Create custom Model/Bean Class and create ArrayList of Model/Bean class insted of String.
Suppose you create Model Class with name MyData and params are id,name,email.

Create Adapter with ArrayList.

set Text to CustomView from Mydata object and when you click on any List Item then write code to get object of MyData ArryList from clicked item position. and do what do do with MyData.

For more specific answer please elaborate your requirement .

Here is the code to create json array and json object.

try {
            // outer json object
            JSONObject mainObject = new JSONObject();
            JSONArray arr=new JSONArray();
            for(int i=0;i<size;i++)// size is listview size
            {
                JSONObject object=new JSONObject();
                object.put("id","id"+i);// set id here 
                object.put("name","name"+i); //set name here
                object.put("value","value"+i); // set value here
                arr.put(object);
            }
            mainObject.put("Array",arr);
       }catch(JsonException e)
      {
      } 

If you want complete jsonobject than use mainObject If you want only jsonArray then use arr