从JSON中获取数据并添加到initState()上的列表中

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

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

class _MyWidgetState extends State<MyWidget> {
  List<dynamic> dataList = [];

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

  Future<void> loadJsonData() async {
    String jsonString = await rootBundle.loadString('assets/data.json');
    List<dynamic> jsonData = json.decode(jsonString);
    setState(() {
      dataList = jsonData;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('JSON Data'),
      ),
      body: ListView.builder(
        itemCount: dataList.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(dataList[index]['title']),
            subtitle: Text(dataList[index]['description']),
          );
        },
      ),
    );
  }
}