问Android SectionedRecyclerViewAdapter节头

EN

public class Section1 extends Section {
    public Section1 () {
        super(
                R.layout.section_1_header,
                R.layout.section_1_item,
                R.layout.section_1_loading,
                R.layout.section_1_failed
        );
    }

    .....
}


.....


Section1 section1 = new Section1();
section1.setState(Section.State.LOADING);

SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter();
sectionAdapter.addSection(section1);

recyclerView.setAdapter(sectionAdapter);