为什么[UIScreen mainScreen] .bounds]没有返回全屏尺寸？ [英] Why [UIScreen mainScreen].bounds] is not returning full screen size?

问题描述

我有一个在新的iPhone 5视网膜宽屏设备之前创建的应用程序。
现在我正在尝试支持这个高清宽屏。

I have an app that was created prior to the new iPhone 5 retina widescreen device. Now i am trying to support this high definition widescreen.

我调整主ViewController和主窗口XIB文件，以便将它们设置为Autolayout。我可以验证通过IB显示的宽度/高度显示320 x 568。

I adjust the main ViewController and the main window XIB files so that they are set to Autolayout. I can verify that the width/height displayed via the IB shows 320 x 568.

然而，当我在模拟器中运行时，我可以看到高度仍然是480。
用于打印高度（和宽度）的代码位于主视图控制器的viewWillAppear方法中：

However, when I run in simulator, i can see that the height is still 480. The code im using to print the height (and width) is in the main view controller's viewWillAppear method:

[UIScreen mainScreen].bounds]

为什么size.height仍然是480而不是568？

Why is the size.height still 480 instead of 568?

推荐答案

您必须添加iPhone 5启动图像（ [e-mail] ）你的项目。

You have to add the iPhone 5 Launch image ([e-mail]) to your project.

568点高的启动图像告诉iOS以4模式启动您的应用程序。如果您没有此图像，您的应用程序将被视为3.5应用程序。即使它是4兼容。

The 568 point tall launch image tells iOS to launch your app in 4" mode. If you don't have this image, your app is treated as a 3.5" app. Even if it is 4" compatible.

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