Flutter :如何使用json和listview导航到新屏幕

import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:fluttertoast/fluttertoast.dart';

class ScreenPage extends StatefulWidget {
  final String jsonData;

  ScreenPage({Key key, @required this.jsonData}) : super(key: key);

  @override
  _ScreenPageState createState() => _ScreenPageState();
}

class _ScreenPageState extends State<ScreenPage> {
  List<dynamic> data;

  @override
  void initState() {
    super.initState();
    data = jsonDecode(widget.jsonData);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('New Screen'),
      ),
      body: ListView.builder(
        itemCount: data.length,
        itemBuilder: (BuildContext context, int index) {
          return ListTile(
            title: Text(data[index]['title']),
            subtitle: Text(data[index]['subtitle']),
            onTap: () {
              Fluttertoast.showToast(
                msg: 'You tapped on ${data[index]['title']}',
                toastLength: Toast.LENGTH_SHORT,
              );
            },
          );
        },
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MyApp(),
  ));
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  Future<List<dynamic>> fetchData() async {
    final response = await http.get('https://api.example.com/data');
    if (response.statusCode == 200) {
      return jsonDecode(response.body);
    } else {
      throw Exception('Failed to load data');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter JSON ListView Navigation'),
      ),
      body: Center(
        child: RaisedButton(
          child: Text('Fetch Data'),
          onPressed: () {
            fetchData().then((data) {
              Navigator.push(
                context,
                MaterialPageRoute(
                  builder: (context) => ScreenPage(jsonData: jsonEncode(data)),
                ),
              );
            }).catchError((error) {
              Fluttertoast.showToast(
                msg: 'Failed to fetch data',
                toastLength: Toast.LENGTH_SHORT,
              );
            });
          },
        ),
      ),
    );
  }
}

dependencies:
  flutter:
    sdk: flutter
  http: ^0.13.3
  fluttertoast: ^8.0.8