Android刷新Recyclerview延迟

我有一个简单的布局和一个回收站。 在onCreateView方法中,我设置了Recyclerview:

  @Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_overview, container, false);
    recyclerView = (RecyclerView) rootView.findViewById(R.id.rv_overview);
    list = new ArrayList<>();
    LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(layoutManager);

    list = getOverviewList(getActivity());
    adapter = new OverviewRecyclerAdapter(getActivity(), list);
    recyclerView.setAdapter(adapter);
    final Context context = getActivity();
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            list =getOverviewList(context);
            adapter.notifyDataSetChanged();
        }
    }, 1000);
    return rootView;
}

正如您所看到的,Recyclerview需要在创建视图后一秒钟刷新。我试图用处理器实现这一点。但是处理程序中的代码不会刷新Recyclerview。但显然应该这样。