title: Android paho simple explanation for subscribing to a topic
body: <p>I am trying to create a simple android app that controls my robot. All the communication is done using mqtt and eclipse paho for android, but I am very new to the protocol. I cannot find a simple explanation of how to get data from a subscribed topic. The best one I found was <a href="http://www.hivemq.com/blog/mqtt-client-library-enyclopedia-paho-android-service" rel="nofollow">HiveMQ android tutorial</a>
  but that did not explain how to get the data from the callbacks. Any assistance would be appreciated.</p>