Get filename of file from web directory

I'm trying to simply get the filename of a file from an online directory.开发者_运维问答 The directory only has one file in it. The filename is actually the version number. If the filename is "newer" than the file that I already have stored on the android, it will download the file and replace it. I already know how to download the file. I'm not sure if android has some sort of built-in directory lister or if I need to create a PHP file that will display the files, then somehow open and read that in and use that as my path. Any help would be greatly appreciated.

You'll want to write that PHP script to return the file name. With that, you can do a straight download from the server.