android - 安卓RecyclerView问题

Question

我把RecyclerView搞了个上拉加载更多加载完以后服务器会给我一个list<String>这个list里有20个string然后我在adapter里把这个和原来合并了，那么问题来了notifyItemInserted应该传什么值？传20吗？

Answer 1

notifyiteminserted(mcontentlist.size,list.size)//传２０

Answer 2

The new n pieces of data are inserted into the front of the list
notifyItemRangeInserted(0, n);

Answer 3

notifyItemInserted(int position)这个方法是针对单条数据插入更新操作时使用，即在列表某个position插入一条数据，看你想做什么了。我想你需要的是notifyItemRangeInserted(int positionStart, int itemCount)这个方法，即批量添加，比如你之前已经有20条数据了，上拉加载更多新来的20条数据则是notifyItemRangeInserted(20, 20);

Answer 4

Assume that the previous data is mLastData; the total length position= mLastData.size();
The newly returned data is mNewData, then all the data is mLastData.addAll(mNewData);
Use the area refresh of Recyclerview, notifyItemRangeChanged(position+1, mLastData.size());