public PersonGridViewAdapter(PersonGroupActivity act)
            {
                longPressed   = false;
                personIdList  = new List <String>();
                personChecked = new List <Boolean>();
                activity      = act;

                ICollection <String> personIdSet = StorageHelper.GetAllPersonIds(activity.personGroupId, activity);

                foreach (String personId in personIdSet)
                {
                    personIdList.Add(personId);
                    personChecked.Add(false);
                }
            }
 public MultiChoiceModeListener(PersonGroupActivity act)
 {
     this.activity = act;
 }