在iOS上，我们可以从UIScreen对象访问主UIWindow对象吗? [英] On iOS, can we get to the main UIWindow object from the UIScreen object?

问题描述

说，如果我们已经有 aScreen 指向主屏幕，则

Say, if we already have aScreen that points to the main screen, by

UIScreen *aScreen = [UIScreen mainScreen];

我们可以从该 UIScreen 对象访问主 UIWindow 对象吗?(它们之间是否有任何连接?也就是说，不要使用 [UIApplication sharedApplication] .keyWindow ))

can we get to the main UIWindow object from this UIScreen object? (do they have any connection at all? That is, instead of using [UIApplication sharedApplication].keyWindow)

推荐答案

否.

应用程序有一个窗口列表，通常只有一个.每个窗口都有一个 screen 属性，该属性指示其当前位置.屏幕对象保存有关物理设备的信息.

The application has a list of windows, usually just one. Each window has a screen property that indicates where it's currently located. The screen object holds information about the physical device.

似乎在OSX NSScreen 上受到启发，每个屏幕上没有窗口列表.每个应用都有窗口，每个窗口都知道哪个屏幕位于其中.

It seems inspired on OSX NSScreen, there is no a list of windows per screen. Each app has windows, each window knows in which screen is located.

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