Hi All, Im pretty new to SwiftUI, so i hope you can help me out.

My questions is basically , how can i change view/root efter the user has successfully logged in? or logged out? This is the code i use for the facebook authentication

I tried using @Published and connect it to sceneDelegate, but i had to manually reload the app, before the view changed.

Would really appreciate some help -Nick

struct LoginView : UIViewRepresentable {

    func makeCoordinator() -> LoginView.Coordinator {
        return LoginView.Coordinator()
        //        return LoginView.Coordinator(self.tokenLV)

    }

    func makeUIView(context: UIViewRepresentableContext<LoginView>) -> FBLoginButton {
        let button = FBLoginButton()
        button.permissions = ["email"]
        button.delegate = context.coordinator
        return button
    }

    func updateUIView(_ uiView: FBLoginButton, context: UIViewRepresentableContext<LoginView>) {

    }

    class Coordinator : NSObject, ObservableObject,LoginButtonDelegate{
        @Published var  token = AccessToken.current

        func loginButtonDidLogOut(_ loginButton: FBLoginButton) {

            try! Auth.auth().signOut()
            print("Did logout - From loginButtonDidLogOut")

        }

        func loginButton(_ loginButton: FBLoginButton, didCompleteWith result: LoginManagerLoginResult?, error: Error?) {

            if error != nil  {
                print((error?.localizedDescription)!)
                return
            }

            if AccessToken.current != nil {
                let credential = FacebookAuthProvider.credential(withAccessToken: AccessToken.current!.tokenString)
                Auth.auth().signIn(with: credential) {(res ,  er) in

                    if er != nil{
                        print((er?.localizedDescription)!)
                        return
                    }

                    print("SUCCES! ")

                }
            }
        }
    }

}

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    @ObservedObject var loginScreen = LoginView.Coordinator()

    var window: UIWindow?

    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

        if let windowScene = scene as? UIWindowScene {

            let window = UIWindow(windowScene: windowScene)
            if (self.loginScreen.token != nil){ window.rootViewController = UIHostingController(rootView: ContentView())}

            else {window.rootViewController = UIHostingController(rootView:LoginView().frame(width: 250, height: 50)
            .cornerRadius(10) )}

//           window.rootViewController = UIHostingController(rootView: LoginAndMainControler())
            self.window = window
            window.makeKeyAndVisible()

        }
    }
}

There is a way using a Navigationlink isActive parameter. Paul discusses it here;

https://www.hackingwithswift.com/articles/216/complete-guide-to-navigationview-in-swiftui

.. basically, you bind the isActive to a state variable and toggle to true when you want the navigation to take place. This allows you to trigger it in response to another activity completing.

Thanks for directing me in that direction, i read the articel, but i dont see how i would do it in my scenario. Becuase my loggin is as shown above(The first block of code, not the SceneDelegate). Would it be possible for you to write it out. So i can look at the final code and understand it?

Would really really appreciate it

I would look at "Sign in with Apple" rather then FaceBook. You might want to look at Implementing User Authentication with Sign in with Apple