xmpp登录注册好友群组_实战教学4_移动开发_编程开发_程序员俱乐部

// 实现好友状态的获取 - 在线、离线  别的状态自己去写一下判断和回掉就好

.h

 1 /*!
 2  *  @Author Dylan.
 3  *
 4  *  Paresence
 5  */
 6 typedef void (^userGoOnline) (NSString *);
 7 typedef void (^userGoOffline) (NSString *);
 8 
 9 - (void)refreshRosterPresence: (userGoOnline)online
10                       offline: (userGoOffline)offline;

.m

 1 #pragma mark presence
 2 - (void)refreshRosterPresence: (userGoOnline)online
 3                       offline: (userGoOffline)offline {
 4     
 5     self.rosterOnline = online;
 6     self.rosterOffline = offline;
 7     [self online];
 8 }
 9 
10 - (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence {
11     
12     // get presence type
13     NSString * presenceType = [presence type];
14     NSString * userID = [[sender myJID] user];
15     
16     NSString * presencrFromUser = [[presence from] user];
17     if (![presencrFromUser isEqualToString:userID]) {
18         if ([presenceType isEqualToString:@"available"]) {
19             self.rosterOnline(userID);
20         } else if ([presenceType isEqualToString:@"unavailable"]) {
21             self.rosterOffline(userID);
22         }
23     }
24 }

注意这里的第7行代码。

把我们以前写的self online这句话 从以前的登录成功就去获取好友状态改到我们的刷新好友状态里边。

补上Block回掉申明

1 /*!
2  *  call back block
3  */
4 @property (nonatomic, copy) userGoOnline rosterOnline;
5 @property (nonatomic, copy) userGoOffline rosterOffline;