13----

创建定时器，每隔5秒向服务器询问是否有新的好友动态

    [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(timeClick:) userInfo:nil repeats:YES];

- (void)timeClick:(NSTimer *)timer
{
    AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
    NSString *uid = delegate.sinaweibo.userID;
    //判断，如果当前还没有登录，则不做任何事情
    if(uid.length == 0)
    {
        return;
    }
   
    NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObject:uid forKey:@"uid"];
    //访问接口，进行网络请求
    [DataService requestWithURL:unread_count params:params httpMethod:@"GET" finishDidBlock:^(AFHTTPRequestOperation *operation, id result) {
        if(badgeView == nil)
        {
            badgeView = [[ThemeImageView alloc]initWithFrame:CGRectMake(kScreenWidth / 5 - 32, 0, 32, 32)];
            badgeView.imgName = @"number_notify_9.png";
            [_tabBarView addSubview:badgeView];
           
            //显示未读数的label
            badgeLabel = [[ThemeLabel alloc]initWithFrame:badgeView.bounds];
            badgeLabel.textAlignment = NSTextAlignmentCenter;
            badgeLabel.font = [UIFont systemFontOfSize:13.0];
            badgeLabel.colorName = @"Timeline_Notice_color";
            [badgeView addSubview:badgeLabel];
        }
        //请求成功
        NSNumber *status = [result objectForKey:@"status"];
        NSInteger unRead = [status integerValue];
       
        if(unRead > 0)
        {
            //有未读微博
            badgeView.hidden = NO;
           
            //当未读数大于99时，显示99
            if(unRead >= 99)
            {
                unRead = 99;
            }
           
            badgeLabel.text = [NSString stringWithFormat:@"%ld",unRead];
        }
        else
        {
            //没有未读微博
            badgeView.hidden = YES;
        }
    } failureBlock:^(AFHTTPRequestOperation *operation, NSError *error) {
        //请求失败
        NSLog(@"unread error");
    }];
   

}