The file size will be rounded up to the "sector" size of the storage medium. I don't offhand know how you find that value. (Could be anywhere from 256 to 16K.) And there is the overhead in the directory itself for storage of the file name and other file info -- probably on the order of file_name_length (maybe times 2) plus 64 bytes. Don't know whether this is factored into the cache size or not.
On Nov 3, 1:31 pm, Rob Truxler <[email protected]> wrote: > Hi folks. I'm trying to manage the files that I store in a local cache. I > download files, then delete them after the total file size in the cache > exceeds a certain number of bytes. What I'm shooting for right now is > something simple: setting the max cache size to be 1 MB, or 1*1024*1024 > bytes = 1048576 bytes. I have a method that gets the cache directory, then > does a listFiles() on that File to get all children of the directory. I have > a flat cache structure, no subdirectories, so simply calling f.length() on > every child should give me my total cache size right? > > Well what I'm finding is that the amount I count is about 0.9 of size > reported in Manage Applications > Application Info for my app, in the Cache > section. > > Am I making a bad assumption that File.length() will actually return to me > the size, in bytes, of a file on disk? I also wonder also if disk space in > the Cache directory is being used by Android at all for some reason I'm > unaware of. > > Any advice is good advice! > Thanks > Rob -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
