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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Thu Jun 21 14:48:19 PDT 2007 --><TITLE>Presence (Smack 3.0.4 Documentation)</TITLE><META NAME="keywords" CONTENT="org.jivesoftware.smack.packet.Presence class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Presence (Smack 3.0.4 Documentation)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Smack</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/jivesoftware/smack/packet/PacketExtension.html" title="interface in org.jivesoftware.smack.packet"><B>PREV CLASS</B></A> <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html" title="enum in org.jivesoftware.smack.packet"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/jivesoftware/smack/packet/Presence.html" target="_top"><B>FRAMES</B></A> <A HREF="Presence.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#nested_class_summary">NESTED</A> | <A HREF="#fields_inherited_from_class_org.jivesoftware.smack.packet.Packet">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.jivesoftware.smack.packet</FONT><BR>Class Presence</H2><PRE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/jivesoftware/smack/packet/Packet.html" title="class in org.jivesoftware.smack.packet">org.jivesoftware.smack.packet.Packet</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.jivesoftware.smack.packet.Presence</B></PRE><HR><DL><DT><PRE>public class <B>Presence</B><DT>extends <A HREF="../../../../org/jivesoftware/smack/packet/Packet.html" title="class in org.jivesoftware.smack.packet">Packet</A></DL></PRE><P>Represents XMPP presence packets. Every presence packet has a type, which is one of the following values: <ul> <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#available"><CODE>available</CODE></A> -- (Default) indicates the user is available to receive messages. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#unavailable"><CODE>unavailable</CODE></A> -- the user is unavailable to receive messages. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#subscribe"><CODE>subscribe</CODE></A> -- request subscription to recipient's presence. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#subscribed"><CODE>subscribed</CODE></A> -- grant subscription to sender's presence. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#unsubscribe"><CODE>unsubscribe</CODE></A> -- request removal of subscription to sender's presence. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#unsubscribed"><CODE>unsubscribed</CODE></A> -- grant removal of subscription to sender's presence. <li><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html#error"><CODE>error</CODE></A> -- the presence packet contains an error message. </ul><p> A number of attributes are optional: <ul> <li>Status -- free-form text describing a user's presence (i.e., gone to lunch). <li>Priority -- non-negative numerical priority of a sender's resource. The highest resource priority is the default recipient of packets not addressed to a particular resource. <li>Mode -- one of five presence modes: <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html#available"><CODE>available</CODE></A> (the default), <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html#chat"><CODE>chat</CODE></A>, <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html#away"><CODE>away</CODE></A>, <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html#xa"><CODE>xa</CODE></A> (extended away), and <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html#dnd"><CODE>dnd</CODE></A> (do not disturb). </ul><p> Presence packets are used for two purposes. First, to notify the server of our the clients current presence status. Second, they are used to subscribe and unsubscribe users from the roster.<P><P><DL><DT><B>Author:</B></DT> <DD>Matt Tucker</DD><DT><B>See Also:</B><DD><A HREF="../../../../org/jivesoftware/smack/packet/RosterPacket.html" title="class in org.jivesoftware.smack.packet"><CODE>RosterPacket</CODE></A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html" title="enum in org.jivesoftware.smack.packet">Presence.Mode</A></B></CODE><BR> An enum to represent the presence mode.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html" title="enum in org.jivesoftware.smack.packet">Presence.Type</A></B></CODE><BR> A enum to represent the presecence type.</TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR></TABLE> <A NAME="fields_inherited_from_class_org.jivesoftware.smack.packet.Packet"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class org.jivesoftware.smack.packet.<A HREF="../../../../org/jivesoftware/smack/packet/Packet.html" title="class in org.jivesoftware.smack.packet">Packet</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jivesoftware/smack/packet/Packet.html#DEFAULT_LANGUAGE">DEFAULT_LANGUAGE</A>, <A HREF="../../../../org/jivesoftware/smack/packet/Packet.html#ID_NOT_AVAILABLE">ID_NOT_AVAILABLE</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/jivesoftware/smack/packet/Presence.html#Presence(org.jivesoftware.smack.packet.Presence.Type)">Presence</A></B>(<A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html" title="enum in org.jivesoftware.smack.packet">Presence.Type</A> type)</CODE><BR> Creates a new presence update.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/jivesoftware/smack/packet/Presence.html#Presence(org.jivesoftware.smack.packet.Presence.Type, java.lang.String, int, org.jivesoftware.smack.packet.Presence.Mode)">Presence</A></B>(<A HREF="../../../../org/jivesoftware/smack/packet/Presence.Type.html" title="enum in org.jivesoftware.smack.packet">Presence.Type</A> type, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> status, int priority, <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html" title="enum in org.jivesoftware.smack.packet">Presence.Mode</A> mode)</CODE><BR> Creates a new presence update with a specified status, priority, and mode.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/jivesoftware/smack/packet/Presence.Mode.html" title="enum in org.jivesoftware.smack.packet">Presence.Mode</A></CODE></FONT></TD>⌨️ 快捷键说明
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