1---2name: flutter3description: Flutter framework for building beautiful, fast user experiences for mobile, web, and desktop from a single codebase. Use when building Flutter apps, working with widgets, state management, navigation, animations, or Material Design components.4---5
6# Flutter
7
8> The skill is based on Flutter framework, generated at 2026-01-31.
9
10Flutter is Google's SDK for crafting beautiful, fast user experiences for mobile, web, and desktop from a single codebase. Flutter works with existing code, is used by developers and organizations around the world, and is free and open source.
11
12Flutter uses Dart as its programming language and follows a widget-based architecture where everything is a widget. The framework provides hot reload for fast development cycles, a rich set of Material Design and Cupertino widgets, and excellent performance through compiled code.
13
14## Core References
15
16| Topic | Description | Reference |
17|-------|-------------|-----------|
18| Widget System | StatelessWidget, StatefulWidget, Widget lifecycle, keys | [core-widgets](references/core-widgets.md) |
19| State Management | setState, StatefulWidget, ValueNotifier, ChangeNotifier | [core-state-management](references/core-state-management.md) |
20| Layout System | Row, Column, Stack, Flex, constraints, sizing | [core-layout](references/core-layout.md) |
21| BuildContext | Context usage, InheritedWidget, theme access | [core-build-context](references/core-build-context.md) |
22| InheritedWidget | Sharing data down widget tree, InheritedWidget patterns | [features-inherited-widget](references/features-inherited-widget.md) |
23
24## Widgets
25
26### Basic Widgets
27
28| Topic | Description | Reference |
29|-------|-------------|-----------|
30| Text & Styling | Text widget, TextStyle, RichText, TextSpan | [widgets-text](references/widgets-text.md) |
31| Images | Image widget, AssetImage, NetworkImage, ImageProvider | [widgets-images](references/widgets-images.md) |
32| Icons | Icon widget, IconData, IconTheme | [widgets-icons](references/widgets-icons.md) |
33| Buttons | ElevatedButton, TextButton, OutlinedButton, IconButton | [widgets-buttons](references/widgets-buttons.md) |
34| Input Fields | TextField, TextFormField, Form, FormField | [widgets-input](references/widgets-input.md) |
35| Async Widgets | FutureBuilder, StreamBuilder, async operations | [widgets-async](references/widgets-async.md) |
36| ValueListenableBuilder | Building widgets based on ValueListenable changes | [widgets-value-listenable](references/widgets-value-listenable.md) |
37| PageView | Swipeable pages, PageController, page navigation | [widgets-pageview](references/widgets-pageview.md) |
38| RefreshIndicator | Pull-to-refresh functionality | [widgets-refresh-indicator](references/widgets-refresh-indicator.md) |
39| Dismissible | Swipe-to-dismiss widgets | [widgets-dismissible](references/widgets-dismissible.md) |
40| TabBar & Tabs | Tab navigation, TabController, TabBarView | [widgets-tabs](references/widgets-tabs.md) |
41| Forms & Validation | Form validation, validators, form handling | [features-forms-validation](references/features-forms-validation.md) |
42
43### Layout Widgets
44
45| Topic | Description | Reference |
46|-------|-------------|-----------|
47| Flex Layouts | Row, Column, Flex, Flexible, Expanded | [layout-flex](references/layout-flex.md) |
48| Stack Layout | Stack, Positioned, alignment | [layout-stack](references/layout-stack.md) |
49| Container | Container, BoxDecoration, padding, margin | [layout-container](references/layout-container.md) |
50| List Views | ListView, ListTile, GridView, Sliver widgets | [layout-lists](references/layout-lists.md) |
51| Slivers | CustomScrollView, SliverList, SliverGrid, advanced scrolling | [features-slivers](references/features-slivers.md) |
52| Scroll Controller | Programmatic scroll control, scroll listeners | [features-scroll-controller](references/features-scroll-controller.md) |
53
54## Features
55
56### Navigation
57
58| Topic | Description | Reference |
59|-------|-------------|-----------|
60| Navigator | Navigator.push, Navigator.pop, routes | [features-navigation](references/features-navigation.md) |
