在Flutter中解析Json的列表

import 'dart:convert';

void main() {
  String jsonStr = '[{"name": "John", "age": 30}, {"name": "Jane", "age": 25}]';
  List<dynamic> jsonList = jsonDecode(jsonStr);
  
  for (var item in jsonList) {
    String name = item['name'];
    int age = item['age'];
    print('Name: $name, Age: $age');
  }
}

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Json List Example'),
        ),
        body: FutureBuilder<List<dynamic>>(
          future: fetchData(),
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              List<dynamic> jsonList = snapshot.data!;
              return ListView.builder(
                itemCount: jsonList.length,
                itemBuilder: (context, index) {
                  String name = jsonList[index]['name'];
                  int age = jsonList[index]['age'];
                  return ListTile(
                    title: Text('Name: $name, Age: $age'),
                  );
                },
              );
            } else if (snapshot.hasError) {
              return Text('Error: ${snapshot.error}');
            } else {
              return CircularProgressIndicator();
            }
          },
        ),
      ),
    );
  }
}