How to set a new root view controller

Question

I wonder if its possible to set a new root VC?

My app gets init with a uinavigation controller that has a table view to be the root VC.

Then from the table view I am running another segue to a login window (present modally) If you then login you end up in the red VC/account page. What I want to do now is to set the red VC to be the new root VC of the app, and remove all underlying VC's. So that I can show a menu button/icon instead of a "Back" button

I have found this but I dont understand how to use it:

let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: NSBundle.mainBundle())         let yourViewController: ViewController = storyboard.instantiateViewControllerWithIdentifier("respectiveIdentifier") as! ViewController          let navigationController = self.window?.rootViewController as! UINavigationController         navigationController.setViewControllers([yourViewController], animated: true) 

But I cannot get it to work. So is it possible to make the red vc in the picture act as the new root VC.

Answer 1

Swift 4.2

May be you should try this

let mainStoryBoard = UIStoryboard(name: "Main", bundle: nil) let redViewController = mainStoryBoard.instantiateViewController(withIdentifier: "respectiveIdentifier") as! ViewController let appDelegate = UIApplication.shared.delegate as! AppDelegate appDelegate.window?.rootViewController = redViewController 

Answer 2

Swift 4, 5, 5.1

let story = UIStoryboard(name: "Main", bundle:nil) let vc = story.instantiateViewController(withIdentifier: "NewViewController") as! NewViewController UIApplication.shared.windows.first?.rootViewController = vc UIApplication.shared.windows.first?.makeKeyAndVisible()