Exemplo n.º 1
0
        public AllSubjects()
        {
            InitializeComponent();
            SubjectList.BindingContext = subjectViewModel;

            var sortTapGestureRecognizer = new TapGestureRecognizer();

            sortTapGestureRecognizer.Tapped += (s, e) => {
                if (currentSort == 1)
                {
                    currentSort                = 2; //z-a
                    SortIcon.Source            = "azup.png";
                    subjectViewModel           = new SubjectViewModel(subjectViewModel.SortZA());
                    SubjectList.BindingContext = subjectViewModel;
                }
                else if (currentSort == 2)
                {
                    currentSort                = 3; //5-0
                    SortIcon.Source            = "stardown.png";
                    subjectViewModel           = new SubjectViewModel(subjectViewModel.Sort50());
                    SubjectList.BindingContext = subjectViewModel;
                }
                else if (currentSort == 3)
                {
                    currentSort                = 4; //0-5
                    SortIcon.Source            = "starup.png";
                    subjectViewModel           = new SubjectViewModel(subjectViewModel.Sort05());
                    SubjectList.BindingContext = subjectViewModel;
                }
                else
                {
                    currentSort                = 1; //a-z
                    SortIcon.Source            = "azdown.png";
                    subjectViewModel           = new SubjectViewModel(subjectViewModel.SortAZ());
                    SubjectList.BindingContext = subjectViewModel;
                }
            };
            SortIcon.GestureRecognizers.Add(sortTapGestureRecognizer);
        }