Roll the engine to 5db4b377244bae48bc21e449e616417e68c9a6b9 (#28296)

flutter/engine@f1f19bba8 Revert "Revert "Revert "Reland PerformanceOverlayLayer golden test (flutter/engine#7863)" (flutter/engine#7895)" (flutter/engine#7911)" (flutter/engine#7916)
flutter/engine@5db4b3772 Revert dart rolls (flutter/engine#7913)
flutter/engine@0053c1d50 Roll src/third_party/dart 75ee523f91..4cff5a4fd6 (6 commits)
flutter/engine@8620579cf Roll src/third_party/skia 9a049e6ce39d..63c4d3596915 (8 commits) (flutter/engine#7909)
flutter/engine@aa2b287cb Reland flutter/engine#7777 with proper LICENSE (flutter/engine#7888)
flutter/engine@a5773d121 Do not add ghost runs for trailing whitespace if the text is ellipsized (flutter/engine#7906)
flutter/engine@93eeb48ba Revert "Revert "Remove unnecessary entry-point closurization. (flutter/engine#7827)" (flutter/engine#7876)" (flutter/engine#7904)
flutter/engine@bbaeba3f3 Roll src/third_party/skia 05ff93c43ea5..9a049e6ce39d (11 commits) (flutter/engine#7903)
flutter/engine@1cf6b8b64 Roll src/third_party/dart 5ddd157809..75ee523f91 (19 commits)
flutter/engine@be32040ef Roll src/third_party/skia 348227b89430..05ff93c43ea5 (2 commits) (flutter/engine#7901)
flutter/engine@293b3de98 Roll src/third_party/skia 20ebd0cb3882..348227b89430 (4 commits) (flutter/engine#7900)
flutter/engine@6e6020d29 Eliminate .member = foo struct initialization (flutter/engine#7899)
flutter/engine@6d8bd99af Revert "Reland PerformanceOverlayLayer golden test (flutter/engine#7863)" (flutter/engine#7895)
flutter/engine@39f7066b6 Test profile and release build and unit tests (flutter/engine#7880)
flutter/engine@abe9826a9 Add accessibility semantics support to embedder (flutter/engine#7891)
flutter/engine@ce7016e1f Roll src/third_party/skia e471c05f92e8..20ebd0cb3882 (4 commits) (flutter/engine#7894)
flutter/engine@684c9394c Respect the custom GL proc table when creating the resource context on the IO thread. (flutter/engine#7893)
flutter/engine@e11d0e96f Android embedding refactor pr5 add flutterengine impl (flutter/engine#7878)
flutter/engine@2f4a38dbd Android embedding refactor pr3 add remaining systemchannels (flutter/engine#7892)
flutter/engine@8427d73c8 Reland PerformanceOverlayLayer golden test (flutter/engine#7863)
flutter/engine@61fc1786f Roll src/third_party/dart c92d5ca288..5ddd157809 (153 commits)
flutter/engine@b0671145a Roll src/third_party/skia 7738736f9622..e471c05f92e8 (23 commits) (flutter/engine#7889)
flutter/engine@6d7eb5218 Revert "Android embedding refactor pr3 add remaining systemchannels (flutter/engine#7874)" (flutter/engine#7886)
flutter/engine@dad6ec01c Correct onAccessibilityFeaturesChanged docs (flutter/engine#7883)
1 file changed
tree: 43396641ac6b5bb839c27b84ff39f963b8acc67e
  1. .github/
  2. bin/
  3. dev/
  4. examples/
  5. packages/
  6. .cirrus.yml
  7. .gitattributes
  8. .gitignore
  9. analysis_options.yaml
  10. AUTHORS
  11. CODE_OF_CONDUCT.md
  12. CONTRIBUTING.md
  13. dartdoc_options.yaml
  14. flutter_console.bat
  15. LICENSE
  16. PATENTS
  17. README.md
README.md

Flutter Flutter logo

Gitter Channel Build Status - Cirrus

Build beautiful native apps in record time

Flutter is Google’s mobile app SDK for crafting high-quality native interfaces on iOS and Android in record time. Flutter works with existing code, is used by developers and organizations around the world, and is free and open source.

Documentation

Main site: flutter.io

For announcements about new releases and breaking changes, follow the flutter-announce@googlegroups.com mailing list.

Fast development

Flutter's hot reload helps you quickly and easily experiment, build UIs, add features, and fix bugs. Experience sub-second reload times, without losing state, on emulators, simulators, and hardware for iOS and Android.

Expressive and flexible UI

Quickly ship features with a focus on native end-user experiences. Layered architecture allows full customization, which results in incredibly fast rendering and expressive and flexible designs.

Delight your users with Flutter's built-in beautiful Material Design and Cupertino (iOS-flavor) widgets, rich motion APIs, smooth natural scrolling, and platform awareness.

Browse the widget catalog.

Modern, reactive framework

Easily compose your UI with Flutter's modern functional-reactive framework and rich set of platform, layout, and foundation widgets. Solve your tough UI challenges with powerful and flexible APIs for 2D, animation, gestures, effects, and more.

class CounterState extends State<Counter> {
  int counter = 0;

  void increment() {
    // Tells the Flutter framework that state has changed,
    // so the framework can run build() and update the display.
    setState(() {
      counter++;
    });
  }

  Widget build(BuildContext context) {
    // This method is rerun every time setState is called.
    // The Flutter framework has been optimized to make rerunning
    // build methods fast, so that you can just rebuild anything that
    // needs updating rather than having to individually change
    // instances of widgets.
    return Row(
      children: <Widget>[
        RaisedButton(
          onPressed: increment,
          child: Text('Increment'),
        ),
        Text('Count: $counter'),
      ],
    );
  }
}

Browse the widget catalog and learn more about the functional-reactive framework.

Access native features and SDKs

Make your app come to life with platform APIs, 3rd party SDKs, and native code. Flutter lets you reuse your existing Java/Kotlin and ObjC/Swift code, and access native features and SDKs on Android and iOS.

Accessing platform features is easy. Here is a snippet from our interop example:

Future<void> getBatteryLevel() async {
  var batteryLevel = 'unknown';
  try {
    int result = await methodChannel.invokeMethod('getBatteryLevel');
    batteryLevel = 'Battery level: $result%';
  } on PlatformException {
    batteryLevel = 'Failed to get battery level.';
  }
  setState(() {
    _batteryLevel = batteryLevel;
  });
}

Learn how to use packages or write platform channels to access native code, APIs, and SDKs.

Unified app development

Flutter has the tools and libraries to help you easily bring your ideas to life on iOS and Android. If you don't have any mobile development experience, Flutter is an easy and fast way to build beautiful mobile apps. If you are an experienced iOS or Android developer, you can use Flutter for your views and leverage much of your existing Java/Kotlin/ObjC/Swift investment.

Learn more about what makes Flutter special in the technical overview.

More resources

Join us in our Gitter chat room or join our public mailing list, flutter-dev@googlegroups.com.

How to contribute

To join the team working on Flutter, see our contributor guide.