In today’s world of application development, user authentication is crucial. With Flutter, building a secure and user-friendly login system becomes a breeze. This blog will guide you through creating an intuitive Flutter login example utilizing a ScrollView, JSON Rest API, and even biometric authentication with FaceID, TouchID, and Fingerprint Reader. Get ready to dive deep into the heart of app development!

Features of Our Flutter Login Example

• Auto Login
• Enhanced Security with Biometric Authentication
• Menu and Logout Functionality
• Dark Mode and True Black Themes
• Settings Page
• Authentication Service
• Whats New Page
• Remember Me Toggle
• Custom Theme Integration
• Scoped Model for State Management
• Automatic JSON serialization with json_serializable

Getting Started

To get started with this project, follow the steps below:

Prerequisites

• Flutter SDK
• Android Studio or another compatible IDE

Step 1: Clone the Project

Clone or fork the project from the repository to your local machine.

iOS Integration

For iOS integration, ensure to add the following keys to your Info.plist file:

NSFaceIDUsageDescription
Why is my app authenticating using face id?

Failing to include this key will result in an annoying dialog informing users that the application hasn’t been updated for TouchID.

Android Integration

For Android, modify your AndroidManifest.xml file to include permission for fingerprints:

Optional: Sticky Authentication

You can enable sticky authentication by setting the stickyAuth option to true. This allows the plugin to continue authenticating even if the app goes into the background.

Screenshots of Features

Here’s a glimpse of the user interface you’ll create:

Settings Page and Menu (Including Dark Mode)

Troubleshooting

If you run into issues or have questions while implementing the login example, consider these troubleshooting steps:

• Ensure all dependencies and Flutter SDK are updated to the latest versions.
• Double-check your permissions in AndroidManifest.xml and the keys in Info.plist.
• Consult the GitHub repository for any known issues.
• If your app fails to authenticate due to fingerprint issues, make sure your device supports biometric authentication.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Conclusion

With the right approach, integrating a secure login system into your Flutter application can be seamless and efficient. Our steps guide you from setup to advanced features such as dark mode and biometric security. At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.