如何获取不在JSON中的列名，但它仍然是我在android中使用PHP收到的数组元素

问题描述：

How can a column name, which is not in JSON but still it is an array element that I have received using PHP in android, be fetched? This is my PHP file:

   {
        "items": [
        {
          "v_id": "1",
          "v_name": "Hotel Girija",
          "v_address": "Vijayanagar Colony, Municipal Colony, Pune,         Maharashtra 411030",
          "v_avg_rating": "3",
          "v_image": "http://i1.walesonline.co.uk/whats-on/food-drink-news/article7978981.ece/ALTERNATES/s615/MAin.jpg",
          "v_contact1": "8456217412"
        },
        {
          "v_id": "4",
          "v_name": "Pataleshwar hotel",
          "v_address": "Some addresss again",
          "v_avg_rating": "5",
          "v_image": "https://www.whatsuplife.in/gurgaon/blog/wp-content/uploads/2015/09/Chaat-Chowk.jpg",
          "v_contact1": "5452232554"
        }
      ],
      "sub_image": "http://www.asiansinamerica.org/wp- content/uploads/2016/08/Asian-and-Chinese-Food.jpg",
      "success": 1
    }

I have to get all values of key items using this :

    JSONObject root = new JSONObject(items);
    JSONArray arr = root.getJSONArray("items");
    for (int i = 0; i < arr.length(); i++)
    {
        JSONObject obj = (JSONObject) arr.get(i);
        path = "" + obj.optString("v_image");
        // path = "http://" + path.replaceAll("\\s+", "%20");
        al_subcatdetl_id.add("" + obj.optString("v_id"));
        al_subcatdetl_name.add("" + obj.optString("v_name"));
        al_subcatdetl_addr.add("" + obj.optString("v_address"));
        al_subcatdetl_img.add("" + path);
        al_subcatdetl_rating.add("" + obj.optString("v_avg_rating"));

       ///al_subject_img.add(obj.getString("sub_image"));
    }

But i don't have any idea how to fetch sub_image, which is outside of items. How can this be achieved?

列名如何，不是JSON，但它仍然是我使用PHP收到的数组元素在android中，被提取？这是我的PHP文件： p>

  {
“items”：[
 {
“v_id”：“1”，
  “v_name”：“Hotel Girija”，
“v_address”：“Vijayanagar Colony，Municipal Colony，Pune，Maharashtra 411030”，
“v_avg_rating”：“3”，
“v_image”：“http：// i1  .walesonline.co.uk / whats-on / food-drink-news / article7978981.ece / ALTERNATES / s615 / MAin.jpg“，
”v_contact1“：”8456217412“
}，
 {
”v_id  “：”4“，
”v_name“：”Pataleshwar hotel“，
”v_address“：”有些地址“，
”v_avg_rating“：”5“，
”v_image“：”https：//  www.whatsuplife.in/gurgaon/blog/wp-content/uploads/2015/09/Chaat-Chowk.jpg",nn“v_contact1”：“5452232554”
} 
 
]，
“sub_image”：“  http://www.asiansinamerica.org/wp-  content / uploads / 2016/08 / Asian-and-Chinese-Food.jpg“，
”“成功”：1 
} 
  code>  pre> 
 
 我必须得到 使用以下所有键项 em>的值： p> 
 
 
  JSONObject root = new JSONObject（items）; 
 JSONArray arr = root.getJSONArray（“items”  ）; 
 for（int i = 0; 我＆lt;  arr.length（）;  i ++）
 {
 JSONObject obj =（JSONObject）arr.get（i）; 
 path =“”+ obj.optString（“v_image”）; 
 // path =“http：//”+ path  .replaceAll（“\\ s +”，“％20”）; 
 al_subcatdetl_id.add（“”+ obj.optString（“v_id”））; 
 al_subcatdetl_name.add（“”+ obj.optString（“v_name”  ））; 
 al_subcatdetl_addr.add（“”+ obj.optString（“v_address”））; 
 al_subcatdetl_img.add（“”+ path）; 
 al_subcatdetl_rating.add（“”+ obj.optString（“v_avg_rating”）  ））; 
 
 ///al_subject_img.add(obj.getString("sub_image"));
} 
  code>  pre> 
 
 但我没有 任何想法如何获取 sub_image  em>，这是 items  em>之外的。 如何实现？ p> 
  div>

答

In these case you can directly get string from JSONObject

try {    
JSONObject root = new JSONObject(items);
String  subimage = root.getString("sub_image");
} catch(Exception ex){

}

如何获取不在JSON中的列名，但它仍然是我在android中使用PHP收到的数组元素

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