The scenario:
I have a android app running my in cellphone. I´m the owner of this app. I have a google-glass synced with this cellphone. I´m developing a my app for google-glass using the new GDK launch a few weeks ago.
I want to send a data from glass to cellphone and then receive a answer. No internet connection is necessary, so i´m planning to use Bluetooth to this data communication.
I can create a Bluetooth socket connection, however this will obligate me to manage it. There is no android high level abstraction that permit me to call a service or a activity directly on the cellphone?
AFAIK, there's no direct pipe between them, the glass is basically a phone with a different set of inputs and outputs. You can create and manage the connection, and it's yours.