你可以在瀑布流所在的activity中按老师讲的回掉接口把土司改成删除该位置的item就可以了

 @Override
            public void onItemClick(View view, int position) {

                mAdapter.deleteData(position);
                //Toast.makeText(StaggeredGridLayoutManagerActivity.this,"

Click:"+position,Toast.LENGTH_SHORT).show();
            }