something:something:something方法格式?

问题描述

-(void) alertView: ( UIAlertView *) alertView
         clickedButtonAtIndex: ( NSInteger ) buttonIndex {
      // do stuff
      // if you want the alert to close, just call [ alertView release ]
}

有人可以解释这种方法吗?我已经习惯了-(IBAction)buttonPress:(id)sender"之类的方法，但是这个方法有三个.这些分别是什么意思?

Can someone explain this method? I'm used to methods that are like "-(IBAction)buttonPress:(id)sender" but this one has three. What do each of those mean?

MethodName:ReturnedType:InputType这样对吗?

MethodName : ReturnedType : InputTypeis this right?

推荐答案

实际上是:

-(return type) methodName:(param1 type)param1 moreMethodName:(param2 type)param2

等，具有所需的任意数量的参数.因此该方法称为alertView:clickedButtonAtIndex: －仅嵌入了其参数.在更普通"的语言中，它等同于alertViewClickedButtonAtIndex(UIAlertView *alertView, NSInteger buttonIndex)

Etc, with as many parameters as you want. So that method is called alertView:clickedButtonAtIndex: -- it just has its parameters embedded. It's the equivalent, in a more "normal" language, of alertViewClickedButtonAtIndex(UIAlertView *alertView, NSInteger buttonIndex)

有关Obj-C语法的不错的入门知识，请查看: http://www.cocoadevcentral.com/d/learn_objectivec/

For a pretty good primer on Obj-C syntax, check out:http://www.cocoadevcentral.com/d/learn_objectivec/

有关该特定方法的信息，请查看此文档.

For info on that particular method, check out this document.

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