json file reader flutter

1Future<String>_loadFromAsset() async {
2  return await rootBundle.loadString("assets/quiz.json");
3}
4
5Future parseJson() async {
6    String jsonString = await _loadFromAsset();
7    final jsonResponse = jsonDecode(jsonString);
8}

1import 'package:flutter/material.dart';
2import 'dart:convert';
3
4import 'package:flutter/services.dart';
5
6void main() {
7  runApp(MyApp());
8}
9
10class MyApp extends StatelessWidget {
11  @override
12  Widget build(BuildContext context) {
13    return MaterialApp(
14      // Hide the debug banner
15      debugShowCheckedModeBanner: false,
16      title: 'Kindacode.com',
17      home: HomePage(),
18    );
19  }
20}
21
22class HomePage extends StatefulWidget {
23  @override
24  _HomePageState createState() => _HomePageState();
25}
26
27class _HomePageState extends State<HomePage> {
28  List _items = [];
29
30  // Fetch content from the json file
31  Future<void> readJson() async {
32    final String response = await rootBundle.loadString('assets/sample.json');
33    final data = await json.decode(response);
34    setState(() {
35      _items = data["items"];
36    });
37  }
38
39  Widget build(BuildContext context) {
40    return Scaffold(
41      appBar: AppBar(
42        centerTitle: true,
43        title: Text(
44          'Kindacode.com',
45        ),
46      ),
47      body: Padding(
48        padding: const EdgeInsets.all(25),
49        child: Column(
50          children: [
51            ElevatedButton(
52              child: Text('Load Data'),
53              onPressed: readJson,
54            ),
55
56            // Display the data loaded from sample.json
57            _items.length > 0
58                ? Expanded(
59                    child: ListView.builder(
60                      itemCount: _items.length,
61                      itemBuilder: (context, index) {
62                        return Card(
63                          margin: EdgeInsets.all(10),
64                          child: ListTile(
65                            leading: Text(_items[index]["id"]),
66                            title: Text(_items[index]["name"]),
67                            subtitle: Text(_items[index]["description"]),
68                          ),
69                        );
70                      },
71                    ),
72                  )
73                : Container()
74          ],
75        ),
76      ),
77    );
78  }
79}