Stuck Parsing nested JSON Array

Question

I'm stuck parsing a nested JSON Array. This should be fairly simple but I can't seem to get it to work.

I have a JSON Array like below:

    {"currentPage":0,
      "totalPages":1,
      "totalSize":1,
      "first":true,
      "last":true,
      "list"[{"date":"2018-11-07T09:34:25.042+0000",
      "lastUpdated":"2018-11-07T09:34:25.266+0000",
      "id"130674,
      "active":true,
      "address":null,
      "storeMobileNumbers": 
      [{"id":130676,"mobile":"+201008005090","version":0
      }]
  }]
}

I'm trying to get the address from the list first, then get the values from storeMobileNumbers.

I have a POJO class for the list, and now I have created a POJO class for the StoreMobileNumbers.

This is what I have right now:

      Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
    Type collectionType = new TypeToken<List<MyStore>>(){}.getType();
    Type collection2 = new TypeToken<List<StoreMobileNumber>>({}.getType();
    JSONObject obj = new JSONObject(json);
       if (obj.has("list")) {
         String myList = obj.get("list").toString();
         list1 = gson.fromJson(myList, collectionType);

         JSONArray obj1 = new JSONArray(list1);
         JSONObject numbersObject = obj1.toJSONObject(obj1);
         String mobileList = 
            numbersObject.get("storeMobileNumbers").toString();
            mobileNumbers = gson.fromJson(mobileList, collection2);
        }

My StoreMobileNumbersClass:

   public class StoreMobileNumber{

   public Long id;
   public String mobile;

   }

So far, my efforts have been unsuccessful. I'm getting the following error:

   org.json.JSONException: No value for storeMobileNumbers

Can someone help me see what I'm missing here?

incorrect json :(

Vishal kumar singhvi
– Vishal kumar singhvi

2019-01-28 14:06:47 +00:00
Commented Jan 28, 2019 at 14:06 — Vishal kumar singhvi
– Vishal kumar singhvi, Commented Jan 28, 2019 at 14:06

Vishal Arora · Accepted Answer · 2019-01-28 14:01:17Z

1

Change to following -

String myList = obj.get("list").toString();
     list1 = gson.fromJson(myList, collectionType); // delete this not required

     JSONArray obj1 = new JSONArray(list1);
     JSONObject numbersObject = obj1.getJsonObject(0); // change this to get first object from the JsonArray
     String mobileList = 
        numbersObject.get("storeMobileNumbers").toString();
        mobileNumbers = gson.fromJson(mobileList, collection2);

answered Jan 28, 2019 at 14:01

Vishal Arora

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