Let's explain what we did in the Android section:
- We activated authentication using our Google account from the Firebase project console.
- We also installed the required dependencies, from Firebase Auth to Google services.
- After finishing the setup, we gained the ability to create that awesome Google Sign-in special button, and we also gave it an ID for easy access.
- We created references from SignInButton and FirebaseAuth.
Let's now explain what we just did in the iOS section:
- We used the GIDSignButton in order to create the branded Google Sign-in button, and we added it to our ViewController.
- Inside the AppDelegate, we made a couple of configurations so we could retrieve our ClientID that the button needed to connect to ...