How do I pull the string array from this json object?

Question

I am trying to get a list of available numbers from the following json object, using the class from org.json

    {
        "response":true,
        "state":1,
        "data":
        {
            "CALLERID":"81101099",
            "numbers":
                [
                       "21344111","21772917",
                       "28511113","29274472",
                       "29843999","29845591",
                       "30870001","30870089",
                       "30870090","30870091"
                ]
        }
    }

My first steps were, after receiving the json object from the web service:

jsonObj = new JSONObject(response);
jsonData = jsonObj.optJSONObject("data");

Now, how do I save the string array of numbers?

score 43 · Accepted Answer · edited May 25 '17 at 12:27

43

use:

jsonObj = new JSONObject(response);
jsonData = jsonObj.optJSONObject("data");
JSONArray arrJson = jsonData.getJSONArray("numbers");
String[] arr = new String[arrJson.length()];
for(int i = 0; i < arrJson.length(); i++)
    arr[i] = arrJson.getString(i);

edited May 25 '17 at 12:27

Andrii Abramov

10,019
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answered Feb 21 '12 at 06:59

jeet

29,001
6
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1

Except for the fact that there's no method in JSONArray named getLength(did you mean length() ? ) this was great - thanks :) – CodePrimate Feb 21 '12 at 08:44
If you're specifying strings, it looks like you have to cast the value of arrJson.get(i) to String. – Laurent Mar 17 '15 at 06:23
It shows null pointer exception. `getString(i)` retrieves the value in the form of string. But in OP's case the JSONArray's elements do not have value. – NullByte08 May 02 '20 at 21:47

score 3 · Answer 2 · answered Feb 21 '12 at 06:58

3

you need to use JSONArray to pull data in an array

JSONObject jObj= new JSONObject(your_json_response);
JSONArray array = jObj.getJSONArray("data");

answered Feb 21 '12 at 06:58

waqaslam

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score 1 · Answer 3 · answered Jul 15 '16 at 05:09

My code is for getting "data":

public void jsonParserArray(String json) {

        String [] resultsNumbers = new String[100];

        try {
            JSONObject jsonObjectGetData = new JSONObject(json);
            JSONObject jsonObjectGetNumbers = jsonObjectGetData.optJSONObject("results");
            JSONArray jsonArray = jsonObjectGetNumbers.getJSONArray("numbers");
            for (int i = 0; i < jsonArray.length(); i++) {
                resultsNumbers[i] = jsonArray.getString(i);
            }
        } catch (JSONException e) {
            e.printStackTrace();
            Log.e(LOG_TAG, e.toString());
        }
    }

score 0 · Answer 4 · answered Feb 21 '12 at 06:56

0

Assuming that you are trying to get it in a javascript block, Try something like this

var arrNumber = jsonData.numbers;

answered Feb 21 '12 at 06:56

ahsan_cse2004

182
4
16

How do I pull the string array from this json object?

4 Answers4

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