Running rosjava node on an android device - crashes

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I am trying to write a node that is supposed to run on an android device. Here is the code I have; basically I want to create a node when a button is clicked (I know it is not a good idea to do it on the UI thread, but this is just for testing purposes). The node itself extends MainNode and publishes a string to a topic.

Button send_btn;
TalkerNode node;
NodeMainExecutor exec;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    send_btn = (Button)findViewById(R.id.send_button);
    send_btn.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v)
        {
            send_btn.setText(R.string.sending);
            String masterUri = "http://192.168.1.35:11311";
            URI uri;
            NodeConfiguration node_conf;
            try 
            {
                uri = new URI(masterUri);
                String host = InetAddressFactory.newNonLoopback().getHostAddress();
                node_conf = NodeConfiguration.newPublic(host);
                node_conf.setNodeName("android_node");
                node_conf.setMasterUri(uri);
            } 
            catch (URISyntaxException e) 
            {
                e.printStackTrace();
                return;
            }
            node = new TalkerNode();

            exec = DefaultNodeMainExecutor.newDefault();
            exec.execute(node, node_conf);
        }
    });
}

Everything compiles, the program on the device starts, but it crashes at the line:

String host = InetAddressFactory.newNonLoopback().getHostAddress();

with error - NoClassDefFoundError for the class com.google.common.collect.Lists. Moreover, I tried to set the host manually as the ip of the device, but then the program crashes on the next line:

node_conf = NodeConfiguration.newPublic(host);

with error - NoClassDefFoundError for the class com.google.common.base.Preconditions. I tried importing com.google.common.*, but it didn't help. Any clue how I can fix it? I am using android API level 10 and have pulled rosjava from the repository yesterday.