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Discover how to effectively pass user information from the SignIn screen to the Home screen in your Flutter app using Azure AD Authentication. Get step-by-step guidance and example code to enhance your app's functionality!
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Flutter Azure AD Auth: How to Display User Email and Name on Another Screen

If you're diving into Flutter and using Azure Active Directory for authentication, you might find yourself needing to display certain user details, such as their email and username, on a different screen after they log in. This guide will walk you through the process of retrieving and displaying this information from your SignIn screen to your Home screen effectively.

The Problem at Hand

As a new Flutter developer, you have successfully authenticated users with Azure AD and retrieved their email and username. Now, your goal is to display this information on the home screen of your application. This requires passing the relevant user data from one widget to another, which can be challenging if you aren’t familiar with Flutter’s navigation and state management.

Solution Overview

To achieve this, we need to make the following adjustments:

Make our home screen widget publicly accessible.

Pass the user object (email or username) from the SignIn class to the Home screen.

Ensure that we are properly handling the user account information during the navigation process.

Step 1: Update Home Screen Widget Visibility

First, we need to change the visibility of your home screen’s widget class. In your code, the class is currently private because of the underscore before its name. Update it like this:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Modify the handleGetAccount Method

You need to modify the handleGetAccount method to ensure that it correctly returns a user object. Here’s how to do that:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Pass the User Object During Navigation

Now that we have the updated handleGetAccount method, we can use it to retrieve the signed-in user within the refreshSignedInStatus method. Update this method as follows:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Update the NavScreen Widget

Next, ensure that your NavScreen widget accepts the currentAccount parameter in its constructor:

[[See Video to Reveal this Text or Code Snippet]]

Step 5: Pass User Information to the Home Screen

Lastly, you need to pass the currentAccount object from NavScreen to HomeScreenDesktop. Similar to previous steps, make sure HomeScreenDesktop receives this information:

[[See Video to Reveal this Text or Code Snippet]]

And update the constructor of HomeScreenDesktop accordingly:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you can successfully pass user authentication details such as their email and username from the SignIn screen to another screen in your Flutter application. This enhances the user experience by providing relevant information seamlessly across various parts of your app.

With a strong grasp of navigation and state management in Flutter, you can build powerful and engaging applications that respond effectively to user actions. Happy coding!