标签：als selector rem 学习 value pre select blog sel
1、发布新通知：
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "MessageMainCount"), object: nil, userInfo: ["count":"\(count)"])
2、接受新通知
NotificationCenter.default.addObserver(self, selector: #selector(self.changeBadgeValue(notification:)), name: NSNotification.Name(rawValue: "MessageMainCount"), object: nil)
3、设置接受通知的监听方法
func changeBadgeValue(notification: Notification) -> Void {
let name = notification.name
let userInfo = notification.userInfo as! [String:Any]
let userInfoDic = userInfo as NSDictionary
if name == NSNotification.Name(rawValue: "MessageMainCount"){
let badgeValue: String = userInfoDic.object(forKey: "count") as! String
self.messageVC.parent?.tabBarItem.badgeValue = badgeValue
}
}
4、移除通知监听
deinit{
NotificationCenter.default.removeObserver(self)
}
标签：als selector rem 学习 value pre select blog sel
原文地址：http://www.cnblogs.com/yxtBlogs/p/6134887.html
