How to add dividers and spaces between items in RecyclerView?

Question

This is an example of how it could have been done previously in the ListView class, using the divider and dividerHeight parame

Answer 1

Just add

recyclerView.addItemDecoration(new DividerItemDecoration(getContext(),
                DividerItemDecoration.VERTICAL));

Also you may need to add the dependency
compile 'com.android.support:recyclerview-v7:27.1.0'

EDIT:

For customizing it a little bit you can add a custom drawable:

DividerItemDecoration itemDecorator = new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL);
itemDecorator.setDrawable(ContextCompat.getDrawable(getContext(), R.drawable.divider));

You are free to use any custom drawable, for instance: