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Last updated onMar 11, 2024
Last updated onMar 11, 2024
Envision has a swift, one-click 'Google Sign In' button that simplifies your user login process in your Flutter app.
In this blog, we will explore how to integrate Google Sign-In, a popular feature that enhances user experience, into our Flutter applications.
Use the DhiWise Flutter builder to easily integrate Google Sign-in into your excellent Flutter app.
So grab a coffee, get comfortable, and explore the fascinating world of Flutter and Google services.
In today's hyper-connected world, providing a seamless user sign-in process is vital for any app's success. That's where 'Google Sign in Flutter' steps in.
Google Sign-In is a secure authentication system that reduces our users' login burden by enabling them to sign in with their Google account—the same account they already use with Gmail, Play, and other Google services. By integrating 'Google Sign in' into your Flutter app, you do not just offer users a simpler alternative to the often tedious form-based sign-in process; you also increase sign-ups and engagement within your app as users are more likely to register and sign in when their favorite Google accounts can be used.
When users choose 'Google Sign in,' they're shown a consent screen, where they agree to let your app access specific data shown on this screen. After they consent, they return to your Flutter application, carrying a token generated for your app. This efficient sign-in flow makes app interactions smoother for both new and returning users.
Comparatively, the feature holds an edge over alternative sign-in providers like 'Apple Sign' because of its extensive usage and popularity. While 'Enable Facebook login' or GitHub login also provides similar capabilities, they still may not have the same reach amongst users as Google Account does. However, there's a catch! The process to 'Implement Google Sign' in a Flutter app is not a walk in the park. It has its share of complexities, but no worries. In this blog, we will tackle it head-on.
Let's start by setting up Google services for our Flutter app. First and foremost, we need a Firebase project to get started. You might ask, why Firebase? Firebase is Google's mobile platform that helps us quickly develop high-quality apps. It provides us with the backend service to handle the Google sign-in flow.
Navigate to the Firebase console.
Click 'Add Project', fill in your project details, and click 'Continue'.
On the Firebase console dashboard, on the left sidebar, click on 'Authentication'.
Click on 'Sign-in method'.
In the Sign-in providers list, enable the 'Google' sign-in provider.
In the form that appears, input your project's support email and click 'Save'.
Remember, for the 'Google Sign in Flutter' to work correctly, you must ensure that the same Firebase project is used for both iOS and Android versions of your Flutter app.
We will also leverage Google’s official sign-in Flutter plugin, which simplifies our task. But before we start adding the plugin to our project, we need to perform some necessary setup steps specific to iOS and Android platforms. Let's cover this in the forthcoming section.
Before we proceed into the technical minutiae, let's take a quick look at Flutter itself. Flutter is Google’s toolkit for crafting beautiful, natively compiled mobile, web, and desktop applications from a single codebase.
With its fast development, expressive and flexible UI, native performance, and, most importantly, its ability to compile to both iOS and Android, Flutter has gained considerable popularity among developers. Implementing 'Google Sign in' within a Flutter app only lends more weight to Flutter's appeal.
Google Sign-In integration into your Flutter application is handled through Firebase Authentication. Firebase Authentication aims to simplify the management of users of your applications, thus enhancing the whole 'Google Sign in Process'.
From helping you in managing your application's users on Firebase's cloud-based system to providing simple methods to implement various 'Sign in' processes that enable the authentication flow seamlessly, Firebase Authentication is truly a game-changer.
Firebase bridges the connection between Flutter and Google Sign-In, making app development more comfortable and exciting. Flutter, Firebase, and Google Sign-In—a trio made to deliver the best cross-platform app experience!
Now that we've discussed the basics let's move on to including the Google Sign-In plugin, a prerequisite for implementing 'Google Sign in Flutter'.
The first step to get started is to add the google_sign_in plugin to our Flutter project. You can do this by adding the following line to your pubspec.yaml file:
1dependencies: 2 google_sign_in: ^latest_version
Please replace 'latest_version' with the most recent version of the Google Sign-In plugin. Once you've done this, install it by running flutter pub get in your terminal. This command fetches all the dependencies listed in your 'pubspec.yaml' file, including our new buddy, the Google Sign-In plugin.
The plugin integrates with iOS and Android platforms by introducing platform-specific code into your Flutter project. This includes platform-specific file changes and additions that the plugin documentation provides succinctly.
After you've added the plugin, we'll need to provide some additional setup for both native platforms. First, we'll guide you through the setup process for iOS, then for Android.
Significant progress so far! Now that we've implemented Google Sign-In using the Flutter plugin, what's next? Let's take a look at what the sign-in process yields.
Once users successfully go through the sign-in flow, we receive user data. The Google Sign-In integration gives us access to attributes such as displayName, email, photoUrl, idToken and accessToken from the Google user's account. These are obtained from the 'GoogleSignInAccount' object.
We can offer a more personalized user experience by utilizing this information appropriately and ethically. Beyond personalization, we also enhance the interaction between the app and its users, promoting user engagement.
We've learned that great power comes with great issues...or was it responsibility? Let's address some common issues you might encounter while integrating 'Google Sign in Flutter.'
Issue 1: Errors in building the Flutter app after adding the Google Sign-In plugin
Solution: Ensure you have updated the Android Gradle plugin to 4.1.0 or newer. Also, check if your app-level build.gradle file has set minSdkVersion to 19 or higher.
Issue 2: Google Sign-In dialog doesn't pop up
Solution: This could be due to a logged-in Google account on the emulator or device causing an automatic sign-in. Try using an emulator with a clean image.
Issue 3: Exception when trying to sign-in like PlatformException(sign_in_failed, com.google.android.gms.common.api.ApiException: 10: , null, null)
Solution: Ensure you have set up your OAuth2 client ID correctly and enabled the Google Sign-In method in the Firebase Console.
Resolving these issues can make your integration of 'Google Sign in Flutter' a smooth sail.
So, fellow Flutter enthusiasts, we have reached the end of our exploration into setting up Google Sign-In for Flutter apps. We have traversed through the Flutter, Firebase, and Google Services plains and delved deep into the mechanics of Google Sign-In. Not only have we 'implemented Google Sign' into a Flutter app, but we've also seen how it harmonizes with the Firebase project to provide a seamless user login process.
I hope this guide is a reliable companion in your journey to improve user experience across your Flutter applications.
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