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API reference

Flutter & Dart API reference

Widgets, state and cross-platform apps

Last updated 1 November 2026

Identifiers: 56
With full guides: 0
Types: 5

Topics covered

Widgets
Layout
State
Navigation
Async
Tooling

Class

Name	What it does
`StatelessWidget`	Class
`StatefulWidget`	Class
`State`	Class
`BuildContext`	Class
`InheritedWidget`	Class
`ThemeData`	Class
`AnimationController`	Class
`ChangeNotifier`	Class

Component

Name	What it does
`MaterialApp`	Component
`Scaffold`	Component
`AppBar`	Component
`Container`	Component
`Row`	Component
`Column`	Component
`Stack`	Component
`Text`	Component
`Image`	Component
`ListView`	Component
`GridView`	Component
`Padding`	Component
`Center`	Component
`Expanded`	Component
`SizedBox`	Component
`ElevatedButton`	Component
`TextField`	Component
`Form`	Component
`FutureBuilder`	Component
`StreamBuilder`	Component
`Navigator`	Component
`GestureDetector`	Component
`Hero`	Component
`AnimatedContainer`	Component
`LayoutBuilder`	Component
`SafeArea`	Component

Function

Name	What it does
`runApp`	Function
`setState`	Function
`initState`	Function
`dispose`	Function
`build`	Function
`showDialog`	Function

Command

Name	What it does
`flutter create`	Command
`flutter run`	Command
`flutter build apk`	Command
`flutter build ios`	Command
`flutter pub get`	Command
`flutter doctor`	Command
`flutter test`	Command
`flutter analyze`	Command

Concept

Name	What it does
`Hot reload`	Concept
`Widget tree`	Concept
`Null safety`	Concept
`Futures`	Concept
`Streams`	Concept
`Isolates`	Concept
`Platform channels`	Concept
`Mixins`	Concept

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