如何从RecycleView Android获取过滤数据的新位置

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements Filterable {
    private List<String> mData;  // 原始数据
    private List<String> mFilteredData;  // 过滤后的数据

    // 构造函数等其他代码省略

    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults results = new FilterResults();
                mFilteredData = new ArrayList<>();

                // 根据constraint对数据进行过滤
                for (String item : mData) {
                    if (item.contains(constraint)) {
                        mFilteredData.add(item);
                    }
                }

                results.values = mFilteredData;
                results.count = mFilteredData.size();
                return results;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                if (results.count > 0) {
                    mData = (List<String>) results.values;
                    notifyDataSetChanged();
                } else {
                    mData = new ArrayList<>();
                    notifyDataSetChanged();
                }
            }
        };
    }

    // 其他代码省略
}