Problems with getting values from JSON object

Question

I'm trying to get data once user logged in successfully but I never get any of results, what I am doing is next:

// response is my request to server
JSONObject obj = new JSONObject(response);
Log.d("RESPONSE",obj.toString());

so in log I do see values, like:

04-19 11:28:16.729: D/RESPONSE(3162): {"data":[{"loses":3,"username":"benedict","level":1,"strength":15,"experience":null,"gold":10,"password":"benedict","intelligence":5,"agility":10,"wins":5}],"status":true}

but once I try to read username for example like this:

String username = obj.getString("username");

The code above ^ gives me nothing in my string.. Any help how I can retrieve data from JSONObject? Thanks!

Yep, I indeed need to, first time trying and dont really have alot of time to go throught tutorial so I was trying here. If you know any good tutorial please suggest, I can google random too :) — Marko Niciforovic
– Marko Niciforovic, Commented Apr 19, 2013 at 9:32

Rahul · Accepted Answer · 2013-04-19 09:25:40Z

4

That is because the username is present in the data object, which happens to be an JSONArray. Get the data array from the response object, traverse through each JSONObject in the array, and from each object, extract your username.

Something like this:-

JSONObject obj = new JSONObject(response);
JSONArray data = obj.getJSONArray("data");
for(int i=0;i<data.length();i++){
    JSONObject eachData = data.getJSONObject(i);
    System.out.println("Username= "+ eachData.getString("username"));
}

answered Apr 19, 2013 at 9:25

Rahul

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2 Comments

Marko Niciforovic Over a year ago

Thank you very much I will try it right now, first time working with json :)

Marko Niciforovic Over a year ago

million thanks, its working fine! need to wait 2 mins then accept answer

throrin19 · Accepted Answer · 2013-04-19 09:27:33Z

2

your field username is in array data. To access into this try :

JSONObject obj = new JSONObject(response);
JSONArray array = obj.getJSONArray("data");

for(int i = 0; i < array.length(); ++i){
    JSONObject data = array.getJSONObject(i);
    String username = data.getString("username");
}

answered Apr 19, 2013 at 9:27

throrin19

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Comments

Hardik Joshi · Accepted Answer · 2013-04-19 09:29:15Z

2

You need to first get JSONArray which is data :

    JSONArray data = null;
        data = json.getJSONArray("data");
         for(int i = 0; i < data.length(); i++){
                JSONObject c = data.getJSONObject(i);
         String username = c.getString("username");
}

You can get idea about parsing JSON from HERE

answered Apr 19, 2013 at 9:29

Hardik Joshi

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Comments

Android · Accepted Answer · 2013-04-19 09:32:13Z

1

Try this...

try {

        JSONObject object = new JSONObject(response);
        JSONArray Jarray = object.getJSONArray("data");

        for (int i = 0; i < Jarray.length(); i++) {

           JSONObject Jasonobject = Jarray.getJSONObject(i);
           String loose= Jasonobject.getString("loses");
           String username=Jasonobject.getString("username");
          ....... 
          ........



        }

    } catch (JSONException e) {

        Log.e("log_txt", "Error parsing data " + e.toString());
    }

answered Apr 19, 2013 at 9:32

Android

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