private static void AdapterViewSelectedItemPositionChanged(AdapterView sender, AttachedMemberChangedEventArgs <int> args)
{
if (sender.GetBindingMemberValue(AttachedMembers.AdapterView.ScrollToSelectedItem).GetValueOrDefault(true) || sender is Spinner)
{
sender.SetSelection(args.NewValue);
}
var adapter = GetAdapter(sender) as IItemsSourceAdapter;
if (adapter != null)
{
sender.SetBindingMemberValue(AttachedMembers.AdapterView.SelectedItem, adapter.GetRawItem(args.NewValue));
}
}
private static void SetSelectedIndexAdapterView(AdapterView adapter, int index)
{
var oldValue = adapter.GetBindingMemberValue(AttachedMembers.AdapterView.ScrollToSelectedItem);
if (oldValue != null && !oldValue.Value)
{
adapter.SetBindingMemberValue(AttachedMembers.AdapterView.SelectedItemPosition, index);
}
else
{
adapter.SetBindingMemberValue(AttachedMembers.AdapterView.ScrollToSelectedItem, false);
adapter.SetBindingMemberValue(AttachedMembers.AdapterView.SelectedItemPosition, index);
adapter.SetBindingMemberValue(AttachedMembers.AdapterView.ScrollToSelectedItem, oldValue);
}
}