阅读在Android的JSON数组 [英] Reading a Json Array in android

问题描述

我想读一个JSON数组。这是我的code。

I'm trying to read a JSON array. Here is my code.

        JSONArray jArray = new JSONArray(jsonString);

        System.out.println("*****JARRAY*****"+jArray.length());
        for(int i=0;i<jArray.length();i++){


                JSONObject json_data = jArray.getJSONObject(i);
                Log.i("log_tag","_id"+json_data.getInt("account")+
                        ", mall_name"+json_data.getString("name")+
                        ", location"+json_data.getString("number")+
                        ", telephone"+json_data.getString("url")+
                        ",----"+json_data.getString("balance")+
                        ",----"+json_data.getString("credit")+
                        ",----"+json_data.getString("displayName")
                );

        }

和我的示例JSON文件语法如下，

And my sample JSON files syntax is as follows,

{
    "list": [
        {
            "account": 1,
            "name": "card",
            "number": "xxxxx xxxx xxxx 2002",
            "url": "http://www.google.com",
            "balance": 1.0,
            "credit": 1.0,
            "displayName": "hsbc bank" 
        },
        {
            "account": 2,
            "name": "card2",
            "number": "xxxxx xxxx xxxx 3003",
            "url": "http://www.google.com",
            "balance": 2.0,
            "credit": 2.0,
            "displayName": "nsb bank" 
        } 
    ],
    "count": 2
}

它在前面一个大括号。当我尝试执行此code座它给出了一个错误说

It has a curly brace in front. When i try to execute this code block it gives an error saying

一个JSONArray文本必须以'['   在....性格1

A JSONArray text must start with '[' at character 1 of....

有没有人遇到过这样的问题吗？任何帮助将大大AP preciated。 请给我一个样品code座如果能。 先谢谢了。

Has anyone encountered a problem like this? Any help would be greatly appreciated. Please show me a sample code block if can. Thanks in advance.

推荐答案

一个JSON对象开始于一个 {并用结束} 而JSON数组以一个 [和结尾的] 。

A JSON Object starts with a { and ends with a } while a JSON Array starts with a [ and ends with a ].

在你的情况，改变你的code有一个的JSONObject 代替。

In your case, change your code to have a JSONObject instead.

JSONObject json = new JSONObject(jsonString);
JSONArray jArray = json.getJSONArray("list");

System.out.println("*****JARRAY*****" + jArray.length());

for(int i=0; i<jArray.length(); i++){
    JSONObject json_data = jArray.getJSONObject(i);

    Log.i("log_tag", "_id" + json_data.getInt("account") +
        ", mall_name" + json_data.getString("name") +
        ", location" + json_data.getString("number") +
        ", telephone" + json_data.getString("url") +
        ",----" + json_data.getString("balance") +
        ",----" + json_data.getString("credit") +
        ",----" + json_data.getString("displayName")
    );
}

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