Android-wamp-client is an open source AndroidStudio project that implements the WAMP protocol (Web Application Messaging Protocol) version 2.
The guys from Autobahn are doing a great job implementing the WAMP protocol v1. They provided a well documented implementation for Android. Autobahn implementation is for WAMP v1. As listed, the v2 support is "under development" for Android.
To tickle the v2 protocol, we used Jawampa, a Java library providing a WAMP v2 client. The library was wrapped in AndroidStudio as a module in the example project.
The master branch will contain an advanced WAMP provider, under development.
Checkout jawampa-basic-test branch for a basic implementation of the WAMP v2 client.