DividerItemDecoration is a RecyclerView.ItemDecoration that can be used as a divider between items of a LinearLayoutManager. It supports both HORIZONTAL and VERTICAL orientations.
RecyclerView mRecyclerView = FindViewById<RecyclerView>(Resource.Id.recycleview);
mRecyclerView.AddItemDecoration(new DividerItemDecoration(mRecyclerView.Context, DividerItemDecoration.Vertical));
See the tutorial:https://developer.android.com/reference/android/support/v7/widget/DividerItemDecoration.html
@Jarvan thank you so much.
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