解决问题：recyclerview未滑动到顶部就进行下拉刷新
解决方法：对recyclerview进行滑动监听，然后禁用和启用刷新控件。

第一种方式：

      recyclerview.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
           
                //解决滑动冲突
                boolean enable=recyclerView.getChildCount() == 0 || recyclerView.getChildAt(0).getTop() >= 0;
                mRefresh.setEnabled(enable);
            }
        });

第二种方式：

      recyclerview.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                //解决滑动冲突
                mRefresh.setEnabled(manager.findFirstVisibleItemPosition() == 0);
            }
        });

第三种方式：

      recyclerview.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                //解决滑动冲突
              int topRowVerticalPosition = (recyclerView == null || recyclerView.getChildCount() == 0) ? 0 : recyclerView.getChildAt(0).getTop();
               mRefresh.setEnabled(topRowVerticalPosition >= 0);
            }
        });

任君挑选，目测第二种最好用。