blocks|key|1207092|text|var+object=+json.decode(response.body)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1207093|对象变量必须采用重复语法。|unstyled|1207094|+print(object["data"]["comments"][index]["replies"]|1207095|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>var object= json.decode(response.body)
</code></pre>
object variable must be in repeated syntax
<pre><code> print(object[&quot;data&quot;][&quot;comments&quot;][index][&quot;replies&quot;]
</code></pre>

blocks|key|1222524|text|从internet获取数据|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1222525|此菜谱使用以下步骤：|1222526|添加http包。|ordered-list-item|1222527|使用http包发出网络请求。|1222528|将响应转换为自定义Dart对象。|1222529|用颤振法获取并显示数据。|1222530|dependencies:+http:+<latest_version>|CODE|1222531|导入http包|1222532|import+'package:http/http.dart'+as+http;|code-block|syntax|javascript|1222533|此外，在您的AndroidManifest.xml文件中，添加Internet权限。|1222534|
<uses-permission+android:name="android.permission.INTERNET"+/>|1222535|发出网络请求|1222536|Future<YourModel>+fetchData()+async+{
++final+response+=+await+http
++++++.get(Uri.parse('yourapiurl'));

++if+(response.statusCode+==+200)+{
++++//+If+the+server+did+return+a+200+OK+response,
++++//+then+parse+the+JSON.
++++return+YourModel.fromJson(jsonDecode(response.body));
++}+else+{
++++//+If+the+server+did+not+return+a+200+OK+response,
++++//+then+throw+an+exception.
++++throw+Exception('Failed+to+load+data');
++}
}|1222537|获取数据|1222538|class+_MyAppState+extends+State<MyApp>+{
++late+Future<YourModel>+yourAlbum;

++@override
++void+initState()+{
++++super.initState();
++++yourModel+=+fetchData();
++}
++//+···
}|1222539|显示数据|1222540|FutureBuilder<YourModel>(
++future:+futureModel,
++builder:+(context,+snapshot)+{
++++if+(snapshot.hasData)+{
++++++return+Text(snapshot.data!.title);
++++}+else+if+(snapshot.hasError)+{
++++++return+Text('${snapshot.error}');
++++}

++++//+By+default,+show+a+loading+spinner.
++++return+const+CircularProgressIndicator();
++},
)|1222541|entityMap^0|0|9|0|0|0|0|0|0|0|10|0|0|0|0|0|0|6|0|0|0|4|0|0|0|4|0|0^^$0|@$1|2|3|4|5|6|7|1I|8|@$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1L|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1M|8|@]|D|@]|E|$]]|$1|K|3|L|5|J|7|1N|8|@]|D|@]|E|$]]|$1|M|3|N|5|J|7|1O|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1P|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1Q|8|@$9|1R|A|1S|B|S]]|D|@]|E|$]]|$1|T|3|U|5|6|7|1T|8|@]|D|@]|E|$]]|$1|V|3|W|5|X|7|1U|8|@]|D|@]|E|$Y|Z]]|$1|10|3|11|5|6|7|1V|8|@]|D|@]|E|$]]|$1|12|3|13|5|X|7|1W|8|@]|D|@]|E|$Y|Z]]|$1|14|3|15|5|6|7|1X|8|@$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|16|3|17|5|X|7|20|8|@]|D|@]|E|$Y|Z]]|$1|18|3|19|5|6|7|21|8|@$9|22|A|23|B|C]]|D|@]|E|$]]|$1|1A|3|1B|5|X|7|24|8|@]|D|@]|E|$Y|Z]]|$1|1C|3|1D|5|6|7|25|8|@$9|26|A|27|B|C]]|D|@]|E|$]]|$1|1E|3|1F|5|X|7|28|8|@]|D|@]|E|$Y|Z]]|$1|1G|3|-4|5|6|7|29|8|@]|D|@]|E|$]]]|1H|$]]

Fetch data from the internet
This recipe uses the following steps:
<ol>
<li>Add the http package.</li>
<li>Make a network request using the http package.</li>
<li>Convert the response into a custom Dart object.</li>
<li>Fetch and display the data with Flutter.</li></li>
</ol>
 
