将JSon数据显示为DataTable Flutter

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

class MyDataTable extends StatefulWidget {
  @override
  _MyDataTableState createState() => _MyDataTableState();
}

class _MyDataTableState extends State<MyDataTable> {
  List<Map<String, dynamic>> jsonData = [];

  Future<void> fetchData() async {
    // 使用 http 包或其他网络请求库从服务器获取 JSON 数据
    final response = await http.get(Uri.parse('https://example.com/data.json'));

    if (response.statusCode == 200) {
      // 将获取到的 JSON 数据解析为 Dart 对象
      final List<dynamic> data = json.decode(response.body);

      setState(() {
        jsonData = List<Map<String, dynamic>>.from(data);
      });
    } else {
      throw Exception('Failed to fetch data');
    }
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('JSON to DataTable'),
      ),
      body: jsonData.isEmpty
          ? Center(child: CircularProgressIndicator())
          : SingleChildScrollView(
              child: DataTable(
                columns: jsonData[0].keys.map((String key) {
                  return DataColumn(
                    label: Text(key),
                  );
                }).toList(),
                rows: jsonData.map((Map<String, dynamic> data) {
                  return DataRow(
                    cells: data.values.map((dynamic value) {
                      return DataCell(
                        Text(value.toString()),
                      );
                    }).toList(),
                  );
                }).toList(),
              ),
            ),
    );
  }
}

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