private int InsertOntoView(View view, DragItem item)
{
var positionEntered = GetListPositionForView(view);
var correctedPosition = positionEntered;
// If the view already has a translation, we need to adjust the position
// If the view has a positive translation, that means that the current position
// is actually one index down then where it started.
// If the view has a negative translation, that means it actually moved
// up previous now we will need to move it down.
if (view.TranslationY > 0)
{
correctedPosition += 1;
}
else if (view.TranslationY < 0)
{
correctedPosition -= 1;
}
// If the current index of the dragging item is bigger than the target
// That means the dragging item is moving up, and the target view should
// move down, and vice-versa
var translationCoef = item.Index > correctedPosition ? 1 : -1;
// We translate the item as much as the height of the drag item (up or down)
var translationTarget = view.TranslationY + (translationCoef * item.View.Height);
ObjectAnimator anim = ObjectAnimator.OfFloat(view, "TranslationY", view.TranslationY, translationTarget);
anim.SetDuration(100);
anim.Start();
return(correctedPosition);
}
public bool OnItemLongClick(AdapterView parent, View view, int position, long id)
{
var selectedItem = ((IList)_element.ItemsSource)[(int)id];
DragItem dragItem = new DragItem(NormalizeListPosition(position), view, selectedItem);
var data = ClipData.NewPlainText(string.Empty, string.Empty);
View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
view.Visibility = ViewStates.Invisible;
view.StartDragAndDrop(data, shadowBuilder, dragItem, 0);
return(true);
}