XMPP development tutorial (4)-getting friends list

This topic describes how to obtain a friend list. Here, it mainly describes the functions and interfaces for subsequent updates.

First, provide the core code

1  xmppRosterStorage = [[XMPPRosterCoreDataStorage alloc] init];2         //    xmppRosterStorage = [[XMPPRosterCoreDataStorage alloc] initWithInMemoryStore];3         4         xmppRoster = [[XMPPRoster alloc] initWithRosterStorage:xmppRosterStorage];5         6         xmppRoster.autoFetchRoster = YES;7         xmppRoster.autoAcceptKnownPresenceSubscriptionRequests = YES;8         [xmppRoster            activate:xmppStream];9         [xmppRoster addDelegate:self delegateQueue:dispatch_get_main_queue()];

This code has been introduced in the previous chapter, mainly to get friend information, which calls back

 1 //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 2 #pragma mark ReceiveIQ 3 //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 4  5 - (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq 6 { 7     NSLog(@"%@: %@", THIS_FILE, THIS_METHOD); 8      9     if ([@"result" isEqualToString:iq.type]) {10         NSXMLElement *query = iq.childElement;11         if ([@"query" isEqualToString:query.name]) {12             NSArray *items = [query children];13             for (NSXMLElement *item in items) {14                 NSString *jid = [item attributeStringValueForName:@"jid"];15                 XMPPJID *xmppJID = [XMPPJID jidWithString:jid];16                 [self.roster addObject:xmppJID];17             }18         }19     }20     21     return NO;22 }

We changed the obtained friend information to the self. Roster array.

XMPP development tutorial (4)-getting friends list