Swift ios 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 v

Answer 1

Swift 4

 let storyBoard = UIStoryboard(name: "Your_Storyboard_Name", bundle:Bundle.main)
 self.window = UIWindow(frame: UIScreen.main.bounds)
 let yourVc = storyBoard.instantiateViewController(withIdentifier: "YourIdentifier") as? YourViewController
 if let window = window {
  window.rootViewController = yourVc
   }
 self.window?.makeKeyAndVisible()

Answer 2

Just write this and you are good to go.

let sb = UIStoryboard(name: "Main", bundle: nil)
let VC = sb.instantiateViewController(withIdentifier: "LoginViewController") as! LoginViewController
let navRootView = UINavigationController(rootViewController: VC)
self.present(navRootView, animated: true, completion: nil)

Answer 3

You can use this code when you click the login button :-

let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
var vc = mainStoryboard.instantiateViewControllerWithIdentifier("respectiveIdentifier") as ViewController  
UIApplication.sharedApplication().keyWindow.rootViewController = vc

Answer 4

You can use this bit of code:

let newViewController = self.storyboard?.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController

let customViewControllersArray : NSArray = [newViewController]
self.navigationController?.viewControllers = customViewControllersArray as! [UIViewController]
self.navigationController?.pushViewController(newViewController, animated: true)

Answer 5

Swift 3 Update:-

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

Answer 6

UINavigationController has a viewControllers property, which is a NSArray, And you can replaced it with your own NSArray of view controllrs.

This can be done as show in below sample code.

let newViewController = self.storyboard?.instantiateViewControllerWithIdentifier("YourViewControllerollerID") as! YourViewController

    let customViewControllersArray : NSArray = [newViewController]
    self.navigationController?.viewControllers = customViewControllersArray as! [UIViewController]

And if you want to show this new root view controller you can just call UINavigationController's popToRootViewController() method.

self.navigationController?.popToRootViewControllerAnimated(true)