smack - chat state notification

How to know Typing Status in XMPP openfire using Smack

I am developing chat application by using Openfire XMPP server. I can text chat between two user. But i want to know Typing status when some one is typing message. So i created a class :-

public class typingStatus implements ChatStateListener {

    @Override
    public void processMessage(Chat arg0, Message arg1) {
        // TODO Auto-generated method stub

    }

    @Override
    public void stateChanged(Chat arg0, ChatState arg1) {
        // TODO Auto-generated method stub
        System.out.println(arg0.getParticipant() + " is " + arg1.name());

    }

}

But i am confuse so that How will it work? I know that i need a packet where i can it in Listener. But i am unable to find that packet.

Please any one suggest, How will it work?

and also what is difference between Smack and asmack?

Thank you!

To enable ChatStateListener you need to create a custom MessageListener Class

public class MessageListenerImpl implements MessageListener,ChatStateListener  {

    @Override
    public void processMessage(Chat arg0, Message arg1) {
        System.out.println("Received message: " + arg1);

    }

    @Override
    public void stateChanged(Chat arg0, ChatState arg1) {
        if (ChatState.composing.equals(arg1)) {
            Log.d("Chat State",arg0.getParticipant() + " is typing..");
        } else if (ChatState.gone.equals(arg1)) {
            Log.d("Chat State",arg0.getParticipant() + " has left the conversation.");
        } else {
            Log.d("Chat State",arg0.getParticipant() + ": " + arg1.name());
        }

    }

}

Then you create MessageListener object

MessageListener messageListener = new MessageListenerImpl();

And then pass this in the create chat method

Chat newChat = chatmanager.createChat(jabber_id_of_friend, messageListener);

what is difference between Smack and asmack? <-- Check This

source - http://stackoverflow.com/questions/18436546/how-to-know-typing-status-in-xmpp-openfire-using-smack