This is a project IDEA for Google Summer of Code (GSOC). To discuss this or other ideas with your potential mentor from the Apache Taverna project, sign up and post to the dev@taverna list, including "[GSOC]" in the subject. You may also comment on this Jira issue if you have created an account.
It should be possible to connect to either the player or a server, so a common internal Java interface might have to be developed.
API guide for Taverna Server: https://taverna.incubator.apache.org/documentation/server/3.1/usage
There's an API taverna-server-client library bundled with the Taverna Server release which may be helpful, although it has not been tested on Android.
Prospective GSOC mentor: email@example.com