67ffe1c2cb
This PR adds the full framework stack (layer->render object->widget, and service) for embedding iOS views with minimal functionality. I allowed myself to throw the entire framework stack in one PR since we're mostly mirroring the structure we already established for embedded Android views, so this PR is a little bigger than usual. I'm happy to break it down to the different pieces of the stack if reviewers prefer. Specifically this PR adds: * A UiKitView widget for embedding a UIView in the widget tree. * A RenderUiKitView which is the render object for showing a UIView. * A PlatformViewLayer which denotes the position of a UIView in the layer tree. * The iOS platform_views system channel client code in services/platform_views.dart * Splits the fake platform views controller to an Android and iOS controllers. TBD in following PRs: * Plumb the layout direction all the way to the platform view (currently there is still no engine support for it). * Integrate with gesture arenas (engine support is still missing as well). |
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examples | ||
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CONTRIBUTING.md | ||
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README.md |
Flutter
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
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- Get started
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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.
Build
- Beautiful app UIs
- Rich 2D GPU-accelerated APIs
- Reactive framework
- Animation/motion APIs
- Material Design and iOS widgets
- Fluid coding experience
- Sub-second, stateful hot reload
- IntelliJ: refactor, code completion, etc
- Dart language and core libs
- Package manager
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- Interop with mobile OS APIs & SDKs
- Gradle/Java/Kotlin
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Optimize
- Test
- Unit testing
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- IDE debugger
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- async/await aware
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- Compile
- Native ARM code
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- App Store
- Play Store
Learn more about what makes Flutter special in the technical overview.
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