具有清晰背景的Segue Push动画在iOS 7上闪烁 [英] Segue Push Animation with Clear Background is Flashing on iOS 7

问题描述

我有这个简单的故事板：

I have this simple storyboard :

所有这些UIViewController背景都清晰（透明），但我使用以下代码将背景图像作为导航栏和窗口背景：

all of those UIViewController background are clear (transparent), but I put background image as navigation bar and window background using this code :

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{      
    // window background
    self.window.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"window"]];

    // navbar background
    UIImage *navBackgroundImage = [UIImage imageNamed:@"navbar_bg"];
    [[UINavigationBar appearance] setBackgroundImage:navBackgroundImage forBarMetrics:UIBarMetricsDefault];
    [[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];
    return YES;
}

通常此代码适用于iOS 6而不会闪烁，但今天当我尝试在iOS 7上构建它，segue动画（推送）正在闪烁。似乎UIViewController背景并不完全透明。

usually this code works on iOS 6 without flashing, but today when I try to build it on iOS 7, the segue animation (push) is flashing. It seems that the UIViewController background is not fully transparent.

请看一下这个视频： http://www.youtube.com/watch?v=-oZc9SwPJjs

谢谢

推荐答案

我前段时间面临同样的问题，查看具有透明背景的控制器会产生这种效果，实际上并非如此flash，它是在另一个视图上滑动的视图的动画。解决这个问题的唯一方法是删除推送的动画，实际上我认为你不需要这个动画，所以看看这个问题的答案，它显示了如何改变它：

I faced the same problem some time ago, view controllers with transparent background makes this "effect", that actually is not a flash, it is the animation of the view sliding over the other view. The only way to solve this is removing the animation of the push, indeed I don't think you need this animation, so take a look on the answer of this question, it shows how to change it:

更改动画转换

或者看看这个，他有一个示例代码，你可以下载并看看它是如何工作的：

Or take a look on this, he has a sample code, that you can just download and see how it works:

http://www.captechconsulting.com/blog/tyler -tillage / ios-7-tutorial-series-custom-navigation-transitions-more

希望它有所帮助！

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