If you’re diving into the world of Flutter development, you might have stumbled upon the concept of Clean Architecture combined with Riverpod for state management. This article will guide you through setting up a Flutter application that utilizes a Dummy JSON API, complete with features such as login, product fetching, searching, and pagination.

Features of Our Flutter Application

• Login functionality
• Fetch products
• Search products
• Pagination

Technology Stack Used

• Riverpod: For state management
• Freezed: For code generation
• Dartz: Functional programming concepts like EitherLeft and Right
• Auto Route: For simplified route management
• Dio: HTTP client for making API requests
• Shared Preferences: For persistent storage
• Flutter and Dart: Essential components of our application

Understanding the Architecture

Think of a well-structured Flutter application like a multi-story building. Each layer serves a specific purpose and is designed to minimize dependencies, making it easier to maintain and upgrade. Here’s how the layers are structured in our app:

1. Data Layer

The data layer is like the foundation of our building—it holds everything up. This layer is responsible for communicating with different data sources, which can be either remote services (like APIs) or local databases.

• Data Source: Responsible for acquiring and updating data. It consists of:
• Remote: Handles HTTP requests.
• Local: Caches or persists data.
• Repository: Acts as a bridge between data and domain layers, coordinating data from different sources.

2. Domain Layer

Much like the blueprint of our building, the domain layer contains the business logic and is implemented purely in Dart, free from UI components.

• Providers: Define the necessary logic processing.
• Repositories: Abstract classes outlining expected functionality.

3. Presentation Layer

This layer is akin to the paint and décor of our building, as it houses everything related to UI and user interactions, while keeping the business logic at bay.

• Widgets: Display UI elements and notify events.
• Providers: Manage presentation logic and communicate with domain providers.

Step-by-Step Setup

Now, let’s get into the nitty-gritty of setting this up. Follow these steps:

1. Clone the Repository

Start by cloning the project repository:

git clone https://github.com/Uuttssaavv/flutter-clean-architecture-riverpod

2. Navigate to the Project Directory

cd flutter-clean-architecture-riverpod

3. Install Packages

flutter pub get

4. Build the Project

flutter pub run build_runner build

5. Run the Application

flutter run

Alternatively, you can press the F5 key in VSCode if you prefer.

Troubleshooting Common Issues

While setting up or running the application, you may encounter some issues. Here are a few common troubleshooting ideas:

• Dependencies not found: Ensure all packages are correctly installed by running flutter pub get again.
• Build errors: Verify the code syntax and that the necessary files are in the expected structure.
• API issues: Ensure the API you’re trying to communicate with is up and running; check your internet connection.

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Conclusion

Employing Clean Architecture in your Flutter applications not only streamlines code management but also enhances scalability. The Riverpod state management system complements this architecture by allowing you to manage UI state more effectively and reduces unwanted re-builds.

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.