解決問題：recyclerview未滑動(dòng)到頂部就進(jìn)行下拉刷新
解決方法：對(duì)recyclerview進(jìn)行滑動(dòng)監(jiān)聽，然后禁用和啟用刷新控件。

第一種方式：

      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);
           
                //解決滑動(dòng)沖突
                boolean enable=recyclerView.getChildCount() == 0 || recyclerView.getChildAt(0).getTop() >= 0;
                mRefresh.setEnabled(enable);
            }
        });

第二種方式：

      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);
                //解決滑動(dòng)沖突
                mRefresh.setEnabled(manager.findFirstVisibleItemPosition() == 0);
            }
        });

第三種方式：

      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);
                //解決滑動(dòng)沖突
              int topRowVerticalPosition = (recyclerView == null || recyclerView.getChildCount() == 0) ? 0 : recyclerView.getChildAt(0).getTop();
               mRefresh.setEnabled(topRowVerticalPosition >= 0);
            }
        });

任君挑選，目測(cè)第二種最好用。