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Welcome to the Flutter API reference documentation. **Welcome to the Flutter API reference documentation!**
Flutter is Googles mobile UI framework for crafting high-quality native Flutter is Google's SDK for crafting beautiful, fast user experiences for
interfaces on iOS and Android in record time. Flutter works with existing code, mobile, web and desktop from a single codebase. Flutter works with existing
is used by developers and organizations around the world, and is free and open code, is used by developers and organizations around the world, and is free
source. and open source.
The API reference herein covers all libraries that are exported by the Flutter This API reference covers all libraries that are exported by the Flutter
SDK. SDK.
### More Documentation ### More Documentation
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#### Dart Libraries #### Dart Libraries
Libraries in the "Dart" section exist in the `'dart:'` namespace and are imported Libraries in the "Dart" section exist in the `dart:` namespace and are imported
using `'dart:<library>'`, like so: using `'dart:<library>'`, like so:
```dart ```dart
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Except for `'dart:core'`, you must import a Dart library before you can use it. Except for `'dart:core'`, you must import a Dart library before you can use it.
#### Other Libraries #### Supporting Libraries
Libraries in other sections are supporting libraries that ship with Flutter. Libraries in other sections are supporting libraries that ship with Flutter.
They are organized by package and are imported using They are organized by package and are imported using
@ -54,8 +54,11 @@ import 'package:flutter_test/flutter_test.dart';
import 'package:file/local.dart'; import 'package:file/local.dart';
``` ```
### Finding Other Libraries ### Packages on pub.dev
Flutter has a rich community of packages that have been contributed by the Flutter has a rich ecosystem of packages that have been contributed by the
open-source community. You can browse those packages at Flutter team and the broader open source community to a central repository.
[pub.dev/flutter](https://pub.dev/flutter) Among the thousands of packages you'll find support for Firebase, Google
Fonts, hardware services like Bluetooth and camera, new widgets and
animations, and integration with other popular web services. You can browse
those packages at [pub.dev](https://pub.dev).