我可以从其他班级观看NSNotification吗？ [英] Can I watch an NSNotification from another class?

问题描述

我正试着绕过NSNotificationCenter。如果我的App Delegate中有类似的内容：

I'm trying to get my head around NSNotificationCenter. If I have something like this in my App Delegate:

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

-(void)something:(NSNotification *) notification
{
  // do something

}

我可以在另一个视图控制器中以某种方式观察这个吗？在我的情况下，我想在带有表的视图控制器中观察它，然后在收到通知时重新加载表。这可能吗？

Can I somehow watch this in another view controller? In my case, I'd like to watch it in a view controller with a table, and then reload the table when a notification is received. Is this possible?

推荐答案

是的，你可以这就是 NSNotification ，你只需要像在App Delegate上那样添加你想要的观察者，它就会收到通知。

Yes you can that is the whole purpose of NSNotification, you just have to add the View Controller you want as an observer exactly the same way you did on your App Delegate, and it will receive the notification.

你可在此处找到更多信息：通知编程

You can find more information here: Notification Programming

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