Android - Just use Smack API for XMPP

Using Smack XMPP API from Android

Once you get tired of the limitations of android’s built-in IMProvider and the corresponding API - IXmppSession and IXmppService, try the sample below. Inside the source/binary zip (bottom of this article) you will find a smack.jar that works with android. To build the jar yourself, You can download the Smack 3.0.4 sources from here and apply the patch here.

Here is a screen shot of the XMPP Settings Dialog.

1

Notes



  • For GTalk, use “gtalk.google.com” as host with port 5222. The service name is “gmail.com”

  • Don’t add “@gmail.com” in the user name, just the id will do

Here’s the code for the settings dialog


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 = getText(R.id.host);
        String port = getText(R.id.port);
        String service = getText(R.id.service);
        String username = getText(R.id.userid);
        String password = getText(R.id.password);

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

        try {
            connection.connect();
            Log.i("XMPPClient", "[SettingsDialog] Connected to " + connection.getHost());
        } catch (XMPPException ex) {
            Log.e("XMPPClient", "[SettingsDialog] Failed to connect to " + connection.getHost());
            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);
            xmppClient.setConnection(null);
        }
        dismiss();
    }

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

Here is a screen shot of the main window.

1

Notes



  • In the Recipient field, make sure you add the “@gmail.com”, not just the user id

Here’s the code for the main activity


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);
        setContentView(R.layout.main);

        mRecipient = (EditText) this.findViewById(R.id.recipient);
        mSendText = (EditText) this.findViewById(R.id.sendText);
        mList = (ListView) this.findViewById(R.id.listMessages);
        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);
    }
}

Download Source and APK from here - XMPPClient.zip

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You’re currently reading “Android - Just use Smack API for XMPP,” an entry on Show me the code! - By Davanum Srinivas

Published:
12.31.07 / 9am
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