mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
d064c95c10
fix https://github.com/flutter/flutter/issues/134980 Calling `EnginePlatformDispatcher.instance.invokeOnAccessibilityFeaturesChanged();` after `EnginePlatformDispatcher.instance.configuration = newConfiguration` to notify update configuration event to `MediaQuery`. before https://github.com/user-attachments/assets/89969cc7-f9fa-4ac0-8ce0-d026d5676f27 after https://github.com/user-attachments/assets/8a284d42-e344-4039-8569-8567956326b7 <details> <summary>Example Code</summary> ```dart import 'package:flutter/material.dart'; import 'package:flutter/semantics.dart'; void main() { runApp(const MaterialApp(home: MyHomePage())); } class MyHomePage extends StatelessWidget { const MyHomePage({super.key}); @override Widget build(BuildContext context) { return Scaffold( body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ ElevatedButton( onPressed: () { SemanticsBinding.instance.ensureSemantics(); }, child: const Text('Enable a11y'), ), const SizedBox(height: 24), ElevatedButton( onPressed: () { ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: const Text('Should stay visible'), action: SnackBarAction(label: 'Action', onPressed: () {}), ), ); }, child: const Text('Show snackbar'), ), const SizedBox(height: 24), Text( 'MediaQuery.accessibleNavigationOf(context): ${MediaQuery.accessibleNavigationOf(context)}', ), Text( 'SemanticsBinding.instance.semanticsEnabled: ${SemanticsBinding.instance.semanticsEnabled}', ), Text( 'SemanticsBinding.instance.platformDispatcher.semanticsEnabled: ${SemanticsBinding.instance.platformDispatcher.semanticsEnabled}', ), Text( 'SemanticsBinding.instance.accessibilityFeatures: ${SemanticsBinding.instance.accessibilityFeatures}', ), ], ), ), ); } } ``` </details> ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: chunhtai <47866232+chunhtai@users.noreply.github.com> Co-authored-by: Mouad Debbar <mouad.debbar@gmail.com>
Flutter
Flutter is a new way to build high-performance, cross-platform mobile, web, and desktop apps. Flutter is optimized for today's — and tomorrow's — mobile and desktop devices. We are focused on low-latency input and high frame rates on all platforms.
See the getting started guide for information about using Flutter.