如何设置 preferredStatusBarStyle

    class ViewController: UIViewController {
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
}

// subclass UINavigationController is required if your ViewController is inside
class NavigationController: UINavigationController {
    override var childViewControllerForStatusBarStyle: UIViewController? {
        return visibleViewController
    }
}

// subclass UITabBarController is required if your ViewController is inside
class TabBarController: UITabBarController {
    override var childViewControllerForStatusBarStyle: UIViewController? {
        return selectedViewController
    }
}

// While using present, preferredStatusBarStyle problably won't work, add these:
vc.modalPresentationStyle = .overCurrentContext
vc.modalPresentationCapturesStatusBarAppearance = true

// Force preferredStatusBarStyle update if needed
self.setNeedsStatusBarAppearanceUpdate()