Trouble handling Google sign in Swift 3

Question

I am new to iOS and am having trouble with app delegate URL handling in Swift 3, and I could really use some pointers.

The below code works perfectly fine in Swift 2

Answer 1

Try to perform any operations at function "signIn" in AppDelegate.

After Google sends you some data:

func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!,
            withError error: NSError!) {

    if (error == nil) {
        // Perform any operations on signed in user here.
        let userId = user.userID
        // Perform some operation to change the scene.
        // ........

    }
    else {
        print("\(error.localizedDescription)")
    }
}

Maybe the code below can give you some idea:

let myStoryBoard:UIStoryboard = UIStoryboard(name:"Main", bundle:nil)

let protectedPage = myStoryBoard.instantiateViewControllerWithIdentifier("ProtectedPageViewController") as! ProtectedPageViewController

let protectedPageNav = UINavigationController(rootViewController: protectedPage)

let appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

appDelegate.window?.rootViewController = protectedPageNav

??? I reference from YouTube's video "Sign-in with Google Account button. Example in Swift. Video 2", that are provided from "Sergey Kargopolov".

and...

I have a question similar to this and didn't solve it...

Good luck! :)