不能将参数类型“JsObject”分配给参数类型“BuildContext”

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Example')),
        body: MyWidget(),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  void _showDialog(BuildContext context) {
    showDialog(
      context: context,
      builder: (BuildContext innerContext) {
        return AlertDialog(
          title: Text('Hello'),
          content: Text('This is a dialog.'),
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: ElevatedButton(
        onPressed: () => _showDialog(context),
        child: Text('Show Dialog'),
      ),
    );
  }
}