61| Named Routes | Route configuration, onGenerateRoute | [features-named-routes](references/features-named-routes.md) |
62| Router | GoRouter, declarative routing | [features-router](references/features-router.md) |
63
64### Animations
65
66| Topic | Description | Reference |
67|-------|-------------|-----------|
68| Implicit Animations | AnimatedContainer, AnimatedOpacity, AnimatedSize | [features-implicit-animations](references/features-implicit-animations.md) |
69| Explicit Animations | AnimationController, Tween, AnimationBuilder | [features-explicit-animations](references/features-explicit-animations.md) |
70| Hero Animations | Hero widget, shared element transitions | [features-hero-animations](references/features-hero-animations.md) |
71
72### Material Design
73
74| Topic | Description | Reference |
75|-------|-------------|-----------|
76| Material App | MaterialApp, Theme, ThemeData | [features-material-app](references/features-material-app.md) |
77| Material Components | AppBar, Scaffold, Drawer, BottomNavigationBar | [features-material-components](references/features-material-components.md) |
78| Material 3 | Material 3 design system, color schemes | [features-material-3](references/features-material-3.md) |
79
80### Cupertino (iOS)
81
82| Topic | Description | Reference |
83|-------|-------------|-----------|
84| Cupertino Widgets | iOS-style widgets, CupertinoApp, CupertinoNavigationBar | [features-cupertino](references/features-cupertino.md) |
85
86### UI Components
87
88| Topic | Description | Reference |
89|-------|-------------|-----------|
90| Dialogs & Modals | AlertDialog, showDialog, showModalBottomSheet | [features-dialogs](references/features-dialogs.md) |
91| Focus Management | FocusNode, FocusScope, keyboard navigation | [features-focus](references/features-focus.md) |
92
93### Platform Integration
94
95| Topic | Description | Reference |
96|-------|-------------|-----------|
97| Platform Channels | MethodChannel, EventChannel, native communication | [features-platform-channels](references/features-platform-channels.md) |
98| Platform Views | AndroidView, UiKitView, embedding native views | [features-platform-views](references/features-platform-views.md) |
99| Assets & Resources | Asset management, pubspec.yaml, asset loading | [features-assets](references/features-assets.md) |
100| HTTP & Networking | HTTP requests, API calls, JSON parsing | [features-http](references/features-http.md) |
101| Responsive Design | MediaQuery, LayoutBuilder, screen adaptation | [features-responsive](references/features-responsive.md) |
102| Keys | ValueKey, ObjectKey, GlobalKey, when to use keys | [features-keys](references/features-keys.md) |
103| Widget Lifecycle | initState, dispose, lifecycle management | [features-lifecycle](references/features-lifecycle.md) |
104| Error Handling | Try-catch, error widgets, error boundaries | [features-error-handling](references/features-error-handling.md) |
105| PopScope | Handle back button and navigation pop events | [features-pop-scope](references/features-pop-scope.md) |
106
107## Advanced
108
109| Topic | Description | Reference |
110|-------|-------------|-----------|
111| Custom Paint | CustomPainter, Canvas, custom graphics | [advanced-custom-paint](references/advanced-custom-paint.md) |
112| Gestures | GestureDetector, GestureRecognizer, drag and drop | [advanced-gestures](references/advanced-gestures.md) |
113| Performance | Performance optimization, const constructors, keys | [advanced-performance](references/advanced-performance.md) |
114| Testing | Widget testing, integration testing, test utilities | [advanced-testing](references/advanced-testing.md) |
115
116## Best Practices
117
118| Topic | Description | Reference |
119|-------|-------------|-----------|
120| State Management | When to use setState, state lifting, patterns | [best-practices-state](references/best-practices-state.md) |
121| Performance | Optimization techniques, const usage, patterns | [best-practices-performance](references/best-practices-performance.md) |
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