Correct way to get the screen size on iOS, after UIScreen.main deprecation

Question

I always used UIScreen.main.bounds.size to get the screen size on iOS and worked fine.

Now (in iOS 16, I believe) when I try to access the screen size with the "main" instance of UIScreen a warning is displayed:

"main' will be deprecated in a future version of iOS: Use a UIScreen instance found through context instead: i.e, view.window.windowScene.screen

So my question is: What is the correct way to get the screen size? for simplicity let's imagine we are on the iPhone with, consequently, only one screen available. Thank you

Answer 1

extension UIWindow {
    static var current: UIWindow? {
        for scene in UIApplication.shared.connectedScenes {
            guard let windowScene = scene as? UIWindowScene else { continue }
            for window in windowScene.windows {
                if window.isKeyWindow { return window }
            }
        }
        return nil
    }
}


extension UIScreen {
    static var current: UIScreen? {
        UIWindow.current?.screen
    }
}

This way, you can use this anywhere, just like you could with the UIScreen.main.

usage

UIScreen.current?.bounds.size