How to Add and Subscribe a jabber entry to my XMPP Account?

Question

I am able to add Entry to the Xmpp account by using this code. i can't get subscription "both", instead of this i am getting none.

roster.createEntry("[email protected]", "abc", null);

How to add entry with the presence type=both, when i am subscribing entry to this account. I want to know whether xmpp publish-subscribe functionality ?

1. How to get Inbound presence notifications ?
2. How to send Outbound presence notifications ?

EDIT :

public void Addcontact() {    
    Roster.setDefaultSubscriptionMode(Roster.SubscriptionMode.manual);
    Roster roster = m_connection.getRoster();

    if(!roster.contains("[email protected]")) {        try {           
            roster.createEntry("[email protected]", "pa", null);               
        } catch (XMPPException e) {          
            e.printStackTrace();
        }
    }else {
        Log.i("Acc = ", "contains");
    }
}

I am adding entry like this still i am getting Presence Type = none..

Answer 1

Here is how I add another friend in my application.

protected void doAddContactToListAsync(String address, String name,
                ContactList list) throws ImException {
            debug(TAG, "add contact to " + list.getName());
            Presence response = new Presence.Type.subscribed);
            response.setTo(address);

            sendPacket(response);

            Roster roster = mConnection.getRoster();
            String[] groups = new String[] { list.getName() };
            if (name == null) {
                name = parseAddressName(address);
            }
            try {

                roster.createEntry(address, name, groups);

                // If contact exists locally, don't create another copy
                Contact contact = makeContact(name, address);
                if (!containsContact(contact))
                    notifyContactListUpdated(list,
                            ContactListListener.LIST_CONTACT_ADDED, contact);
                else
                    debug(TAG, "skip adding existing contact locally " + name);
            } catch (XMPPException e) {
                throw new RuntimeException(e);
            }
        }

Just use the essential part

Presence response = new Presence.Type.subscribed);
response.setTo(address);
sendPacket(response);

Roster roster = mConnection.getRoster();
roster.createEntry(address, name, groups);

In order to listen to incoming request, register addPacketListener to your connection

    mConnection.addPacketListener(new PacketListener() {

            @Override
            public void processPacket(Packet packet) {

                Presence presence = (Presence) packet;
                    if (presence.getType() == Type.subscribe) {
                    debug(TAG, "sub request from 1" + address);
//Implement accept or reject depend on user action. 
            mContactListManager.getSubscriptionRequestListener()
                            .onSubScriptionRequest(contact);
//or you can test with send back Presence.subscribe first and send Presence.subscribed back to requester.


                } else {// Handle other Presence type.
                    int type = parsePresence(presence);
                    debug(TAG, "sub request from " + type);
                    contact.setPresence(new Presence(type,
                            presence.getStatus(), null, null,
                            Presence.CLIENT_TYPE_DEFAULT));

                }
            }
        }, new PacketTypeFilter(Presence.class));

        mConnection.connect();

The right order:

1. User1 send Subscribe to user2.
2. User2 send Subscribe and Subsribed back to user1.
3. User1 send Subsribed to user2.

Another SO question you can check