About the characters: Reading here , it seems that - not a reserved character, so it can be used. > however reserved so cannot be used.
About maximum length: since I could not find anything specific for Android, and since java does not limit the length of the file name, it works with (as you can see here ), I would say that the maximum length is similar to the most widely used limit, which is 255 bytes.
Jong Nov 03 '12 at 1:21 2012-11-03 01:21
source share