public override void BehindTapped(object sender, EventArgs e)
        {
            if (HashMap == null || HashMap.GetIndex(2) == -1)
            {
                return;
            }
            DisableGeolocator();
            ToIssoView = true;
            var issoViewActivity = new IssoViewActivity(ListOfIssos[HashMap.GetIndex(2)].CIsso);

            Navigation.PushAsync(issoViewActivity);
        }
        public override void CallIssoView(Isso isso)
        {
            var issoViewActivity = new IssoViewActivity(isso.CIsso);

            Navigation.PushAsync(issoViewActivity);
        }