extracting value from JSON array

Question

I want to extract a value from JSON below using JSONObject. The value is inside data and in this case is 3:

{
  "columns": [
    "count(n)"
  ],
  "data": [
    [
      3
    ]
  ]
}

I tried JSONArray jsonMainArr = jsonRes.getJSONArray("data"); and it's displaying [[3]] , how to extract that number 3 ?

Answer 1

data element holds nested array.

Since you already have this array in

JSONArray jsonMainArr = jsonRes.getJSONArray("data");

you can get its first (and only) inner array [3] with

jsonMainArr.getJSONArray(0)

Now you need to get its only element. You can do it with get(0) , or to get more precise return type getInt(0) .

This should work fine for you

int value = jsonRes.getJSONArray("data").getJSONArray(0).getInt(0);