public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Use this to return your custom view for this Fragment View view = inflater.Inflate(Resource.Layout.fragment_layout, null); var callsViewModel = new CallsViewModel(AnalysisActivity.AllCalls, "DateTime"); itemList = new ListViewItemsBuilder().GetItems(callsViewModel); //listview and updates multiLevelRecyclerView = (MultiLevelRecyclerView)view.FindViewById(Resource.Id.MultiLevelView); multiLevelRecyclerView.SetLayoutManager(new LinearLayoutManager(Activity)); //itemList = recursivePopulateFakeData(0, 24); myAdapter = new MyAdapter(Activity, itemList, multiLevelRecyclerView); multiLevelRecyclerView.SetAdapter(myAdapter); multiLevelRecyclerView.ToggleItemOnClick = false; multiLevelRecyclerView.Accordion = true; multiLevelRecyclerView.OpenTill(0); FloatingActionButton fab = view.FindViewById <FloatingActionButton>(Resource.Id.fab); fab.Click += (se, ev) => { //Toast.MakeText(Activity,"clicked!",ToastLength.Long).Show(); RawSortDialog dialog = new RawSortDialog(); dialog.SortMethodSelected += UpdateItems; dialog.Show(Activity.SupportFragmentManager, "SortBy dialog"); }; return(view); }