實現思路：設定滑動監聽，滑動左邊recycler，右側recycler跟著移動相應距離即可(注意：條目高度要相等，如果新增分割線，注意分割線高度)

private void syncScroll(final RecyclerView rlvLeft, final RecyclerView rlvRight) {
    rlvLeft.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
public void onScrolled(RecyclerView recyclerView, int 
 
dx, int dy) {
            if (recyclerView.getScrollState() != RecyclerView.SCROLL_STATE_IDLE) {
                // note: scrollBy() not trigger OnScrollListener
                // This is a known issue. It is caused by the fact that RecyclerView does not know how LayoutManager will handle the scroll or if it will handle it at all.
 
rlvRight.scrollBy(dx, dy);
}
        }
    });
rlvRight.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            if (recyclerView.getScrollState() != RecyclerView.SCROLL_STATE_IDLE) {
                rlvLeft
 
.scrollBy(dx, dy);
}
        }
    });
}