UIScreen applicationFrame 在横向应用程序启动时返回不正确的矩形 (iPhone/iPad) [英] UIScreen applicationFrame returning incorrect rectangle on landscape application launch (iPhone/iPad)

问题描述

在横向模式下启动 iPad 应用程序时无法获得正确的边界.我在 Info.plist 文件中设置了正确的键，并且我的视图控制器在横向(和纵向、natch)中正确启动.

Having trouble getting the correct bounds for my iPad application when launching it in landscape mode. I have the proper keys set in my Info.plist file, and my view controllers launch properly in landscape (and portrait, natch).

在我的 applicationDidFinishLaunching: 方法中，我在 3 秒延迟后调用选择器，该方法调用 [[UIScreen mainScreen] applicationFrame]，但是它返回给我一个肖像框架(即高度 > 宽度).

In my applicationDidFinishLaunching: method I'm calling a selector after a 3 second delay, and that method makes a call to [[UIScreen mainScreen] applicationFrame], but it's returning me a portrait frame (ie height > width).

有谁知道如何解决这个问题?对我来说，它闻起来像是一个错误(如果是这样，我会提交雷达)，但如果它是预期行为，它在哪里记录?

Does anyone know how to fix this? It smells like a bug to me (if so I'll file a radar), but if it's intended behaviour, where is it documented?

推荐答案

当您以横向方式拿着 iPad 并启动应用程序时，视图控制器最初会看到纵向视图的边界(即使方向报告横向).然后，视图控制器将在它出现之前收到一条消息以旋转到横向.

When you are holding the iPad in landscape orientation and launch an app, the view controller initially sees bounds for a portrait view (even though orientation reports landscape). The view controller will then get a message to rotate to landscape orientation before it appears.

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