依賴:implementation ‘com.jcodecraeer:xrecyclerview:1.2.0’

 mRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
                    @Override
                    public void onRefresh() {
                        new Handler().postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                mRecyclerView.refreshComplete();
                                Toast.makeText(getActivity(),"111",Toast.LENGTH_SHORT).show();
                            }
                        },2000);
                    }

                    @Override
                    public void onLoadMore() {
                        new Handler().postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                mRecyclerView.loadMoreComplete();
                                Toast.makeText(getActivity(),"222",Toast.LENGTH_SHORT).show();
                            }
                        },2000);
                    }
                });