how to close all view controllers that presented modally inFront of each other with unwind segue in swift?

Question

so I have a main view controller that the view controllers will present inFront of each other and I want when user click the button in the last view controller close all of the presented modally view controllers so I used this code But I didn't get the result

let destination = matchViewController()
let appDelegate:UIApplicationDelegate = UIApplication.shared.delegate!
let initialViewController = destination
let navigationController = UINavigationController(rootViewController: initialViewController)
appDelegate.window??.rootViewController = navigationController
appDelegate.window??.makeKeyAndVisible()

I want to use unwind segue to exit But there is another problem too the last view controller will present many times in many different situations so I just to dismiss all presented modally view controllers in. this situation I rather not using the navigationController But if I had to use it pleas tell me where exactly should I use that ?

Answer 1

Two options:

1. Dismiss all view controllers on the root view controller

    self.view.window?.rootViewController?.dismiss(animated: true, completion: nil) 

2. Dismiss all viewControllers until it has a presentingController

    func dismissAllControllers() { guard let vc = self.presentingViewController else { return } while (vc.presentingViewController != nil) { vc.dismiss(animated: true, completion: nil) } }