“‘Fluttertoast”已弃用，不应使用。将在进一步的版本中删除

dependencies:
  flutter:
    sdk: flutter
  toast: ^0.1.5

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Toast Example'),
        ),
        body: Center(
          child: RaisedButton(
            child: Text('Show Toast'),
            onPressed: () {
              Toast.show('This is a toast message', context);
            },
          ),
        ),
      ),
    );
  }
}