Get jsonarray key name

Question

I need to get a key name of JsonArray, so JSON looks like this, please not, that JSON is starting with array brackets, and inside it it has objects, that was made i guess because back end will have the ability to add objects.

[
  {
    "tehnology": [ ]
  },
  {
    "science": []
  }
]

So i need to get the names from it "technology" and "science", because json can dynamically change, how can I implement it?

please put proper json string your json string is not proper the first brackets cant be square brackets. Check online json parsing sites — Pankaj, May 23 '15 at 12:27
@Clairvoyant First brackets could be array brackets, jsonlint.com says my JSON is valid. — k.nadonenko, May 23 '15 at 12:29
I think you should check [this](http://stackoverflow.com/questions/20321212/get-json-array-keys-in-android) — Kunu, May 23 '15 at 12:32

score 9 · Accepted Answer · answered May 23 '15 at 12:31

9

The JSONArray contains JSONObjects. Retrieve every JSONObject and use keys() to access the key defined in every JSONObject

 JSONArray jArray = new JSONArray(response);       
 for (int i = 0; i < jArray.length(); i++) {
      JSONObject object = jArray.optJSONObject(i);
      Iterator<String> iterator = object.keys();
      while(iterator.hasNext()) {
        String currentKey = iterator.next();
      }
 }

answered May 23 '15 at 12:31

Blackbelt

156,034
29
297
305

how to do it by using GSON ? – Sundar G Aug 23 '17 at 10:24
@SundarG do you mean in a custom deserializer ? – Blackbelt Aug 23 '17 at 10:27
@Blackbelt Yes?? – Sundar G Aug 23 '17 at 10:33

Get jsonarray key name

1 Answers1

Linked