flutter-architecting-apps
Architecting Flutter Applications
Contents
- Core Architectural Principles
- Structuring the Layers
- Implementing the Data Layer
- Feature Implementation Workflow
- Examples
Core Architectural Principles
Design Flutter applications to scale by strictly adhering to the following principles:
- Enforce Separation of Concerns: Decouple UI rendering from business logic and data fetching. Organize the codebase into distinct layers (UI, Logic, Data) and further separate by feature within those layers.
- Maintain a Single Source of Truth (SSOT): Centralize application state and data in the Data layer. Ensure the SSOT is the only component authorized to mutate its respective data.
- Implement Unidirectional Data Flow (UDF): Flow state downwards from the Data layer to the UI layer. Flow events upwards from the UI layer to the Data layer.
- Treat UI as a Function of State: Drive the UI entirely via immutable state objects. Rebuild widgets reactively when the underlying state changes.
Structuring the Layers
More from gsmlg-dev/code-agent
flutter-animating-apps
Implements animated effects, transitions, and motion in a Flutter app. Use when adding visual feedback, shared element transitions, or physics-based animations.
20flutter-building-layouts
Builds Flutter layouts using the constraint system and layout widgets. Use when creating or refining the UI structure of a Flutter application.
20flutter-managing-state
Manages application and ephemeral state in a Flutter app. Use when sharing data between widgets or handling complex UI state transitions.
20elixir-architect
Use when designing or architecting Elixir/Phoenix applications, creating comprehensive project documentation, planning OTP supervision trees, defining domain models with Ash Framework, structuring multi-app projects with path-based dependencies, or preparing handoff documentation for Director/Implementor AI collaboration
19flutter-working-with-databases
Manages local data persistence using SQLite or other database solutions. Use when a Flutter app needs to store, query, or synchronize large amounts of structured data on the device.
19flutter-reducing-app-size
Measures and optimizes the size of Flutter application bundles for deployment. Use when minimizing download size or meeting app store package constraints.
19