我是这样做的，简单而简短:

    recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener()
    {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy)
        {
            if(!recyclerView.canScrollVertically(1) && dy != 0)
            {
                // Load more results here

            }
        }
    });

这些答案都没有考虑到列表是否太小。

这是我一直在使用的一段代码，它在两个方向上都适用于RecycleViews。

@Override
    public boolean onTouchEvent(MotionEvent motionEvent) {

        if (recyclerViewListener == null) {
            return super.onTouchEvent(motionEvent);
        }

        /**
         * If the list is too small to scroll.
         */
        if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
            if (!canScrollVertically(1)) {
                recyclerViewListener.reachedBottom();
            } else if (!canScrollVertically(-1)) {
                recyclerViewListener.reachedTop();
            }
        }

        return super.onTouchEvent(motionEvent);
    }

    public void setListener(RecyclerViewListener recycleViewListener) {
        this.recyclerViewListener = recycleViewListener;
        addOnScrollListener(new OnScrollListener() {

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

                if (recyclerViewListener == null) {
                    return;
                }

                recyclerViewListener.scrolling(dy);

                if (!canScrollVertically(1)) {
                    recyclerViewListener.reachedBottom();
                } else if (!canScrollVertically(-1)) {
                    recyclerViewListener.reachedTop();
                }
            }

        });
    }

我已经创建LoadMoreRecyclerView使用Abdulaziz Noor回答

LoadMoreRecyclerView

public class LoadMoreRecyclerView extends RecyclerView  {

    private boolean loading = true;
    int pastVisiblesItems, visibleItemCount, totalItemCount;
    //WrapperLinearLayout is for handling crash in RecyclerView
    private WrapperLinearLayout mLayoutManager;
    private Context mContext;
    private OnLoadMoreListener onLoadMoreListener;

    public LoadMoreRecyclerView(Context context) {
        super(context);
        mContext = context;
        init();
    }

    public LoadMoreRecyclerView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        init();
    }

    public LoadMoreRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        mContext = context;
        init();
    }

    private void init(){
        mLayoutManager = new WrapperLinearLayout(mContext,LinearLayoutManager.VERTICAL,false);
        this.setLayoutManager(mLayoutManager);
        this.setItemAnimator(new DefaultItemAnimator());
        this.setHasFixedSize(true);
    }

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

        if(dy > 0) //check for scroll down
        {
            visibleItemCount = mLayoutManager.getChildCount();
            totalItemCount = mLayoutManager.getItemCount();
            pastVisiblesItems = mLayoutManager.findFirstVisibleItemPosition();

            if (loading)
            {
                if ( (visibleItemCount + pastVisiblesItems) >= totalItemCount)
                {
                    loading = false;
                    Log.v("...", "Call Load More !");
                    if(onLoadMoreListener != null){
                        onLoadMoreListener.onLoadMore();
                    }
                    //Do pagination.. i.e. fetch new data
                }
            }
        }
    }

    @Override
    public void onScrollStateChanged(int state) {
        super.onScrollStateChanged(state);
    }

    public void onLoadMoreCompleted(){
        loading = true;
    }

    public void setMoreLoading(boolean moreLoading){
        loading = moreLoading;
    }

    public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
        this.onLoadMoreListener = onLoadMoreListener;
    }
}

WrapperLinearLayout

public class WrapperLinearLayout extends LinearLayoutManager
{
    public WrapperLinearLayout(Context context, int orientation, boolean reverseLayout) {
        super(context, orientation, reverseLayout);
    }

    @Override
    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
        try {
            super.onLayoutChildren(recycler, state);
        } catch (IndexOutOfBoundsException e) {
            Log.e("probe", "meet a IOOBE in RecyclerView");
        }
    }
}

//在xml中添加

<your.package.LoadMoreRecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</your.package.LoadMoreRecyclerView>

