Flutter Web Semantics does not announce the same announcement multiple times in a row #142250
Description
Steps to reproduce
Run the sample app and click the Different announcements and Same announcements buttons multiple times.
Expected results
Similar to how all the Different announcements generated are being read and announced by the screen reader, all the Same announcements should be read/announced as well by the screen reader.
Actual results
When "announcing" messages with the same content some of them are being dropped.
Code sample
Code sample
import 'package:flutter/semantics.dart';
import 'package:flutter/material.dart';
const Color darkBlue = Color.fromARGB(255, 18, 32, 47);
var count = 0;
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: darkBlue,
),
debugShowCheckedModeBanner: false,
home: Scaffold(
body: Center(
child: MyWidget(),
),
),
);
}
}
class MyWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Column(
children: [
OutlinedButton(
onPressed: () async {
final textDirection = Directionality.of(context);
await SemanticsService.announce('Test announcement $count', textDirection, assertiveness: Assertiveness.assertive);
count++;
},
child: Text(
'Different announcements',
style: Theme.of(context).textTheme.headlineMedium,
),
),
OutlinedButton(
onPressed: () async {
final textDirection = Directionality.of(context);
await SemanticsService.announce('Test announcement', textDirection, assertiveness: Assertiveness.assertive);
},
child: Text(
'Same announcements',
style: Theme.of(context).textTheme.headlineMedium,
),
),
],
);
}
}