I'm wanting to create an android app that gathers information and then uploads to a server -- however I don't want people to be able to edit the file before it's sent to the server. I can do the first part of it, but am unable to do the second part. Can anyone tell me the best way to go about this? I don't mind if the user knows what's in the file, just don't want them editing it and then uploading their edited information to the server.