I use an extension taifunfile. In debug mode, the files are copied and can be opened without problems. But in the compiled application apk error occurs when i try to copy. "Sorry, File to copy does not exist". Also an example from http://puravidaapps.com/file.php not working.
BUT i have magic file that copying in the debug and via apk. o_O and no otherpdf's are not copied, only magic.