public override bool OnOptionsItemSelected(IMenuItem item)
        {
            switch (item.ItemId)
            {
            case Resource.Id.exercise_edit:
                StartEditView(false);
                return(true);

            case Resource.Id.exercise_delete:
                MyDatabase.DeleteExercise(itemId);
                Finish();
                return(true);

            case Resource.Id.training_edit:
                StartEditView(false);
                return(true);

            case Resource.Id.training_add_exercises:
                StartCheckableListView();
                break;

            case Resource.Id.training_delete:
                MyDatabase.DeleteTraining(itemId);
                Finish();
                return(true);

            case Resource.Id.plan_edit:
                StartEditView(false);
                return(true);

            case Resource.Id.plan_delete:
                MyDatabase.DeletePlan(itemId);
                Finish();
                return(true);

            case Android.Resource.Id.Home:
                OnBackPressed();
                break;
            }
            return(base.OnOptionsItemSelected(item));
        }