Edit status bar style embed viewController Swift - ios

Question

I want to edit the status bar style of my application. However, I'm unable to edit it from my main UIViewController. So I think multiple status bars settings are stacked because of embed UIViewControllers.
Here is how I initiate my navigationController in the didFinishLaunchingWithOptions method:
let navigationVC = CustomNavigationController(rootViewController: MenuInstance)
navigationVC.setNavigationBarHidden(true, animated: false)
Then, I move some views of other UIViewControllers in the menu UIViewController (MenuInstance) for any reason like this:
let scannerVC = ScannerViewController()
override func viewDidLoad() {
super.viewDidLoad()
addChildViewController(scannerVC)
scannerVC.didMove(toParentViewController: self)
}
I tried to create class to set prefersStatusBarHidden = true
class ModalViewViewController: UIViewController {
override var prefersStatusBarHidden: Bool {
get {
return true
}
}
override func viewDidLoad() {
super.viewDidLoad()
setNeedsStatusBarAppearanceUpdate()
}
}
I also created a class for the UINavigationController
class CustomNavigationController: UINavigationController {
override var prefersStatusBarHidden: Bool {
get {
return true
}
}
override func viewDidLoad() {
super.viewDidLoad()
setNeedsStatusBarAppearanceUpdate()
}
}
The goal of trying to remove the status bar is to find where the status bar comes from. I want only one status bar in the MenuInstance UIViewController that I can edit. The fact that some views of UIViewControllers are embed in one UIViewController makes me confused.

Answer 1

If the MenuInstance view controller is the root view controller of the navigation controller, then the MenuInstance's implementation of prefersStatusBarHidden is all that matters. No other view controller's preference is consulted. The "embed" stuff is irrelevant (unless you want to make it relevant).
class MenuInstance : UIViewController {
override var prefersStatusBarHidden: Bool {
get {
return true
}
}
}
Note, however, that this will not work on an iPhone X. You cannot hide the status bar on an iPhone X.