在FutureBuilder工作时从另一个API获取响应

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

class MyWidget extends StatelessWidget {
  Future<String> fetchData() async {
    final response = await http.get(Uri.parse('https://api.example.com/data'));
    if (response.statusCode == 200) {
      return response.body;
    } else {
      throw Exception('Failed to fetch data');
    }
  }

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<String>(
      future: fetchData(),
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          return CircularProgressIndicator();
        } else if (snapshot.hasError) {
          return Text('Error: ${snapshot.error}');
        } else {
          final data = jsonDecode(snapshot.data);
          return Text('Data: $data');
        }
      },
    );
  }
}