发布一条消息（Publish a message）

[[NSNotificationCenter defaultCenter] postNotificationName:@"Notification_GetUserProfileSuccess" object:userProfile userInfo:nil];

订阅一条消息（Subscribe a message）

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getUserProfileSuccess:) name:@"Notification_GetUserProfileSuccess" object:nil];

移除订阅

[[NSNotificationCenter defaultCenter] removeObserver:self name:@"Notification_GetUserProfileSuccess" object:nil];