如何确保 iOS 13 模态视图控制器呈现正确的状态栏颜色？

Question

With the new iOS 13 view controller changes , view controllers are being presented that don't cover the whole screen. They instead leave a black space at the top. However, the system status bar is not changing colour automatically. When I present a modal view controller, the status bar is staying with now-invisible black text (and a green battery which looks super weird in the middle of nowhere).

How do I make the bar behave in the same way as within Apple's apps, where the bar animates to different colour when a modal popup appears?

I've tried setting modalPresentationCapturesStatusBarAppearance to true on my modal controllers, to no luck.

The bar in my presenting view controller is a UINavigationBar, and is not part of a navigation controller. The presenting VC is its delegate, and I've overridden position(for bar: UIBarPositioning) to return .topAttached.

I've tried presenting the modal with .modalPresentationStyle = .formSheet and without setting .modalPresentationStyle at all. Neither worked.

Broken:

The presenting VC:

Expected Behaviour:

Answer 1

Two things:

The modal view controllers need to have VC.modalPresentationCapturesStatusBarAppearance = false . This is the default but if, like me, you set it to something else, make sure it's false!

You need to ensure that View controller-based status bar appearance in your info.plist is set to YES . I'd messed around with it in an attempt to make my status bar the right colour but having it set to NO was a problem.