How to use FirebaseUI for Google authentication on iOS in Swift?

Question

I\'m following https://firebase.google.com/docs/auth/ and want to use FirebaseUI (https://github.com/firebase/FirebaseUI-iOS/tree/master/FirebaseUI) for authentication.

Answer 1

Essentially you need to add the below to the root of the plist.

CFBundleURLTypes

    
        CFBundleURLSchemes
        
            com.googleusercontent.apps.your-app-id
        
    

You can get your app id from the RESERVED_CLIENT_ID entry in your GoogleService-Info.plist file.

Next, you will need to implement the openURL app delegate method like this:

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {

    return GIDSignIn.sharedInstance().handle(url, sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as? String, annotation: options[UIApplicationOpenURLOptionsKey.annotation])
}

Check out my answer here for some more details.