<code>dependencies: http: &lt;latest_version&gt;</code>
import the http package
<pre><code>import 'package:http/http.dart' as http;
</code></pre>
Additionally, in your AndroidManifest.xml file, add the Internet permission.
<pre><code>&lt;!-- Required to fetch data from the internet. --&gt;
&lt;uses-permission android:name=&quot;android.permission.INTERNET&quot; /&gt;
</code></pre>
Make a network request
<pre><code>Future&lt;YourModel&gt; fetchData() async {
 final response = await http
 .get(Uri.parse('yourapiurl'));

 if (response.statusCode == 200) {
 // If the server did return a 200 OK response,
 // then parse the JSON.
 return YourModel.fromJson(jsonDecode(response.body));
 } else {
 // If the server did not return a 200 OK response,
 // then throw an exception.
 throw Exception('Failed to load data');
 }
}
</code></pre>
Fetch the data
<pre><code>class _MyAppState extends State&lt;MyApp&gt; {
 late Future&lt;YourModel&gt; yourAlbum;

 @override
 void initState() {
 super.initState();
 yourModel = fetchData();
 }
 // ···
}
</code></pre>
Display the data
<pre><code>FutureBuilder&lt;YourModel&gt;(
 future: futureModel,
 builder: (context, snapshot) {
 if (snapshot.hasData) {
 return Text(snapshot.data!.title);
 } else if (snapshot.hasError) {
 return Text('${snapshot.error}');
 }

 // By default, show a loading spinner.
 return const CircularProgressIndicator();
 },
)
</code></pre>

I have this response from a restapi and wnat to access the replies inside of comments i do have the model from <a href="https://app.quicktype.io" rel="nofollow noreferrer">quicktype.io</a> but don't know how to iterate and fetch the data.
<pre><code> &quot;data&quot;: {
&quot;_id&quot;: &quot;61ee65fd92a48c7b10779f24&quot;,
&quot;topicName&quot;: &quot;Test Topic&quot;,
&quot;description&quot;: &quot;&lt;p&gt;Test Discussion&lt;/p&gt;&quot;,
&quot;createdByName&quot;: &quot;Admin&quot;,
&quot;comments&quot;: [
 {
 &quot;_id&quot;: &quot;622740a70fdfbb1bdd00232b&quot;,
 &quot;comment&quot;: &quot;post commnet test&quot;,
 &quot;commentedById&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;,
 &quot;user&quot;: [
 {
 &quot;title&quot;: &quot;Mr&quot;,
 &quot;firstName&quot;: &quot;John&quot;,
 &quot;lastName&quot;: &quot;Cart&quot;,
 &quot;userID&quot;: &quot;USER1000022&quot;,
 &quot;_id&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;
 }
 ],
 &quot;replies&quot;: []
 },
 {
 &quot;_id&quot;: &quot;620d05382773643acd49177b&quot;,
 &quot;comment&quot;: &quot;test message&quot;,
 &quot;commentedById&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;,
 &quot;commentedByName&quot;: &quot;Mr. John Cart&quot;,
 &quot;user&quot;: [
 {
 &quot;title&quot;: &quot;Mr&quot;,
 &quot;firstName&quot;: &quot;John&quot;,
 &quot;lastName&quot;: &quot;Cart&quot;,
 &quot;userID&quot;: &quot;USER1000022&quot;,
 &quot;_id&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;
 }
 ],
 &quot;replies&quot;: [
 {
 &quot;_id&quot;: &quot;6227351b0fdfbb099800232a&quot;,
 &quot;comment&quot;: &quot;test msg&quot;,
 &quot;commentedById&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;,
 &quot;commentedByName&quot;: &quot;Mr, john cart&quot;,
 &quot;replyUser&quot;: [
 {
 &quot;title&quot;: &quot;Mr&quot;,
 &quot;firstName&quot;: &quot;John&quot;,
 &quot;lastName&quot;: &quot;cart&quot;,
 &quot;userID&quot;: &quot;USER1000022&quot;,
 &quot;_id&quot;: &quot;611cb5ecaf1a1bbc858d4d13&quot;
 }
 ]
 }
 ],
 },
</code></pre>
any help or documentations/ suggestions / guides would be helpfull
Thank you

How to parse/ iterate and fetch a multi nested json array in flutter

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我有来自restapi和wnat的响应来访问注释中的回复，我有来自的模型，但不知道如何迭代和获取数据。 "data": {"_id": "61ee65fd92a48c7b10779f24","topicName": "Test Topic","description": "Test Discussion...

问如何在颤振中解析/迭代多个嵌套的json数组
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在颤振中解析/迭代多个嵌套的json数组EN