后在应用程序中没有翻转时没有问题，最好从堆栈中清除旧视图

UIViewController *oldController=self.window.rootViewController;

[UIView transitionWithView:self.window
                  duration:0.5
                   options:UIViewAnimationOptionTransitionCrossDissolve
                animations:^{ self.window.rootViewController = nav; }
                completion:^(BOOL finished) {
                    if(oldController!=nil)
                        [oldController.view removeFromSuperview];
                }];

正确的答案是您不需要替换rootViewController窗口上的。而是创建一个自定义UIViewController，将其分配一次，然后一次显示一个子控制器，并在需要时将其替换为动画。您可以使用以下代码作为起点：

斯威夫特3.0

import Foundation
import UIKit

/// Displays a single child controller at a time.
/// Replaces the current child controller optionally with animation.
class FrameViewController: UIViewController {

    private(set) var displayedViewController: UIViewController?

    func display(_ viewController: UIViewController, animated: Bool = false) {

        addChildViewController(viewController)

        let oldViewController = displayedViewController

        view.addSubview(viewController.view)
        viewController.view.layoutIfNeeded()

        let finishDisplay: (Bool) -> Void = {
            [weak self] finished in
            if !finished { return }
            oldViewController?.view.removeFromSuperview()
            oldViewController?.removeFromParentViewController()
            viewController.didMove(toParentViewController: self)
        }

        if (animated) {
            viewController.view.alpha = 0
            UIView.animate(
                withDuration: 0.5,
                animations: { viewController.view.alpha = 1; oldViewController?.view.alpha = 0 },
                completion: finishDisplay
            )
        }
        else {
            finishDisplay(true)
        }

        displayedViewController = viewController
    }

    override var preferredStatusBarStyle: UIStatusBarStyle {
        return displayedViewController?.preferredStatusBarStyle ?? .default
    }
}

您使用它的方式是：

...
let rootController = FrameViewController()
rootController.display(UINavigationController(rootViewController: MyController()))
window.rootViewController = rootController
window.makeKeyAndVisible()
...

上面的示例演示了您可以嵌套UINavigationController在其中FrameViewController，并且效果很好。这种方法为您提供了高级别的自定义和控制。只要FrameViewController.display(_)您想替换窗口上的根控制器，就可以随时调用它，它会为您完成这项工作。

这是swift 3的更新，此方法应该在您的应用程序委托中，并且您可以从任何视图控制器中通过该应用程序委托的共享实例进行调用

func logOutAnimation() {
    let storyBoard = UIStoryboard.init(name: "SignIn", bundle: nil)
    let viewController = storyBoard.instantiateViewController(withIdentifier: "signInVC")
    UIView.transition(with: self.window!, duration: 0.5, options: UIViewAnimationOptions.transitionFlipFromLeft, animations: {
        self.window?.rootViewController = viewController
        self.window?.makeKeyAndVisible()
    }, completion: nil)
}

上述各种问题中缺少的部分是

    self.window?.makeKeyAndVisible()

希望这对某人有帮助。

在AppDelegate.h中：

#define ApplicationDelegate ((AppDelegate *)[UIApplication sharedApplication].delegate)]

在您的控制器中：

[UIView transitionWithView:self.window
                  duration:0.5
                   options:UIViewAnimationOptionTransitionFlipFromLeft
                animations:^{
    ApplicationDelegate.window.rootViewController = newViewController;
    }
                completion:nil];

我提出了在项目中可以正常工作的方式，并为我提供了很好的动画效果。我已经测试了本文中发现的其他建议，但是其中一些建议没有按预期工作。

- (void)transitionToViewController:(UIViewController *)viewController withTransition:(UIViewAnimationOptions)transition completion:(void (^)(BOOL finished))completion {
// Reset new RootViewController to be sure that it have not presented any controllers
[viewController dismissViewControllerAnimated:NO completion:nil];

[UIView transitionWithView:self.window
                  duration:0.5f
                   options:transition
                animations:^{
                    for (UIView *view in self.window.subviews) {
                        [view removeFromSuperview];
                    }
                    [self.window addSubview:viewController.view];

                    self.window.rootViewController = viewController;
                } completion:completion];
}

漂亮的动画效果（通过Swift 4.x测试）：

extension AppDelegate {
   public func present(viewController: UIViewController) {
        guard let window = window else { return }
        UIView.transition(with: window, duration: 0.5, options: .transitionFlipFromLeft, animations: {
            window.rootViewController = viewController
        }, completion: nil)
    }
}

致电

guard let delegate = UIApplication.shared.delegate as? AppDelegate else { return }
delegate.present(viewController: UIViewController())