Android adding JSONObject to JSONArray with Key

Question

Hi I'm trying to make an alphabetised list with headers so i want an array of JSONObjects with the key of "B" for example inside that object i'm going to be adding an array of JSONObjects that contains contacts whose name begins with the key or "B"

does anyone know how to add a JSONObject to a JSONArray with a key? so that i can retrieve specific Objects

Answer 1

To reach your requirement your JSON object should like this

{
   "A":[
      {
         "name":"aaa"
      },
      {
         "name":"aba"
      }
   ],
   "B":[
      {
         "name":"bbb"
      },
      {
         "name":"bba"
      }
   ]
}

A pseudo implementation for above Object would look like this:

//Maint list object
    JSONObject objMainList = new JSONObject();

    //prepare item array for "A"
    JSONArray arrForA = new JSONArray();
    JSONObject itemA = new JSONObject();
    itemA.put("name", "aaa");
    arrForA.put(itemA);

  //prepare item array for "B"
    JSONArray arrForB = new JSONArray();
    JSONObject itemB = new JSONObject();
    itemB.put("name", "bbb");
    arrForB.put(itemB);

    //Finally add item arrays for "A" and "B" to main list with key
    objMainList.put("A", arrForA);
    objMainList.put("B", arrForB);

UPDATE : to check if "A" or "B".. is exists or not

if(objMainList.has("A")){

    }

Answer 2

Try out this way:

{"Contacts": //JSONObject
  {
    "B"://JSONArray..
    [
        {"ContactName":sdfsdf,"ID":900,"Number":1368349}, 
        {"ContactName":adsdfd,"ID":1900,"Number":136856},  
         {"ContactName":adglkhdofg,"ID":600,"Number":136845}
   ],
  "C":[
         {"ContactName":alkghoi,"ID":900,"Number":1368349},
         {"ContactName":wetete,"ID":1900,"Number":136856}, 
         {"ContactName":dfhtfh,"ID":600,"Number":136845}
     ]
      .....//and so on.. 
      }
}