方法1

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                Log.i(TAG, "--------------------------------------");
                if(mRecyclerView.canScrollVertically(1)){
                    Log.i(TAG, "direction 1: true");
                }else {
                    Log.i(TAG, "direction 1: false");//滑动到底部
                }
                if(mRecyclerView.canScrollVertically(-1)){
                    Log.i(TAG, "direction -1: true");
                }else {
                    Log.i(TAG, "direction -1: false");//滑动到顶部
                }
            }
        });

方法2

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                Log.i(TAG, "--------------------------------------");
                LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
                int firstCompletelyVisibleItemPosition = layoutManager.findFirstCompletelyVisibleItemPosition();
                Log.i(TAG, "firstCompletelyVisibleItemPosition: "+firstCompletelyVisibleItemPosition);
                if(firstCompletelyVisibleItemPosition==0)
                    Log.i(TAG, "滑动到顶部");

                int lastCompletelyVisibleItemPosition = layoutManager.findLastCompletelyVisibleItemPosition();
                Log.i(TAG, "lastCompletelyVisibleItemPosition: "+lastCompletelyVisibleItemPosition);
                if(lastCompletelyVisibleItemPosition==layoutManager.getItemCount()-1)
                    Log.i(TAG, "滑动到底部");
            }
        });