Package org.jivesoftware.smack.roster

Class AbstractRosterListener

java.lang.Object

org.jivesoftware.smack.roster.AbstractRosterListener

All Implemented Interfaces:

RosterListener

public abstract class AbstractRosterListener
extends Object
implements RosterListener

Provides empty implementations for RosterListener.

Since:

4.2

Constructor Summary

Constructors

Constructor	Description
AbstractRosterListener()

Method Summary

Modifier and Type	Method	Description
void	entriesAdded(Collection<Jid> addresses)	Called when roster entries are added.
void	entriesDeleted(Collection<Jid> addresses)	Called when a roster entries are removed.
void	entriesUpdated(Collection<Jid> addresses)	Called when a roster entries are updated.
void	presenceChanged(Presence presence)	Called when the presence of a roster entry is changed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractRosterListener

public AbstractRosterListener()

Method Detail

entriesAdded

public void entriesAdded(Collection<Jid> addresses)

Description copied from interface: RosterListener

Called when roster entries are added.

Specified by:

entriesAdded in interface RosterListener

Parameters:

addresses - the XMPP addresses of the contacts that have been added to the roster.

entriesUpdated

public void entriesUpdated(Collection<Jid> addresses)

Description copied from interface: RosterListener

Called when a roster entries are updated.

Specified by:

entriesUpdated in interface RosterListener

Parameters:

addresses - the XMPP addresses of the contacts whose entries have been updated.

entriesDeleted

public void entriesDeleted(Collection<Jid> addresses)

Description copied from interface: RosterListener

Called when a roster entries are removed.

Specified by:

entriesDeleted in interface RosterListener

Parameters:

addresses - the XMPP addresses of the contacts that have been removed from the roster.

presenceChanged

public void presenceChanged(Presence presence)

Description copied from interface: RosterListener

Called when the presence of a roster entry is changed. Care should be taken when using the presence data delivered as part of this event. Specifically, when a user account is online with multiple resources, the UI should account for that. For example, say a user is online with their desktop computer and mobile phone. If the user logs out of the IM client on their mobile phone, the user should not be shown in the roster (contact list) as offline since they're still available as another resource.

To get the current "best presence" for a user after the presence update, query the roster:

    String user = presence.getFrom();
    Presence bestPresence = roster.getPresence(user);
 

That will return the presence value for the user with the highest priority and availability. Note that this listener is triggered for presence (mode) changes only (e.g presence of types available and unavailable. Subscription-related presence packets will not cause this method to be called.

Specified by:

presenceChanged in interface RosterListener

Parameters:

presence - the presence that changed.

See Also:

Roster.getPresence(org.jxmpp.jid.BareJid)