public void addContacts(String url, ContactList contactList, boolean completed) throws Exception {
   String requestString = GsonUtils.getJsonWithExposeFromObject(contactList, ContactList.class);
   if (completed) {
     url = url + "?completed=true";
   }
   httpRequestUtils.postData(url, "application/json", null, requestString);
 }
 public String getContactsInCurrentPlatform() {
   return httpRequestUtils.getResponse(
       getPlatformContactUrl() + "?mtexter=true", "application/json", "application/json");
 }
 public String getGoogleContacts(int page) {
   return httpRequestUtils.getResponse(
       getGoogleContactUrl() + "?page=" + page, "application/json", "application/json");
 }