Create Muc Group Like Whatsapp Android

I can creating and joining MUC rooms. But user disconnects from the Openfire server, he is removed from the group on the server side. How can i similar to what Whatsapp does, i.e.

Solution 1:

When inviting an user, you have to grant him Membership:

MultiUserChat muc = multiUserChatManager.getMultiUserChat("foo@conference.myserver");

muc.invite("jhondoe@myserver","Join this groupchat!");

then you can grant him voice and you must grantMembership (or Ownership or Moderation as you like/need):

muc.grantVoice("jhondoe@myserver");
muc.grantMembership("jhondoe@myserver");

finally you have to integrate a list like that with your client:

publicList<String> retriveAllAffialiateOfMuc(MultiUserChat muc) throws NoResponseException, XMPPErrorException, NotConnectedException
    {
        List<Affiliate> affiliatesMembers = new ArrayList<Affiliate>();
        if (muc.getAdmins() != null)
        {
            affiliatesMembers.addAll( muc.getAdmins() );
        }

        if ( muc.getMembers() != null)
        {
            affiliatesMembers.addAll( muc.getMembers() );
        }

        if ( muc.getOwners() != null )
        {
            affiliatesMembers.addAll( muc.getOwners() );
        }

        if (affiliatesMembers.size() == 0)
        {
            System.out.println("Error: looking for a non existant room");
            returnnew ArrayList<String>(0);
        }

        List<String> affiliateMembersNames = new ArrayList<String>(affiliatesMembers.size());

        for (Affiliate affiliate : affiliatesMembers)
        {
            affiliateMembersNames.add(affiliate.getJid().toString());
        }
        return affiliateMembersNames;
    }

So you'll have a list of all users affiliate to the room. You can use this list in some callback to make a list of "all members" like in WhatsApp.

Look at the end of this page: https://www.igniterealtime.org/builds/smack/dailybuilds/documentation/extensions/muc.html

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