title: Why my new service displays nothing?
body: <p>I am working on a small project using an android for the frontend and laravel for the backend. I have a <code>listview</code> linked to a mysql database. Initially it all worked well. However, when I changed to a new URL, nothing is displayed whatever I do and no error is displayed. How can I fix this? This is my code:  </p>
  
  <pre><code> public GetHttpResponse(Context context)
      {
          this.context = context;
      }
  
      @Override
      protected void onPreExecute()
      {
          super.onPreExecute();
      }
  
      @Override
      protected ArrayList&lt;subjects&gt; doInBackground(String... arg0)
      {
          HttpServicesClass httpServiceObject = new 
      HttpServicesClass(arg0[0]);
          ArrayList&lt;subjects&gt; subjectsList = new ArrayList&lt;subjects&gt;();
          try
             {
              httpServiceObject.ExecutePostRequest();
              if(httpServiceObject.getResponseCode() == 200)
              {
                  ResultHolder = httpServiceObject.getResponse();
                  if(ResultHolder != null)
                  {
                      JSONArray jsonArray = null;
                      try {
                          jsonArray = new JSONArray(ResultHolder);
                          JSONObject jsonObject;
                          subjects subjects;
               for(int i=0; i&lt;jsonArray.length(); i++)
                          {
                              subjects = new subjects();
                             jsonObject = jsonArray.getJSONObject(i);
                             if(valueInteger == 
           jsonObject.getInt("tache_id") )
                              {
                                   subjects.avis = 
           jsonObject.getDouble("avg_avis_intervention");
  
           subjects.nom=jsonObject.getString("nom");
                                    subjects.SubjectName = 
           jsonObject.getDouble("tarif");
                                  //  subjects.technicien_id = 
           jsonObject.getString("technicien_id");
                                     subjectsList.add(subjects);
  
                      }}}
                      catch (JSONException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      }
                  }
              }
          }
          catch (Exception e)
          {
          }
          return subjectsList;
      }
  </code></pre>
  
  <p>and my new JSON output </p>
  
  <pre><code>[
    {
      "nom": "teck",
      "tache_id": 2,
      "tarif": 100,
      "avg_avis_interventions": null
    }
  ]
  </code></pre>