比如我有一个listview
里面有几条记录
http://www.text1.text/1.txt
http://www.text1.text/2.txt
http://www.text1.text/3.txt
http://www.text1.text/4.txt
http://www.text1.text/5.txt
http://www.text1.text/6.txt
http://www.text1.text/7.txt怎样才能将每个文件都下载下来呢?