Before anyone points me to this link http://developer.android.com/guide/topics/data/backup.html, let me tell you that while I think is really great it also lacks some features I would like to have in my application.
I'd like to have a list of several backups (not just one in the cloud) and the option to backup/restore the file from another cloud storage (say Dropbox).
I don't know where the helpers store the files and how (if I can) restore from another location.
The guide its not very clear about this.