iOS5：播放Youtube视频的模态UIViewController中的UIWebView上的异常 [英] iOS5: Exception on UIWebView in modal UIViewController playing Youtube video

问题描述

更新：iOS 6测试版1不再出现

UPDATE: No longer occurs on iOS 6 beta 1

我目前正致力于使用新iOS调整现有的iOS 4应用程序5 SDK。
我在模拟视图控制器中呈现UI视图时发现了新的崩溃，该控制器读取Youtube视频。

I am currently working on adapting an existing iOS 4 application with the new iOS 5 SDK. I found a new crash when presenting a UIWebView in a modal view controller that reads a Youtube video.

开始阅读视频很好，但是当我尝试将其设置为全屏，我得到以下异常：

Starting to read the video is fine, but when I try to set it in full screen, I get the following exception :

Exception: UIViewControllerHierarchyInconsistency,
child view controller:<UIViewController: 0x6aef180> 
should have parent view controller:<WebViewController: 0x6a706c0> 
but requested parent is:<MPInlineVideoViewController: 0x6ae5d40>

以下是我在主视图控制器中实现和显示模态视图控制器的方法：

Here is how I instanciate and present my modal view controller in my main view controller :

- (IBAction)buttonReleased:(id)sender
{
    WebViewController *webVC = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:[NSBundle mainBundle]];
    webVC.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    webVC.modalPresentationStyle = UIModalPresentationPageSheet;
    [self presentModalViewController:webVC animated:YES];
}

我将UIModalPresentationPageSheet用作modalPresentationStyle，当我将此值设置为UIModalPresentationFullScreen时，错误不再发生。

I use the UIModalPresentationPageSheet as modalPresentationStyle, when I set this value to UIModalPresentationFullScreen, the error no longer occurs.

在我的模态WebViewController中，这是我加载Youtube视频的方式：

In my modal WebViewController, here is how I load my Youtube video :

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.youtube.com/watch?v=bDlm3eLRut0"]]];
}

有关此问题的任何想法？
我可以提供完整的示例代码，以便在需要时隔离此崩溃。

Any ideas on this problem ? I can provide a full sample code that isolates this crash if needed.

谢谢！

推荐答案

我们通过基本实现我们自己的模态视图转换来解决这个问题。这实际上很容易做到;我在大约4个小时内构建它。

We resolved this by basically implementing our own modal view transitions. It was actually pretty easy to do; I built it in about 4 hours.

如果你以全屏模式呈现它，你也可以避免崩溃。表单或页面表格是导致崩溃的原因。

You can also avoid the crash if you are presenting it modally full screen. Sheets, either form sheets or page sheets, are the causes of the crash.

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