XMPP好友列表3

// Roster

我们继续写 获取好友列表

.h

/*!
 *  @Author Dylan.
 *
 *  Roster
 */

typedef void (^refreshRosterListFailure) (id);
typedef void (^Rosterlist) (id);

/*!
 *  @Author Dylan.
 *
 *  request for roster list. IQ
 */
- (void)refreshRosterList: (Rosterlist)success
                  failure: (refreshRosterListFailure)failure;
@property (nonatomic, strong) NSMutableDictionary * rosterDict;

.m

#pragma mark - rosterList

- (void)initRosterlist {
    self.rosterDict = [NSMutableDictionary dictionary];
}

- (void)refreshRosterList: (Rosterlist)success
                  failure: (refreshRosterListFailure)failure {
    
    // call back
    self.refreshSuccess = success;
    self.refreshFailure = failure;
    
    NSXMLElement * query = [NSXMLElement elementWithName:@"query" xmlns:@"jabber:iq:roster"];
    NSXMLElement * iq = [NSXMLElement elementWithName:@"iq"];
    
    XMPPJID * myJID = self.xmppStream.myJID;
    [iq addAttributeWithName:@"from" stringValue:myJID.description];
    [iq addAttributeWithName:@"to" stringValue:myJID.domain];
    [iq addAttributeWithName:@"id" stringValue:@"123456"];
    [iq addAttributeWithName:@"type" stringValue:@"get"];
    [iq addChild:query];
    
    [self.xmppStream sendElement:iq];
}

- (void)xmppStream:(XMPPStream *)sender didFailToSendIQ:(XMPPIQ *)iq error:(NSError *)error {
    self.refreshFailure(error);
}

// get user list
- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq {
    
    // kind of result
    if ([@"result" isEqualToString:iq.type]) {
        NSXMLElement * query = iq.childElement;
        
        if ([@"query" isEqualToString:query.name]) {
            NSArray * items = [query children];
            for (NSXMLElement * item in items) {
                NSString * jid = [item attributeStringValueForName:@"jid"];
                XMPPJID * xmppJID = [XMPPJID jidWithString:jid];
                [_rosterDict setValue:xmppJID forKey:jid];
            }
        }
        // block
        self.refreshSuccess(_rosterDict);
        return YES;
    }
    
    NSLog(@"get iq error");
    return NO;
}


@end

// 顺便写出在点m文件中我写的回掉Block 的属性

@interface ADXMPPConn ()

/*!
 *  @Author Dylan.
 *
 *  Call back Block
 */
@property (nonatomic, copy) connectSuccess connSuccess;
@property (nonatomic, copy) AuthenticateFailure authenFailure;

@property (nonatomic, copy) registerSuccess regisSuccess;
@property (nonatomic, copy) registerFailure regisFailure;

/*!
 *  call back block
 */
@property (nonatomic, copy) sendSuccess success;
@property (nonatomic, copy) sendFailure failure;

/*!
 *  call back block
 */
@property (nonatomic, copy) refreshRosterListFailure refreshFailure;
@property (nonatomic, copy) Rosterlist refreshSuccess;

@end