Google Android - это несложно

Код: Выделить всё

package com.example.socketio_client;

import io.socket.IOAcknowledge;
import io.socket.IOCallback;
import io.socket.SocketIO;
import io.socket.SocketIOException;

import java.net.MalformedURLException;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		SocketIO socket;
		Button btn;
		
		btn = (Button) findViewById(R.id.btn);
		OnClickListener oclbtn = new OnClickListener() {
        	
            @Override
            public void onClick(View v) {
              // TODO Auto-generated method stub
          	socket.send("Hello"); // Не работает
            }
          };
          
          btn.setOnClickListener(oclbtn);
          
		
        try{
            System.out.println("Initializing Connection.");

            socket = new SocketIO("http://192.168.56.100:8080/");
            socket.connect
                (
                    new IOCallback(){
                        @Override
                        public void onMessage(JSONObject json, IOAcknowledge ack) {
                            try {
                                System.out.println("Server said:" + json.toString(2));
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                        }

                        @Override
                        public void onMessage(String data, IOAcknowledge ack) {
                         System.out.println("Server said: " + data);
                        }

                        @Override
                        public void onError(SocketIOException socketIOException) {
                            System.out.println("an Error occured");
                            socketIOException.printStackTrace();
                        }

                        @Override
                        public void onDisconnect() {
                            System.out.println("Connection terminated.");
                        }

                        @Override
                        public void onConnect() {
                         System.out.println("Connection established");
                        }

                        @Override
                        public void on(String event, IOAcknowledge ack, Object... args) {
                            System.out.println("Server triggered event '" + event + "'");
                        }
                    }
                );
            
            try {
                // This line is cached until the connection is established.
                System.out.println("Sending message to server.");
                socket.send("user message");
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        socket.send("Hello"); // Так работает

        } catch (MalformedURLException e1) {
            e1.printStackTrace();
        }
		
	}
}