问题
How would I determine if a user is online/offline using XMPPFramework for iPhone?
I have their JID etc etc. Is there a way of requesting a presence or something?
Thank you.
回答1:
Have you checked out the source code of the XMPPFramework sample project?
If I remember correctly, this should be the relevant code snippet:
// Subscribe to the buddy's presence
//
// <presence to="bareJID" type="subscribe"/>
NSXMLElement *presence = [NSXMLElement elementWithName:@"presence"];
[presence addAttributeWithName:@"to" stringValue:[jid bare]];
[presence addAttributeWithName:@"type" stringValue:@"subscribe"];
[xmppStream sendElement:presence];
And the callback your stream delegate gets should be
- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence;
I assume that you already have the xmmpframework source, if not, you can clone the repository here
hg clone https://xmppframework.googlecode.com/hg/ xmppframework
The sample projects are in the "Xcode" folder.
来源：https://stackoverflow.com/questions/4960037/xmppframework-can-i-determine-the-online-offline-status-of-a-user-at-all