java - 来自json android的多维数组

Question

我这里有这个 json:

[
        {
            "ID": "2",
            "Item Description": "Data removed for protection",
            "Link": "Data removed for protection",
            "Image": "Data removed for protection",
            "Valid From": "Data removed for protection",
            "Valid To": "Data removed for protection"
        },
        {
            "ID": "3",
            "Item Description": "Data removed for protection",
            "Link": "Data removed for protection",
            "Image": "Data removed for protection",
            "Valid From": "Data removed for protection",
            "Valid To": "Data removed for protection"
        },
{
            "ID": "4",
            "Item Description": "Data removed for protection",
            "Link": "Data removed for protection",
            "Image": "Data removed for protection",
            "Valid From": "Data removed for protection",
            "Valid To": "Data removed for protection"
        }
    ]

因此，我将其下载到名为 jArray 的 JSONObject 中。然后我将其转换为 JSONArray ，如下所示:

JSONArray json_array = new JSONArray(jArray);

但是，每当我尝试像这样访问它时:json_array[0][0]，IDE 就会抛出错误并显示:需要数组类型；发现:'org.json.JSONArray'。

现在，请不要误会我的意思，但是 JSONArray 不应该以相同的方式访问多维方面吗？

Answer 1

JSONArray 和普通的 java 数组不一样。JSONArray 是一个不同的 java 对象。 @Kon 的回答提供了 JSONArray 的基本思想。

如果您想从 JSONArray 访问数据，您可以循环遍历它以获取每个 JSONObject，然后从那里检索数据，例如

JSONArray json_array = new JSONArray(jArray);

    for (int i = 0; i < json_array.length() ; i++) {
              try{
                    JSONObject object1 = jsonArray.getJSONObject(i);
                    int id = object1.getInt("ID");
                    String itemDescription = object1.getString("Item Description");     
                    String link = object1.getString("Link");
                    .....//and so on        
                 }
              catch(Exception e){
                    e.printStackTrace();
                    }
                 }