如何在flutter中显示来自Http get请求的所有数据？

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

Future<List<dynamic>> fetchData() async {
  final response = await http.get(Uri.parse('http://example.com/api/data'));
  if (response.statusCode == 200) {
    return json.decode(response.body);
  } else {
    throw Exception('Failed to load data');
  }
}

class MyWidget extends StatefulWidget {
  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  Future<List<dynamic>> futureData;

  @override
  void initState() {
    super.initState();
    futureData = fetchData();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Data from HTTP GET Request'),
      ),
      body: Center(
        child: FutureBuilder<List<dynamic>>(
          future: futureData,
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              return ListView.builder(
                itemCount: snapshot.data.length,
                itemBuilder: (context, index) {
                  return ListTile(
                    title: Text(snapshot.data[index]['title']),
                    subtitle: Text(snapshot.data[index]['description']),
                  );
                },
              );
            } else if (snapshot.hasError) {
              return Text("${snapshot.error}");
            }
            return CircularProgressIndicator();
          },
        ),
      ),
    );
  }
}