java - Get Key and values from JSONObject

Question

I am trying to extract Key and values from my JSONObject. But i am not able to do that. Here is the JSON:

[{"id":["5"]},{"Tech":["Java"]}]

It is a String initially. I have converted that to JSONObject using :

JSONObject jsonObj = new JSONObject("[{"id":["5"]},{"Tech":["Java"]}]");

Then i am trying to get the key and value by:

jsonObj.getString("id");

But its giving me null. Can anyone help me out here?

Answer 1

Try this:

try {
    JSONArray jsonArr = new JSONArray("[{"id":["5"]},{"Tech":["Java"]}]");

    for (int i = 0; i < jsonArr.length(); i++) {
        JSONObject jsonObj = jsonArr.getJSONObject(i);
        String k = jsonObj.keys().next();
        Log.i("Info", "Key: " + k + ", value: " + jsonObj.getString(k));
    }

} catch (JSONException ex) {
    ex.printStackTrace();
}