iOS firebase: FIRAuthUIDelegate.authUI not being called

Question

I am trying to launch google login from AppDelegate.swift and then launch my app\'s main screen upon login success.

I am able to

1. show the g

Answer 1

It must be a problem of reference.

class AppDelegate: UIResponder, UIApplicationDelegate, FIRAuthUIDelegate {
    var window: UIWindow?
    let authUI = FIRAuthUI.defaultAuthUI()

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        FIRApp.configure()

        authUI.delegate = self
        let providers: [FIRAuthProviderUI] = [FIRGoogleAuthUI()]
        authUI.providers = providers

       // show google login button
       let authViewController = authUI.authViewController()
       self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
       self.window?.rootViewController = authViewController
       self.window?.makeKeyAndVisible()
       return true
    }
}

Try this. AppDelegate will hold the reference of authUI and its delegate.