Enabling Google Authentication

Learn how to integrate and manage authentication using the Google Sign-In option in Firebase.


Google has become one of the most popular social networking platforms in the world, and many users prefer to sign in to other sites using their Google accounts. This is because it provides a practical way for them to manage their accounts on various third-party services. We should, therefore, include a Google sign-in option in every platform and app we create. Fortunately, the support of Firebase and Flutter packages has made it simpler to implement Google authentication.

We start by importing the necessary package into our controller file and adding it to the pubspec.yaml file. Once the package is imported, we can add a function to our GetX controller to handle the Google Sign-In process. The steps for signing in are as follows:

  1. Verify if the device has access to a Google account.  

  2. Obtain the user’s login information and generate an accessToken and idToken.  

  3. Send the tokens so Firebase can create an authenticated account.

Let’s see how the code to enable Google authentication is implemented:

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