blocks|key|2666066|text|这个is...not是做你想做的事的好方法。不要依赖特定的窗口是“第一个”窗口，也不要依赖于某个特定的视图是“最后”的子视图。这些东西太容易改变了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2666067|在您想要使用的窗口和视图上创建IBOutlets，将它们挂在.XIB文件中，并直接引用它们。|2666068|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

This is...not a good way to do what you want. Don’t rely on a particular window being the “first” window, and don’t rely on a a particular view being the “last” subview. Those things are too subject to change.

Create IBOutlets on the windows and views you want to use, hook them up in the .XIB file, and refer to them directly.

blocks|key|2666087|text|这应该是你的目的--|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2666088|AppDelegate+*appD=(AppDelegate+*)[UIApplication+sharedApplication代表]；|2666089|appD.window附件视图:viewFullScreenToolbar；appD.window带来bringSubviewToFront:viewFullScreenToolbar；|2666090|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

This should serve your purpose--

AppDelegate *appD=(AppDelegate *)[[UIApplication sharedApplication] delegate];

[appD.window addSubview:viewFullScreenToolbar];
[appD.window bringSubviewToFront:viewFullScreenToolbar];

blocks|key|912991|text|您是否试图向全屏MPMoviePlayerController视图添加一个子视图？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|912992|是。您确实需要以类似于您所列出的方式添加子视图，因为MPMoviePlayerController没有为全屏视频视图提供挂钩。您的问题可能与此子视图没有得到旋转回调有关。|ordered-list-item|912993|不是的。如果您拥有这个videoView，那么就不应该使用UIWindow访问视图。您应该通过它的视图控制器访问它。然后，当您将工具栏添加为子视图时，它将收到旋转回调。|912994|如果你的情况是第一，我可以帮助进一步，但想先检查。|912995|更新|offset|length|style|BOLD|912996|如果要向MPMoviePlayerController全屏视图添加覆盖视图，则有三个选项：|912997|别。|912998|基于MoviePlayer编写自己的AVPlayer。|912999|使用以下示例中所示的hack：MoviePlayerFullscreenOverlay|913000|向MPMoviePlayerController全屏视图添加覆盖视图并不简单，因为MPMoviePlayerController+API无法访问全屏视图。它需要通过窗口访问视图，添加子视图，然后手动处理旋转回调。$%25%5E*疼痛。|913001|请不要在任何其他情况下使用这种方法。|913002|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/soleares/MoviePlayerFullscreenOverlay^0|0|0|0|0|0|2|0|0|0|0|F|S|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|19|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|1A|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|1B|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1C|8|@$K|1D|L|1E|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1F|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1G|8|@]|9|@]|A|$]]|$1|S|3|T|5|D|7|1H|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|1I|8|@]|9|@$K|1J|L|1K|1|1L]]|A|$]]|$1|W|3|X|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1N|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]]]

Are you trying to add a subview to the fullscreen MPMoviePlayerController view?

<ol>
<li>Yes. You do need to add the subview in a hacky way (similar to what you list) because MPMoviePlayerController provides no hooks to the fullscreen video view. Your issue is likely related to this subview not getting rotation callbacks.</li>
<li>No. If you own this videoView then you shouldn't access the view using UIWindow. You should access it through its view controller. Then when you add your toolbar as a subview it will receive rotation callbacks. </li>
</ol>

If you situation is #1 I can help further but want to check first.

[Update]

If you want add an overlay view to the MPMoviePlayerController fullscreen view you have three options:

<ol>
<li>Don't.</li>
<li>Write your own MoviePlayer based on AVPlayer.</li>
<li>Use the hack shown in the following sample: <a href="https://github.com/soleares/MoviePlayerFullscreenOverlay" rel="nofollow">MoviePlayerFullscreenOverlay</a></li>
</ol>

Adding an overlay view to the MPMoviePlayerController fullscreen view is not straightforward because the fullscreen view is not accessible from the MPMoviePlayerController API. It requires accessing the view through the window, adding the subview and then manually handling the rotation callbacks. Pain in the $%^*.

Please do not use this approach for any other situation.

blocks|key|494518|text|一旦你找到答案，这似乎是显而易见的。所以，我所要做的就是注册方向更改通知。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|494519|NSNotificationCenter*+center+=+[NSNotificationCenter+defaultCenter];

[center+addObserver:self+selector:@selector(ChangeOrientationIfFullScreen:)+name:UIApplicationDidChangeStatusBarOrientationNotification+object:nil];|code-block|syntax|javascript|494520|在收到通知时调用的方法中，我必须为每个方向的更改手动设置子视图的框架。虽然有点开销，但最终在屏幕上实现了平稳的过渡。|494521|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Its seems so obvious once you find the answer. So, all I had to do was register for the orientation change notification.

<pre><code>NSNotificationCenter* center = [NSNotificationCenter defaultCenter];

[center addObserver:self selector:@selector(ChangeOrientationIfFullScreen:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
</code></pre>

And in the method called when the notification is received, I had to set the frames of the subviews manually for each orientation change. It was a bit of overhead but finally achieved a smooth transition on the screen.

I am using this code 

<pre><code>UIWindow *window = [[UIApplication sharedApplication].windows objectAtIndex:0];
UIView * videoView = [[window subviews] lastObject];
[videoView addSubview:viewFullScreenToolbar];
</code></pre>

to add a view on topmost view to play video on fullscreen. When the fullscreen button is pressed, this code executes and presents a fullscreen video. But when fullscreen is closed and then pressed again, the viewFullScreenToolbar is not visible although the video is playing correctly in fullscreen. Plus the problem is only in landscape mode, it works good in portrait mode.

View not visible on UIWindow when added for the second time

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在使用这个代码UIWindow *window = [[UIApplication sharedApplication].windows objectAtIndex:0];UIView * videoView = [[window subviews] lastObject];[videoView addSubvie...

问第二次添加时在UIWindow上不可见的视图
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问第二次添加时在UIWindow上不可见的视图EN