如何在flutter中将数据从表单传递到下一个屏幕？

// 表单页面（源页面）
import 'package:flutter/material.dart';

class FormPage extends StatefulWidget {
  @override
  _FormPageState createState() => _FormPageState();
}

class _FormPageState extends State<FormPage> {
  TextEditingController _nameController = TextEditingController();
  TextEditingController _emailController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('表单页面'),
      ),
      body: Padding(
        padding: EdgeInsets.all(16.0),
        child: Column(
          children: [
            TextField(
              controller: _nameController,
              decoration: InputDecoration(
                labelText: '姓名',
              ),
            ),
            TextField(
              controller: _emailController,
              decoration: InputDecoration(
                labelText: '邮箱',
              ),
            ),
            RaisedButton(
              child: Text('下一步'),
              onPressed: () {
                String name = _nameController.text;
                String email = _emailController.text;
                Navigator.push(
                  context,
                  MaterialPageRoute(
                    builder: (context) => NextPage(name: name, email: email),
                  ),
                );
              },
            ),
          ],
        ),
      ),
    );
  }
}

// 目标页面
import 'package:flutter/material.dart';

class NextPage extends StatelessWidget {
  final String name;
  final String email;

  NextPage({this.name, this.email});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('目标页面'),
      ),
      body: Padding(
        padding: EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text('姓名: $name'),
            Text('邮箱: $email'),
          ],
        ),
      ),
    );
  }
}

// 主页面
import 'package:flutter/material.dart';
import 'form_page.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: FormPage(),
    );
  }
}