RecyclerView Supporting Pull Down to Refresh & Pull Up to Load More

activity_sample.xml

        <android.support.v4.widget.SwipeRefreshLayout
            android:id="@+id/swipeRefreshLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/board_topic_list"
                android:name="com.zfdang.zsmth_android.TopicListFragment"
                xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:app="http://schemas.android.com/apk/res-auto"
                xmlns:tools="http://schemas.android.com/tools"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginLeft="0dp"
                android:layout_marginRight="0dp"
                app:layoutManager="LinearLayoutManager"
                android:scrollbars="vertical"
                tools:context=".BoardTopicActivity"
                tools:listitem="@layout/board_topic_item"/>
        </android.support.v4.widget.SwipeRefreshLayout>

EndlessRecyclerOnScrollListener.java

import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;


public abstract class EndlessRecyclerOnScrollListener extends RecyclerView.OnScrollListener {
    public static String TAG = EndlessRecyclerOnScrollListener.class.getSimpleName();

    private int previousTotal = 0; // The total number of items in the dataset after the last load
    private boolean loading = false; // True if we are still waiting for the last set of data to load.
    private int visibleThreshold = 2; // The minimum amount of items to have below your current scroll position before loading more.
    int firstVisibleItem, visibleItemCount, totalItemCount;

    private int current_page = 1;

    private LinearLayoutManager mLinearLayoutManager;

    public EndlessRecyclerOnScrollListener(LinearLayoutManager linearLayoutManager) {
        this.mLinearLayoutManager = linearLayoutManager;
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        if(dy < 0) {
            return;
        }
        // check for scroll down only
        visibleItemCount = recyclerView.getChildCount();
        totalItemCount = mLinearLayoutManager.getItemCount();
        firstVisibleItem = mLinearLayoutManager.findFirstVisibleItemPosition();

        // to make sure only one onLoadMore is triggered
        synchronized (this) {
            if (!loading && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
                // End has been reached, Do something
                current_page++;
                onLoadMore(current_page);
                loading = true;
            }
        }
    }


    public void setLoading(boolean loading) {
        this.loading = loading;
    }

    public abstract void onLoadMore(int current_page);

}

SampleActivity.java

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

public class SampleActivity extends ActionBarActivity {

    private EndlessRecyclerOnScrollListener mScrollListener = null;
    private SwipeRefreshLayout mSwipeRefreshLayout = null;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sample);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(linearLayoutManager);
        
        // enable pull up for endless loading
        mScrollListener = new EndlessRecyclerOnScrollListener(linearLayoutManager) {
            @Override
            public void onLoadMore(int current_page) {
                // do something...
                
                // after loading is done, please call the following method to re-enable onLoadMore
                // usually it should be called in onCompleted() method
                mScrollListener.setLoading(false);
            }
        };
        recyclerView.addOnScrollListener(mScrollListener);
        
        // enable pull down to refresh
        mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                // do something
                
                // after refresh is done, remember to call the following code
                if (mSwipeRefreshLayout != null && mSwipeRefreshLayout.isRefreshing()) {
                    mSwipeRefreshLayout.setRefreshing(false);  // This hides the spinner
                }
            }
        });        
    }
}

one working sample is: https://github.com/zfdang/zSMTH-Android/blob/master/app/src/main/java/com/zfdang/zsmth_android/BoardTopicActivity.java

it is not beautiful enough