koobas.hobune.stream
Unity UI Drag and Drop - Dragged items are being hovered by their Dropzones
Hello. I'm actually learning the new Unity UI System, and I want to make a simple Dragging in the Grid Layout Group. Dragging is working fine, but Item is under the slot while dragging.
//DragHandler.cs
public void OnBeginDrag(PointerEventData eventData)
{
startParent = transform.parent;
transform.SetParent(slotPanel.transform.parent);
transform.SetSiblingIndex(1);
}
public void OnDrag(PointerEventData eventData)
{
transform.position = Input.mousePosition;
}
public void OnEndDrag(PointerEventData eventData)
{
if (transform.parent == slotPanel.transform.parent)
{
transform.SetParent(startParent);
transform.GetComponent<RectTransform>().anchoredPosition = Vector2.zero;
}
else if(transform.GetComponent<RectTransform>().anchoredPosition != Vector2.zero)
{
transform.GetComponent<RectTransform>().anchoredPosition = Vector2.zero;
}
}
//DropZone.cs
public void OnDrop(PointerEventData eventData)
{
eventData.pointerDrag.transform.SetParent(transform);
eventData.pointerDrag.transform.GetComponent<RectTransform>().anchoredPosition = Vector2.zero;
}
I have been trying to set the SiblingIndex in the OnBeginDrag method to bigger than 1. They the draggedItem is displaying well, but OnDrop method doesn't call
Just try setting the parent during the drag to something further up in the hierarchy; it should probably be set to the top-level canvas. Worked for me, without any SetSiblingIndex fudging.
