measureChildWithMargins
Measure a child view using standard measurement policy, taking the padding of the parent RecyclerView, any added item decorations and the child margins into account.
If the RecyclerView can be scrolled in either dimension the caller may pass 0 as the widthUsed or heightUsed parameters as they will be irrelevant.
Parameters
child
Child view to measure
widthUsed
Width in pixels currently consumed by other views, if relevant
heightUsed
Height in pixels currently consumed by other views, if relevant