private async void OnLoad() { try { moviesListView.IsRefreshing = true; var movies = await Service.GetMoviesByCinemaId(Cinema.Id); MovieList = new ObservableCollection <Movie>(movies.Where(m => m.Title != null)); moviesListView.ItemsSource = MovieList; } catch (Exception E) { await DisplayAlert("Error", $"{E} - {E.Message}", "Exit"); AppControls.CloseApp(); } finally { moviesListView.IsRefreshing = false; } }