Show message sent by the server with SocketIO on android

I am trying to send a message from my server made in nodejs, when I start my server the message I show it in console but I want to know how I have that message displayed on my android smartphone

this is what I have

server:

var array = {"nombre":"jorge pedro"};
io.on('connection',function(socket){
    socket.broadcast.emit('primero',array);
    console.log(array);
    socket.on('disconnect',function(){
        console.log('Usuario desconectado con id: '+socket.id);
    })
})

and this I do in my java class

socket.on("primero", ver);

    private Emitter.Listener ver = new Emitter.Listener(){

        @Override
        public void call(Object... args) {
            JSONObject data = (JSONObject) args[0];
            String message;
            try {
                message = data.getString("nombre").toString();
                Toast.makeText(Menu.this,message,Toast.LENGTH_LONG).show();
            } catch (JSONException e) {
                // return;
            }
        }
    };
}

The idea is that when a phone connects to the server, it sends the array and I get this error Can not create handler inside thread that has not called Looper.prepare ()

How can I solve it? I thank you in advance for your help

socketio of com.github.nkzawa: socket.io-client: 0.5.0 for android