Google sign in not redirect to application after allow

Question

I'm using this tutorial to implement Sign in with google in app.

1. I installed GoogleSignIn via cocoapods. pod 'GoogleSignIn', '~> 2.4.0'
2. Added GSignIn-Bridging-Header.h with #import <GoogleSignIn/GoogleSignIn.h> inside.

3. Create url types:

4. Create a view with GIDSignInButton class

5. Added code:

   class ViewController: UIViewController, GIDSignInDelegate,    GIDSignInUIDelegate {
   override func viewDidLoad() {
       super.viewDidLoad()
       GIDSignIn.sharedInstance().delegate = self
       GIDSignIn.sharedInstance().uiDelegate = self
       GIDSignIn.sharedInstance().clientID = "KEY" 
    }
   
    func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {
   if let err = error {
      print(error)
   }
   else {
      print(GIDSignIn.sharedInstance().currentUser.profile.name)
      print(GIDSignIn.sharedInstance().currentUser.profile.email)
      self.performSegueWithIdentifier("idSegueContent", sender: self)
     }
   }
   
   
   func signIn(signIn: GIDSignIn!, didDisconnectWithUser user: GIDGoogleUser!, withError error: NSError!) {
   
   }
   }
   

6. But when i click allow

It redirects me to google.com, not to app.

Answer 1

I finally fixed this after a day's work. @ayman Ibrahim was basically, right, but I think that the answer is a bit broader. Different versions of Swift/Objective-C and the Google SDK, call different versions of the canOpenURL method in the AppDelegate. I'm not 100% certain about that, and would appreciate confirmation or correction. Here is the version of that method which worked for me. I am using Google's SDK v. 4.0, targeting iOS 9.1, and using Swift 3.0:

func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
    let checkFB = FBSDKApplicationDelegate.sharedInstance().application(application, open: url, sourceApplication: sourceApplication, annotation: annotation)
    let checkGoogle = GIDSignIn.sharedInstance().handle(url as URL!,sourceApplication: sourceApplication,annotation: annotation)
    return checkGoogle || checkFB
}

I am also using the FBSDK, so ignore that line.