title: Android Facebook SDK How to get all friends list who installed my app
body: <p>i succeeded to get friends who installed my app <strong>BUT</strong>  i have a case which is that some friends who already installed my app ,I could not find them when  i request to get the list of friends who installed my app . i guess the are not listed due to their Facebook privacy . is  it right ? or what is the problem ?</p>
  
  <p><strong>Here is my request code</strong> </p>
  
  <pre><code>        public void find_facebook_friends()
  {            
  
      GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(), new GraphRequest.GraphJSONObjectCallback()
      {
          @Override
          public void onCompleted(JSONObject object, GraphResponse response)
          {
  
              JSONObject json = response.getJSONObject();
  
              try
              {
                  String friend_name = null;
                  String friend_id = null;
                  if (json != null)
                  {
                      String js = json.toString();
                      String res = response.toString();
                      JSONObject c = response.getJSONObject();
                      JSONObject myfriends = null;
  
                      try
                      {
                          myfriends = c.getJSONObject("friends");
                      }
                      catch (JSONException e)
                      {
                          e.printStackTrace();
                      }
  
                      if (myfriends != null)
                      {
                          JSONArray mydata = myfriends.getJSONArray("data");
                          facebookfriends_namesArray = null;
                          facebookfriends_idArray = null;
                          for (int i = 0; i &lt; mydata.length(); i++)
                          {
  
                              JSONObject jsonobject = mydata.getJSONObject(i);
                              friend_id = jsonobject.getString("id");
                              friend_name = jsonobject.getString("name");
                          }
                      }
  
                  }
              }
              catch (JSONException e)
              {
                  e.printStackTrace();
  
              }
          }
      });
      Bundle parameters = new Bundle();
      parameters.putString("fields", "id,name,link,email,picture,gender,friends, birthday,first_name,last_name,locale,timezone,updated_time,verified,friendlists");
    request.setParameters(parameters);
      request.executeAsync();
  }
  </code></pre>