How to properly listen for MultiUserChat in Smack?

Question

I'm not sure how to properly listen for MultiUserChats, since there are apparently two different ways to listen for them.

The first way is to add a MessageListener for each room, like this:

MultiUserChat muc = new MultiUserChat(connection,"MyGroup");
muc.addMessageListener(new PacketListener() {
    @Override
    public void processPacket(Packet packet) throws NotConnectedException {
        // TODO Auto-generated method stub
    }
});

The second way is to listen as you would for normal single-chat messages:

PacketFilter filter = new MessageTypeFilter(Message.Type.groupchat);
connection.addPacketListener(new PacketListener() {
    @Override
    public void processPacket(Packet packet) {
        Message message = (Message) packet;
        if (message.getBody() != null) {
            final String fromName = StringUtils.parseBareAddress(message.getFrom());
            final String Rtext = message.getBody();

Considering that I am also listening for file transfers, could you please help me figure out which way is the proper way?

Answer 1

MultiUserChat muc = new MultiUserChat(connection,"MyGroup"); muc.addMessageListener(new PacketListener() {
    @Override
    public void processPacket(Packet packet) throws NotConnectedException {
        // TODO Auto-generated method stub
    } });

is the correct way.

Answer 2

Since the Original Codes both Had Bugs, i used This code:

     PacketFilter messageFilter =

                new AndFilter(

                    new FromMatchesFilter(roomName+"@conference.reza-hp",true),

                    new MessageTypeFilter(Message.Type.groupchat));

            messageFilter = new AndFilter(messageFilter, new PacketFilter() {

                public boolean accept(Packet packet) {

                    Message msg = (Message) packet;

                    return msg.getBody() != null;



                }

            });

          addMessageListener(messageFilter);  
 }

    public static void addMessageListener(PacketFilter messageFilter) {

            connection.addPacketListener(new PacketListener() {

                @Override
                public void processPacket(Packet packet) throws NotConnectedException {
                     Message message = (Message)packet;  
                    String roomName = (message.getFrom().split("\\@conference.reza-
 hp"))[0];
                    String fromUser =    
 (StringUtils.parseResource(message.getFrom()).split("@\\@reza-hp"))[0];

                     System.out.println("=>"+"Room : "+roomName + "From   
 user:"+fromUser + ": "+message.getBody());  

                }
            }, messageFilter);



        }