Testing a semantic announcement in Flutter

main.dart

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: ElevatedButton(
          child: Text("announce"),
          onPressed: () => SemanticsService.announce("announcement made", TextDirection.ltr),
        ),
      ),
    );
  }
}