flutter-development — Claude Code skill: Flutter and Dart

---
name: flutter-development
description: >
  Build beautiful cross-platform mobile apps with Flutter and Dart. Covers
  widgets, state management with Provider/BLoC, navigation, API integration, and
  material design.
---

# Flutter Development

## Table of Contents

- [Overview](#overview)
- [When to Use](#when-to-use)
- [Quick Start](#quick-start)
- [Reference Guides](#reference-guides)
- [Best Practices](#best-practices)

## Overview

Create high-performance, visually stunning mobile applications using Flutter with Dart language. Master widget composition, state management patterns, navigation, and API integration.

## When to Use

- Building iOS and Android apps with native performance
- Designing custom UIs with Flutter's widget system
- Implementing complex animations and visual effects
- Rapid app development with hot reload
- Creating consistent UX across platforms

## Quick Start

Minimal working example:

```dart
// pubspec.yaml
name: my_flutter_app
version: 1.0.0

dependencies:
  flutter:
    sdk: flutter
  provider: ^6.0.0
  http: ^1.1.0
  go_router: ^12.0.0

// main.dart with GoRouter navigation
import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(
// ... (see reference guides for full implementation)
```

## Reference Guides

Detailed implementations in the `references/` directory:

| Guide | Contents |
|---|---|
| [Project Structure & Navigation](references/project-structure-navigation.md) | Project Structure & Navigation |
| [State Management with Provider](references/state-management-with-provider.md) | State Management with Provider |
| [Screens with Provider Integration](references/screens-with-provider-integration.md) | Screens with Provider Integration |

## Best Practices

### ✅ DO

- Use widgets for every UI element
- Implement proper state management
- Use const constructors where possible
- Dispose resources in state lifecycle
- Test on multiple device sizes
- Use meaningful widget names
- Implement error handling
- Use responsive design patterns
- Test on both iOS and Android
- Document custom widgets

### ❌ DON'T

- Build entire screens in build() method
- Use setState for complex state logic
- Make network calls in build()
- Ignore platform differences
- Create overly nested widget trees
- Hardcode strings
- Ignore performance warnings
- Skip testing
- Forget to handle edge cases
- Deploy without thorough testing