public override void OnActivityCreated(Bundle savedInstanceState)
        {
            base.OnActivityCreated(savedInstanceState);
            _buildings = Activity.Buildings();
            _listAdapter = new BuildingArrayAdapter(Activity, _buildings);
            ;
            ListAdapter = _listAdapter;

            if (savedInstanceState != null)
            {
                _selectedBuildingIndex = savedInstanceState.GetSelectedBuildingIndex();
            }
            ListView.ChoiceMode = ChoiceMode.Single;
            ShowBuilding(_selectedBuildingIndex);
        }