public void setRefreshing(boolean refreshing) {
   if (mSwipeRefreshLayout == null) {
     return;
   }
   if (!refreshing) {
     mIsRequestDataRefresh = false;
     // 防止刷新消失太快,让子弹飞一会儿
     mSwipeRefreshLayout.postDelayed(() -> mSwipeRefreshLayout.setRefreshing(false), 1000);
   } else {
     requestDataRefresh();
   }
 }
 private void requestDataRefresh() {
   mIsRequestDataRefresh = true;
   mSwipeRefreshLayout.setRefreshing(true);
   loadData();
 };