Android i JSON citanje podataka sa linka

Code:

new Thread(new Runnable() { 
            public void run(){

      
                
                
                try
                {
                     HttpClient httpclient = new DefaultHttpClient();
                     HttpPost httppost = new HttpPost("http://traveliusa.pl/api/test/test");
                     //httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                     HttpResponse response = httpclient.execute(httppost);
                     HttpEntity entity = response.getEntity();
                     is = entity.getContent();
                }
                catch(ClientProtocolException ex)
                {
                    Log.i("ERROR", "Error in connetion with server!" +ex.getMessage());
                }
                catch(IOException ex)
                {
                    Log.i("ERROR", "2Error in connetion with server!" +ex.getMessage());
                }
                
                
                try
                {
                     BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
                     StringBuilder sb = new StringBuilder();
                     String line = null;
                     while ((line = reader.readLine()) != null){
                         sb.append(line + "\n");
                     }
                           
                        is.close();
                 
                     result=sb.toString();
                }
                catch(Exception ex)
                {
                    Log.i("ERROR", "Error reading server response!" +ex.getMessage());
                }
                 
                // Parse the JSON data.
                try
                {
                     JSONArray jArray = new JSONArray(result);
                     for(int i=0;i<jArray.length();i++)
                     {
                          JSONObject json_data = jArray.getJSONObject(i);
                          String tt = json_data.getString("test");
                          Log.i("INFO", json_data.getString("test"));   
                     }
                }
                catch(JSONException ex)
                {
                    Log.i("ERROR", "Error parsing JSON data!" +ex.getMessage());
                }        


            }
    }).start();