private void Heroescollectionview_Scrolled(object sender, ItemsViewScrolledEventArgs e)
{
var line = e.CenterItemIndex;
var transY = Convert.ToInt32(SearchView.TranslationY);
if (transY == 0 &&
e.VerticalDelta > 15)
{
var trans = SearchView.Height + SearchView.Margin.Top;
// need contentpage var safeInsets = On<Xamarin.Forms.PlatformConfiguration.iOS>().SafeAreaInsets();
ImageService.Instance.SetPauseWork(false);
Task.WhenAll(
SearchView.TranslateTo(0, -(trans + 8), 250, Easing.CubicIn),
SearchView.FadeTo(0, 200));
}
else if (transY != 0 &&
e.VerticalDelta < 0 &&
Math.Abs(e.VerticalDelta) > 10)
{
Task.WhenAll(
SearchView.TranslateTo(0, 0, 250, Easing.CubicOut),
SearchView.FadeTo(1, 200));
ImageService.Instance.SetPauseWork(true);
}
//else if(transY == 0 &&
// e.VerticalDelta <=1)
//{
// Task.WhenAll(
// SearchView.TranslateTo(0, 0, 250, Easing.CubicOut),
// SearchView.FadeTo(1, 200));
//}
//precisão maior para validar.
bool IsScrollUp = e.VerticalDelta < 0;
if (IsScrollUp)
{
ImageService.Instance.SetPauseWork(true);
}
else
{
ImageService.Instance.SetPauseWork(false);
}
}