IOS Xmpp 创建固定房间

XMPPRoom *room;

 // 初始化房间
 XMPPRoomCoreDataStorage *rosterstorage = [[XMPPRoomCoreDataStorage alloc] init];
    if (rosterstorage==nil) {
        NSLog(@"nil");
        rosterstorage = [[XMPPRoomCoreDataStorage alloc] init];
    }
    roomJID = [XMPPJID jidWithString:roomName];
    room = [[XMPPRoom alloc] initWithRoomStorage:rosterstorage jid:roomJID
                                             dispatchQueue:dispatch_get_main_queue()];
    
    [room activate:[[XMPPManager sharedManager] xmppStream]];
   
    // 在聊天是显示的昵称
    [room joinRoomUsingNickname:jid history:nil];
    
    [room fetchConfigurationForm];

    [room addDelegate:self delegateQueue:dispatch_get_main_queue()];

#pragma mark 配置房间为永久房间
-(void)sendDefaultRoomConfig
{
    
    NSXMLElement *x = [NSXMLElement elementWithName:@"x" xmlns:@"jabber:x:data"];
    
    NSXMLElement *field = [NSXMLElement elementWithName:@"field"];
    NSXMLElement *value = [NSXMLElement elementWithName:@"value"];
    
    NSXMLElement *fieldowners = [NSXMLElement elementWithName:@"field"];
    NSXMLElement *valueowners = [NSXMLElement elementWithName:@"value"];
    
    
    [field addAttributeWithName:@"var" stringValue:@"muc#roomconfig_persistentroom"];  // 永久属性
    [fieldowners addAttributeWithName:@"var" stringValue:@"muc#roomconfig_roomowners"];  // 谁创建的房间


    [field addAttributeWithName:@"type" stringValue:@"boolean"];
    [fieldowners addAttributeWithName:@"type" stringValue:@"jid-multi"];
    
    [value setStringValue:@"1"];
    [valueowners setStringValue:myJid]; //创建者的Jid
    
    [x addChild:field];
    [x addChild:fieldowners];
    [field addChild:value];
    [fieldowners addChild:valueowners];
   
    [room configureRoomUsingOptions:x];

}
 
// 房间创建成功后在配置永久属性
#pragma mark - 创建讨论组成功回调
- (void)xmppRoomDidCreate:(XMPPRoom *)sender
{
    [self sendDefaultRoomConfig];
}