OnCreate或onViewCreated

mLoadMoreRecyclerView = (LoadMoreRecyclerView) view.findViewById(R.id.recycler_view);
mLoadMoreRecyclerView.setOnLoadMoreListener(new OnLoadMoreListener() {
            @Override
            public void onLoadMore() {
                callYourService(StartIndex);
            }
        });

callYourService

private void callYourService(){
    //callyour Service and get response in any List

    List<AnyModelClass> newDataFromServer = getDataFromServerService();
    //Enable Load More
    mLoadMoreRecyclerView.onLoadMoreCompleted();

    if(newDataFromServer != null && newDataFromServer.size() > 0){
            StartIndex += newDataFromServer.size();

            if (newDataFromServer.size() < Integer.valueOf(MAX_ROWS)) {
                    //StopLoading..
                   mLoadMoreRecyclerView.setMoreLoading(false);
            }
    }
    else{
            mLoadMoreRecyclerView.setMoreLoading(false);
            mAdapter.notifyDataSetChanged();
    }
}

我刚试了一下:

    final LinearLayoutManager rvLayoutManager = new LinearLayoutManager(this);
    rvMovieList = (RecyclerView) findViewById(R.id.rvMovieList);
    rvMovieList.setLayoutManager(rvLayoutManager);
    adapter = new MovieRecyclerAdapter(this, movies);
    rvMovieList.setAdapter(adapter);
    adapter.notifyDataSetChanged();

    rvMovieList.addOnScrollListener(new OnScrollListener() {
        boolean loading = true;
        int pastVisiblesItems, visibleItemCount, totalItemCount;
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);

            visibleItemCount = rvLayoutManager.getChildCount();
            totalItemCount = rvLayoutManager.getItemCount();
            pastVisiblesItems = rvLayoutManager.findFirstVisibleItemPosition();

            int lastitem = visibleItemCount + pastVisiblesItems;

            if ( lastitem == totalItemCount
                    && page < total_pages
                    && !keyword.equals("") ) {
                // hit bottom ..

                String strnext;
                if (page == total_pages - 1) {
                    int last = total_results - (page * 20);
                    strnext = String.format(getResources().getString(R.string.next), last);
                } else {
                    strnext = String.format(getResources().getString(R.string.next), 20);
                }
                btNext.setText(strnext);
                btNext.setVisibility(View.VISIBLE);
            } else {
                btNext.setVisibility(View.INVISIBLE);
            }

            if(pastVisiblesItems == 0 &&  page > 1){
                // hit top
                btPrev.setVisibility(View.VISIBLE);
            } else {
                btPrev.setVisibility(View.INVISIBLE);
            }
        }
    });

我搞不清楚在哪里加载真或假，所以我试图删除它，这段代码工作如我所料。

有一个方法public void setOnScrollListener (RecyclerView。OnScrollListener监听器)在https://developer.android.com/reference/android/support/v7/widget/RecyclerView.html#setOnScrollListener%28android.support.v7.widget.RecyclerView.OnScrollListener%29。使用这个

编辑:

在onScrollListener中重写onScrollStateChanged方法并执行此操作

            boolean loadMore = firstVisibleItem + visibleItemCount >= totalItemCount;

            //loading is used to see if its already loading, you have to manually manipulate this boolean variable
            if (loadMore && !loading) {
                 //end of list reached
            }

我使用了recyclerview。adapter的onBindViewHolder方法。

适配器:

public interface OnViewHolderListener {
    void onRequestedLastItem();
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {

    ...

    if (position == getItemCount() - 1) onViewHolderListener.onRequestedLastItem();
}

片段(或活动):

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    contentView = inflater.inflate(R.layout.comments_list, container, false);
    recyclerView = (RecyclerView) mContentView.findViewById(R.id.my_recycler_view);
    adapter = new Adapter();
    recyclerView.setAdapter(adapter);

    ...

    adapter.setOnViewHolderListener(new Adapter.OnViewHolderListener() {
        @Override
        public void onRequestedLastItem() {
            //TODO fetch new data from webservice
        }
    });
    return contentView;
}