源码使用 ：
finalRecyclerView recyclerView = (RecyclerView) findViewById(R.id.main_view); //recycleview
final VirtualLayoutManager layoutManager =new VirtualLayoutManager(this); //关键的 lanoutmanager
final DelegateAdapter delegateAdapter = new DelegateAdapter(layoutManager, true); //管理适配器 用来管理多个条目各自的adapter
recyclerView.setAdapter(delegateAdapter);
final List<DelegateAdapter.Adapter> adapters = new LinkedList<>();
adapters.add(new SubAdapter(this, new LinearLayoutHelper(), 1) {
....
delegateAdapter.setAdapters(adapters); //最后将各个条目的适配器添加到管理适配器中