Possible Duplicate:
How to list my app downloads
I created an android app that displays a list of books which users can download them, I made the downloads in the directory /mnt/sdcard/myapp/download
File sdCard = Environment.getExternalStorageDirectory();
File dir = new File (sdCard.getAbsolutePath() + "/myapp/Download");
dir.mkdirs();
File file = new File(dir, "filename");
, but I'm wondering how I can list the books that the user has downloaded.