先给出解决方案：

在调用notifyDataSetChanged()后，使用一下方法收缩一次。

// i 为更新的子view的position，如果全部更新，遍历全部子view

* resultsListView.collapseGroup(i); //收起

* resultsListView.expandGroup(i); //展开

* 两个方法后，数据才能在界面上正常刷新

代码中的用法：

public void addTheReplyData(CommentExpandableListView expandableListView, ReplyDetailBean replyDetailBean, int groupPosition){

if(replyDetailBean!=null){

Log.e("yuan", "该刷新回复列表了:getReplyList = "+commentBeanList.get(groupPosition).getReplyList());

        if(commentBeanList.get(groupPosition).getReplyList() !=null ){

Log.e("yuan", "addTheReplyData: >>>>>replyList不为空 size = "+commentBeanList.get(groupPosition).getReplyList().size() );

            commentBeanList.get(groupPosition).getReplyList().add(replyDetailBean);

        }else {

Log.e("yuan", "addTheReplyData: >>>>>replyList为空 " );

            List replyList =new ArrayList<>();

            replyList.add(replyDetailBean);

            commentBeanList.get(groupPosition).setReplyList(replyList);

        }

notifyDataSetChanged();

        //

        for(int i =0; i

expandableListView.expandGroup(i);

        }

//

    }else {

throw new IllegalArgumentException("回复数据为空!");

    }

}