After having a better Android SDK (currently 0.4.0) it is time to improve the user experience.
What if your gaia files just appear in the same way as other cloud providers? Android offer the Storage Access Framework as a general concept of storage. I implemented a proof of concept for graphite docs. Now on your android device, you can attach a graphite file to your email, you can browse the files in your file explorer and just anything as you do with other files. Of course only as long as you are signed in to Graphite.
The source code is available (very rough) at http://github.com/friedger/android-StorageProvider
Some screenshots of the integration: