iOS7 UIModalTransitionStyleFlipHorizo​​ntal 过渡后反弹 [英] iOS7 UIModalTransitionStyleFlipHorizontal bounces after transition

问题描述

我正在为 iOS 7 更新我的应用程序，但我发现了一个奇怪的问题.我正在使用 UIModalTransitionStyleFlipHorizo​​ntal 展示一个包装在 UINavigationController 中的 UIViewController.

I'm updating my app for iOS 7 and I discovered a weird problem. I'm presenting a UIViewController wrapped in a UINavigationController with UIModalTransitionStyleFlipHorizontal.

在 iOS 6 中它工作正常，但在 iOS 7 中导航栏在转换后弹跳.这和状态栏有关系吗?我已将主导航栏的半透明设置为 NO.

In iOS 6 it works fine, but in iOS 7 the navigation bar bounces after the transition. Does this have something to do with the status bar? I've set translucency of the main navigation bar to NO.

在Info.plist中，基于视图控制器的状态栏外观设置为NO.

In the Info.plist, View controller-based status bar appearance is set to NO.

这是一个 GIF，显示了一个最小演示应用程序中的问题:

And here is a GIF showing the problem in a minimal demo app:

这是我的代码:

feedNavigationController = [[UINavigationController alloc] init];
feedNavigationController.navigationBar.translucent = NO;

SettingsViewController *settingsVC = [[SettingsViewController alloc] init];

feedNavigationController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[feedNavigationController setViewControllers:[NSArray arrayWithObjects:settingsVC, nil]];

[self presentViewController:feedNavigationController animated:YES completion:nil];

推荐答案

这似乎是一个 UIKit 错误.以下解决方法似乎为我解决了这个问题.

This appears to be a UIKit bug. The following workaround seems to resolve the issue for me.

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    [self.navigationController.navigationBar.layer removeAllAnimations];
}

(将它放在您要转换到的视图控制器中).

(Place this in the view controller you are transitioning to).

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