CODEWITHSUNDEEP
iosuiviewcontrolleruinavigationcontrollerswift2
Scorpion
Scorpion

Reputation: 6901

How to reset navigationviewcontroller ios swift

I am having app with Slider where I have provided drop down to switch between users. As soon as app user switch to other user I want to reset entire navigation flow and start it from 1st screen.

For e.g

Screen A -> Screen B -> Screen C -> Screen D -> User opens slider and switch users -> Jump to Screen A (Remove other screen from navigation). We can consider gmail app example here, where we can switch between different accounts and gmail app redirect user to primary inbox.

EDIT :

I am using library for Slider menu available on git.

https://github.com/dekatotoro/SlideMenuControllerSwift

    class AppDelegate: UIResponder, UIApplicationDelegate {

       var window: UIWindow?
       var navigationController: UINavigationController?
       var storyboard: UIStoryboard?
       var leftViewController: LeftSidePanelViewController?
       // var uuid: String?

       func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
           if Utility.getUserStatus() == 0 {
               storyboard = UIStoryboard(name: "Main", bundle: nil)
               let mainViewController = storyboard!.instantiateViewControllerWithIdentifier("LoginViewController") as! LoginViewController

               leftViewController = storyboard!.instantiateViewControllerWithIdentifier("LeftSidePanelViewController") as? LeftSidePanelViewController

               navigationController = UINavigationController(rootViewController: mainViewController)
               UINavigationBar.appearance().tintColor = UIColor.whiteColor()
               leftViewController!.mainViewController = navigationController

let slideMenuController = ExSlideMenuController(mainViewController:navigationController!, leftMenuViewController: leftViewController!)
               slideMenuController.automaticallyAdjustsScrollViewInsets = true
               slideMenuController.delegate = mainViewController

self.window?.backgroundColor = UIColor(red: 236.0, green: 238.0, blue: 241.0, alpha: 1.0)
               self.window?.rootViewController = slideMenuController
               self.window?.makeKeyAndVisible()
               Utility.setUUID(UIDevice.currentDevice().identifierForVendor!.UUIDString)
           } else {
               storyboard = UIStoryboard(name: "Main", bundle: nil)
               let mainViewController = storyboard!.instantiateViewControllerWithIdentifier("HomeViewController") as! HomeViewController
               leftViewController = storyboard!.instantiateViewControllerWithIdentifier("LeftSidePanelViewController") as? LeftSidePanelViewController
               navigationController = UINavigationController(rootViewController: mainViewController)
               UINavigationBar.appearance().tintColor = UIColor.whiteColor()
               leftViewController!.mainViewController = navigationController

let slideMenuController = ExSlideMenuController(mainViewController:navigationController!, leftMenuViewController: leftViewController!)
               slideMenuController.automaticallyAdjustsScrollViewInsets = true
               slideMenuController.delegate = mainViewController

self.window?.backgroundColor = UIColor(red: 236.0, green: 238.0, blue: 241.0, alpha: 1.0)
               self.window?.rootViewController = slideMenuController
               self.window?.makeKeyAndVisible()
           }
           return true
       }
    }

I have tried different solutions for this but nothing seems to be working.

var alreadyPushed = false
           //Check if the view was already pushed
           if let viewControllers = self.navigationController?.viewControllers {
               for viewController in viewControllers {
                   if let viewController = viewController as? HomeViewController {
                       self.navigationController?.popToViewController(viewController, animated: true);
                       print(" Push Your Controller")
                       alreadyPushed = true
                       break
                   }
               }
           }

           if alreadyPushed == false {
               print("Pushing...")
               let YourControllerObject = self.storyboard?.instantiateViewControllerWithIdentifier("HomeViewController") as! HomeViewController
               self.navigationController?.presentViewController(YourControllerObject, animated: true, completion: nil)
// HERE also tried pushViewController but that was also not working..
               self.navigationController?.dismissViewControllerAnimated(false, completion: nil)

           }

Solution 2:-

Also tried self.navigationController?.viewController.removeAll() and then push/present the HomeView but that is also not working.

Anyone having any suggestion or tips to solve this.

Upvotes: 3

Views: 7772

Answers (4)

iSashok
iSashok

Reputation: 2446

You can use for it

self.navigationController?.popToRootViewControllerAnimated(true)

or make some hack with navigation stack

var viewControllers = self.navigationController?.viewControllers
let firstViewCtr = viewControllers?.first;
viewControllers?.removeAll()
viewControllers?.insert(firstViewCtr!, atIndex: 0)
self.navigationController?.viewControllers = viewControllers!

Upvotes: 2

Leo Paim
Leo Paim

Reputation: 500

For Swift 3, use the following code:

self?.navigationController?.popToRootViewController(animated: true)

Upvotes: 1

Paramasivan Samuttiram
Paramasivan Samuttiram

Reputation: 3738

Instead of reverting back the navigation, Why not you can set rootViewController for Window again like below?

SharedAppDelegate.window?.rootViewController = MainStoryboard.instantiateViewControllerWithIdentifier("HomeNavigationController")

Upvotes: 1

Masterfego
Masterfego

Reputation: 2678

A very fast way:

// Put this line in the UIViewController where you want to reset navigation
self.navigationController?.viewControllers = [self]

You will erase the view controller stack and reset the navigation.

Upvotes: 7

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