detachViewAt
Temporarily detach a child view.
LayoutManagers may want to perform a lightweight detach operation to rearrange views currently attached to the RecyclerView. Generally LayoutManager implementations will want to use detachAndScrapView so that the detached view may be rebound and reused.
If a LayoutManager uses this method to detach a view, it mustreattach or fully remove the detached view before the LayoutManager entry point method called by RecyclerView returns.
Parameters
index
Index of the child to detach