The [DividerItemDecoration](<https://developer.android.com/reference/android/support/v7/widget/DividerItemDecoration.html>)
is a RecyclerView.ItemDecoration
that can be used as a divider between items.
DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(context,
mLayoutManager.getOrientation());
recyclerView.addItemDecoration(mDividerItemDecoration);
It supports both orientation using DividerItemDecoration.VERTICAL
and DividerItemDecoration.HORIZONTAL
.