Swift return to preview UINavigationController - ios

Question

I have VC like a "Something went wrong". This VC i created like a separately VC(without storyboard) and i want to show it where i want. But in the "Something went wrong" View Controller i have a button "refresh". When a user click to this button he must to go back.
When i have some problem with parsing Json or something like this, i call Something went wrong" View Controller like this:
let navController = UINavigationController()
navController.pushViewController(SomethingWentWorngVC(nibName: "SomethingWentWorngView", bundle: nil), animated: false)
window?.rootViewController = navController
window?.makeKeyAndVisible()
also i have extension for getting window
extension UIViewController {
var appDelegate: AppDelegate {
return UIApplication.shared.delegate as! AppDelegate
}
var sceneDelegate: SceneDelegate? {
guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
let delegate = windowScene.delegate as? SceneDelegate else { return nil }
return delegate
}
}
extension UIViewController {
var window: UIWindow? {
if #available(iOS 13, *) {
guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
let delegate = windowScene.delegate as? SceneDelegate, let window = delegate.window else { return nil }
return window
}
guard let delegate = UIApplication.shared.delegate as? AppDelegate, let window = delegate.window else { return nil }
return window
}
}
in the SomethingWentWorngVC i have button for go to back
#IBAction func refreshAction(_ sender: Any) {
self.navigationController?.popToRootViewController(animated: false)
}
but it doesnt work

Answer 1

in this alternate way you can use this , initially u need to create the common code in appdelegate using tag, then you need to do the addsubview to window for example,
for show
func showWentWrongScreen(){
let getVC = SomethingWentWorngVC
if let getWindow = self.window {
getVC.view.tag = 501
getVC.view.frame = getWindow.bounds
getWindow.addSubview(getVC.view)
}
}
for remove
func removeWentWrongScreen(){
if let getWindow = self.window, let getWentWrongView = getWindow.viewWithTag(501){
getWentWrongView.removeFromSuperview()
}
}
now you can use where u need