How to Verify Email and Password in Flutter with Firebase

Master the process of verifying user `email` and `password` in your Flutter app using `Firebase`, ensuring secure access to your application. --- This video is based on the question https://stackoverflow.com/q/62640699/ asked by the user 'MrFlutter' ( https://stackoverflow.com/u/13818956/ ) and on the answer https://stackoverflow.com/a/62666851/ provided by the user 'ByteMe' ( https://stackoverflow.com/u/10672131/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: how to verify email and password flutter firebase Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Verify Email and Password in Flutter with Firebase If you’re diving into Flutter and Firebase for the first time, you may run into a common hurdle: ensuring that users verify their email addresses before they gain access to the main functionality of your app. This guide will guide you through the process of implementing email verification in your Flutter application, making sure that users can’t log in until they’ve confirmed their email addresses. The Problem As a beginner in Flutter, you might encounter an issue where users are allowed to access the home screen of your application without verifying their email and password properly. This not only affects the security of your app but could also lead to a poor user experience. You'll want to ensure that users have confirmed their email address through a verification process before they gain access. Sample Code for Current Log In Functionality Your current code might look something like this: [[See Video to Reveal this Text or Code Snippet]] Here, users get redirected to the home page as soon as they validate their email and password fields. But we need to add an extra step to ensure the entered email is verified. The Solution: Implementing Firebase Email Verification Firebase provides built-in functions that can help you manage user authentication, including email verification. Follow the steps below to implement a proper email verification mechanism in your Flutter app. Step 1: Modifying the Login Function To start with, you need to modify your login function. Here’s how you can check if a user's email is verified after they attempt to sign in: [[See Video to Reveal this Text or Code Snippet]] This function checks if the user has verified their email. If yes, it returns true; if not, it returns false. You must then handle the scenario in the UI accordingly. Step 2: Send Verification Email During Registration When a new user registers, you’ll need to send them a verification email. Here’s how you can implement that in your registration function: [[See Video to Reveal this Text or Code Snippet]] This code creates a new user and automatically sends a verification email to the provided email address. Remember, the users need to click on the link sent to their email to verify it before they can access your app. Step 3: Handling UI Logic After Login Attempt Now, back in your login button’s onPressed function, you'll want to provide feedback to users if their email has not been verified. You can do this as follows: [[See Video to Reveal this Text or Code Snippet]] With this adjustment, your application will provide feedback to users who haven't verified their email, guiding them towards completing the process. Conclusion Implementing email verification in your Flutter app using Firebase is crucial for ensuring that your users have provided a valid email address before accessing your application. By modifying your authentication functions and properly managing user feedback in the UI, you can create a secure and user-friendly experience. Now you have the tools to ensure your users can only access your app once they have verified their email addresses, protecting both your app and your users. Feel free to reach out if you have any questions or need further assistance in implementing these features!