Unable to login to ejabberd server using XMPP clie

I am trying to connect & login to ejabberd server using a XMPP client in Android. The XMPP client connects to the server but doesn't logs in. I am getting Exception message as No response from the server. I don't know where is the problem.

Following is the code:

XMPP Client.java

package org.apache.android.xmpp;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.filter.MessageTypeFilter;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.util.StringUtils;

import java.util.ArrayList;

public class XMPPClient extends Activity {

private ArrayList<String> messages = new ArrayList();
private Handler mHandler = new Handler();
private SettingsDialog mDialog;
private EditText mRecipient;
private EditText mSendText;
private ListView mList;
private XMPPConnection connection;

/**
 * Called with the activity is first created.
 */
@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    Log.i("XMPPClient", "onCreate called");
    setContentView(R.layout.main);

    mRecipient = (EditText) this.findViewById(R.id.recipient);
    Log.i("XMPPClient", "mRecipient = " + mRecipient);
    mSendText = (EditText) this.findViewById(R.id.sendText);
    Log.i("XMPPClient", "mSendText = " + mSendText);
    mList = (ListView) this.findViewById(R.id.listMessages);
    Log.i("XMPPClient", "mList = " + mList);
    setListAdapter();

    // Dialog for getting the xmpp settings
    mDialog = new SettingsDialog(this);

    // Set a listener to show the settings dialog
    Button setup = (Button) this.findViewById(R.id.setup);
    setup.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            mHandler.post(new Runnable() {
                public void run() {
                    mDialog.show();
                }
            });
        }
    });

    // Set a listener to send a chat text message
    Button send = (Button) this.findViewById(R.id.send);
    send.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            String to = mRecipient.getText().toString();
            String text = mSendText.getText().toString();

            Log.i("XMPPClient", "Sending text [" + text + "] to [" + to + "]");
            Message msg = new Message(to, Message.Type.chat);
            msg.setBody(text);
            connection.sendPacket(msg);
            messages.add(connection.getUser() + ":");
            messages.add(text);
            setListAdapter();
        }
    });
}

/**
 * Called by Settings dialog when a connection is establised with the XMPP server
 *
 * @param connection
 */
public void setConnection
        (XMPPConnection
                connection) {
    this.connection = connection;
    if (connection != null) {
        // Add a packet listener to get messages sent to us
        PacketFilter filter = new MessageTypeFilter(Message.Type.chat);
        connection.addPacketListener(new PacketListener() {
            public void processPacket(Packet packet) {
                Message message = (Message) packet;
                if (message.getBody() != null) {
                    String fromName = StringUtils.parseBareAddress(message.getFrom());
                    Log.i("XMPPClient", "Got text [" + message.getBody() + "] from [" + fromName + "]");
                    messages.add(fromName + ":");
                    messages.add(message.getBody());
                    // Add the incoming message to the list view
                    mHandler.post(new Runnable() {
                        public void run() {
                            setListAdapter();
                        }
                    });
                }
            }
        }, filter);
    }
}

private void setListAdapter
        () {
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            R.layout.multi_line_list_item,
            messages);
    mList.setAdapter(adapter);
}
}

SettingDialog.java

package org.apache.android.xmpp;

import android.app.Dialog;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Presence;

/**
 * Gather the xmpp settings and create an XMPPConnection
 */
public class SettingsDialog extends Dialog implements android.view.View.OnClickListener {
private XMPPClient xmppClient;

public SettingsDialog(XMPPClient xmppClient) {
    super(xmppClient);
    this.xmppClient = xmppClient;
}

protected void onStart() {
    super.onStart();
    setContentView(R.layout.settings);
    getWindow().setFlags(4, 4);
    setTitle("XMPP Settings");
    Button ok = (Button) findViewById(R.id.ok);
    ok.setOnClickListener(this);
}

public void onClick(View v) {
    String host = "10.0.2.2";//getText(R.id.host);
    String port = "5222";//getText(R.id.port);
    String service = "@domain";//getText(R.id.service);
    final String username = "userid@domain";//getText(R.id.userid);
    final String password = "password";//getText(R.id.password);

    // Create a connection
    ConnectionConfiguration connConfig =
            new ConnectionConfiguration(host, Integer.parseInt(port), service);
    final XMPPConnection connection = new XMPPConnection(connConfig);

    new Thread(new Runnable()
    {
        public void run()
        {
            try {
                connection.connect();
                Log.i("XMPPClient", "[SettingsDialog] Connected to " + connection.getHost());
            } catch (XMPPException ex) {
                Log.e("XMPPClient", "[SettingsDialog] Failed to connect to " + connection.getHost());
                Log.e("XMPPClient", ex.toString());
                xmppClient.setConnection(null);
            }
            try {
                connection.login(username, password);
                Log.i("XMPPClient", "Logged in as " + connection.getUser());

                // Set the status to available
                Presence presence = new Presence(Presence.Type.available);
                connection.sendPacket(presence);
                xmppClient.setConnection(connection);
            } catch (XMPPException ex) {
                Log.e("XMPPClient", "[SettingsDialog] Failed to log in as " + username);
                Log.e("XMPPClient", ex.toString());
                    xmppClient.setConnection(null);
            }
        }
    }).start();

    dismiss();
}

private String getText(int id) {
    EditText widget = (EditText) this.findViewById(id);
    return widget.getText().toString();
}
}

Please could anyone can help.

If you are running the server locally, then you should just set the host to localhost, but the service (i.e. XMPP domain) needs to be set to whatever it is configured to be on the server. It won't be @domain, it would be domain.