CODEWITHSUNDEEP
iosswift
David Seek
David Seek

Reputation: 17152

Swift / How to set (and load) a new root view controller

I have a RootVC. It is a SwipeViewController: UINavigationController.

SwipeViewController

Within WelcomeNavigationController, I'm checking a condition. If that condition is true, I want to open the RootVC.

class WelcomeNavigationController: UINavigationController { 

override func viewWillAppear(animated: Bool) {
        backendless.userService.setStayLoggedIn(true)

    if backendless.userService.currentUser != nil {

        print("currentUser != nil")

        dispatch_async(dispatch_get_main_queue()) {

            let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
            appDelegate.window = UIWindow(frame: UIScreen.mainScreen().bounds)
            let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
            let vc : RootVC = storyboard.instantiateViewControllerWithIdentifier("RootVC") as! RootVC
            appDelegate.window?.rootViewController = vc
            appDelegate.window?.makeKeyAndVisible()

        }
    }
}

The print statement is executed and some print statements from my RootVC are executed as well. So in theory the RootVC is loaded. But it is not visible. How can I make my RootVC visible?

Help is very appreciated.

Upvotes: 1

Views: 866

Answers (1)

Giang
Giang

Reputation: 2739

I think you should be add rootVC to current view controller

self.addChildViewController(vc)
vc.view.frame = self.view.frame
self.view.addSubview(vc.view)
vc.didMoveToParentViewController(self)

Upvotes: 2

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