如何获得iOS中的屏幕宽度和高度？ [英] How to get the screen width and height in iOS?

问题描述

如何在iOS中获得屏幕尺寸？

How can one get the dimensions of the screen in iOS?

目前，我使用：

lCurrentWidth = self.view.frame.size.width;
lCurrentHeight = self.view.frame.size.height;

c> willAnimateRotationToInterfaceOrientation：duration：

in viewWillAppear: and willAnimateRotationToInterfaceOrientation:duration:

第一次获取整个屏幕尺寸。第二次我得到屏幕减去导航栏。

The first time I get the entire screen size. The second time i get the screen minus the nav bar.

推荐答案

的屏幕在iOS？

How can one get the dimensions of the screen in iOS?

您发布的代码的问题是，你依靠视图大小匹配的屏幕，和你所看到的不总是这样的情况。如果你需要屏幕尺寸，你应该看看代表屏幕本身的对象，例如：

The problem with the code that you posted is that you're counting on the view size to match that of the screen, and as you've seen that's not always the case. If you need the screen size, you should look at the object that represents the screen itself, like this:

CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;

拆分视图的更新：在评论中，Dmitry问：

Update for split view: In comments, Dmitry asked:

如何获取分割视图中的屏幕大小？

How can I get the size of the screen in the split view?

上面给出的代码报告了屏幕的大小，即使在分屏模式下。当您使用拆分屏幕模式时，应用程序的窗口会更改。如果上面的代码没有给你你期望的信息，那么像OP，你看错了对象。在这种情况下，你应该看看窗口而不是屏幕，如下：

The code given above reports the size of the screen, even in split screen mode. When you use split screen mode, your app's window changes. If the code above doesn't give you the information you expect, then like the OP, you're looking at the wrong object. In this case, though, you should look at the window instead of the screen, like this:

CGRect windowRect = self.view.window.frame;
CGFloat windowWidth = windowRect.size.width;
CGFloat windowHeight = windowRect.size.height;

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