_UIApplicationHandleEventFromQueueEvent，_windowServerHitTestWindow中的意外nil窗口 [英] unexpected nil window in _UIApplicationHandleEventFromQueueEvent, _windowServerHitTestWindow

问题描述

我正试图在iPad上的iOS 8中设置边缘滑动手势，但是获取和错误似乎是一个错误。

I am trying to set up an edge swipe gesture in iOS 8 on iPad but getting and error that seems like a bug.

我有以下代码：

    UIScreenEdgePanGestureRecognizer *edgeRecognizer = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(handleRightEdgeSwipe:)];
edgeRecognizer.edges = UIRectEdgeRight;
[self.view addGestureRecognizer:edgeRecognizer];

然后我处理手势：

-(void)handleRightEdgeSwipe:(UIGestureRecognizer*)sender
{
//slide in view code here
}

问题是它不会每次都检测到右边缘滑动。有时它会多次检测到它。

The problem is that it doesn't detect the right edge swipe every time. And sometimes it detects it multiple times.

无论是否检测到它在iPad上滑动右边缘时总是在控制台中显示以下信息：

Whether it detects or not it always shows the following information in the console when swiping the right edge on iPad:

2014-10-07 00：04：40.386 Office日志[1531：500896] _UIApplicationHandleEventFromQueueEvent中的意外nil窗口，_ windowowServerHitTestWindow :; layer =>

2014-10-07 00:04:40.386 Office Log[1531:500896] unexpected nil window in _UIApplicationHandleEventFromQueueEvent, _windowServerHitTestWindow: ; layer = >

此消息的含义是什么？我如何修复它以便始终检测到右边缘滑动？

What does this message mean and how can I fix it so that the right edge swipe is detected consistently?

推荐答案

我认为这是iOS中的一个错误，我可以在iOS 7或更高版本的iPad mini 2和iPad Air上确认，甚至在主屏幕上。

I think it's a bug in iOS, which I can confirm on an iPad mini 2 and an iPad Air on iOS 7 or higher, even on the Home Screen.

在左侧风景（左侧的主页按钮）中，屏幕外部的右边缘手势对我不起作用。在主屏幕上自己测试它。

In "Landscape Left" (Home button on the left) a "Right Edge Gesture" from outside the Screen is not working for me. Test it by your self on the Home Screen.

我在9个月前向Apple报告了一个错误，但注意到了进一步的发生。

I reported a bug to Apple 9 Month ago, but noting further happened.

我在UIWindow初始化时玩了一下，当它比实际大一点时，Gesture工作。当然这是一个可怕的修复。

I played a bit with the UIWindow init and when it is a bit bigger than it really is, the Gesture works. Of course this is a horrible fix.

self.window = [UIWindow new];
self.window.rootViewController = [[UIViewController alloc] init];

// Real Size
CGRect frame = [UIScreen mainScreen].bounds;

// Real Size + 0.000001
self.window.frame = CGRectMake(0, 0, frame.size.width+0.000001, frame.size.height+0.000001);
[self.window makeKeyAndVisible];

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