Flutter Architecture Samples.A gallery of app architectures

flutter_architecture_samples .TodoMVC for Flutter!

Flutter provides a lot of flexibility in deciding how to organize and architect your apps. While this freedom is very valuable, it can also lead to apps with large classes, inconsistent naming schemes, as well as mismatching or missing architectures. These types of issues can make testing, maintaining and extending your apps difficult.

The Flutter Architecture Samples project demonstrates strategies to help solve or avoid these common problems. This project implements the same app using different architectural concepts and tools.

You can use the samples in this project as a learning reference, or as a starting point for creating your own apps. The focus of this project is on demonstrating how to structure your code, design your architecture, and the eventual impact of adopting these patterns on testing and maintaining your app. You can use the techniques demonstrated here in many different ways to build apps. Your own particular priorities will impact how you implement the concepts in these projects, so you should not consider these samples to be canonical examples. To ensure the focus is kept on the aims described above, the app uses a simple UI.

Current Samples

Supporting Code

  • integration_tests - Demonstrates how to write selenium-style integration (aka end to end) tests using the Page Object Model. This test suite is run against all samples.
  • todos_repository_core - Defines the core abstract classes for loading and saving data so that storage can be implemented in various ways, such as file storage or firebase for mobile projects, or window.localStorage for web projects.
  • todos_repository_local_storage - Implements the todos repository using the file system, window.localStorage, and SharedPreferences as the data source.
  • firebase_flutter_repository - Implements the todos repository using firestore as the data source.
  • firebase_rtdb_flutter_repository - Implements the todos repository using firebase real-time database as the data source.

Running the samples

iOS / Android

cd <sample_directory>
flutter run 


Make sure you’re on Flutter version “Flutter 1.12.13+hotfix.6 • channel beta” or newer. Not all samples support web at this time, so please check the sample directory for a lib/main_web.dart file.

cd <sample_directory>
flutter run -d chrome -t lib/main_web.dart

Why a todo app?

The app in this project aims to be simple enough that you can understand it quickly, but complex enough to showcase difficult design decisions and testing scenarios. For more information, see the app’s specification.

Be excellent to each other

This Repo is meant as a discussion platform for various architectures. Let us debate these ideas vigorously, but let us be excellent to each other in the process!

While healthy debate and contributions are very welcome, trolls are not. Read the code of conduct for detailed information.


Feel free to join in the discussion, file issues, and we’d love to have more samples added! Please read the CONTRIBUTING file for guidance :)


All code in this repo is MIT licensed.


All of these ideas and even some of the language are directly influenced by two projects:


I’d like to thank all of the folks who have helped write new samples, improve the current implementations, and added documentation! You’re amazing! :)

Download Details:

Author: brianegan

Live Demo: http://todomvc.com

GitHub: https://github.com/brianegan/flutter_architecture_samples

#flutter #programming

Flutter Architecture Samples.A gallery of app architectures
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