IBAction 是否必须反映 Interface Builder 上的方法？
下面两种方法有什么区别，两者都是通过 Interface builder 进行映射的，
- (void) showNYTimes:(id)sender
and
- (IBAction) showNYTimes:(id)sender
两者都非常适合我的要求，我能够在 IB 上映射这两种方法。但是选择哪一个，IBAction 仅仅是为了代码的可读性吗？
谢谢。
What is the difference between below two methods, both are meant for mapping through Interface builder
- (void) showNYTimes:(id)sender
and
- (IBAction) showNYTimes:(id)sender
Both are working perfectly for my requirement, I am able to map both ways on IB. But which one to opt, is IBAction meant for only readability of code?
Thanks.
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IBAction被#define定义为 void，因此就 Objective C 而言，它们是相同的；它意味着向 Interface Builder 发出一个信号，表明该特定方法可以连接到视图。 "IBAction - 使用的类型限定符通过 Interface Builder 将以编程方式添加的操作与其为项目定义的内部操作方法列表进行同步。”因此，它不仅仅是可读性；这是一个对 IB 有意义的声明。不过，我不确定您如何在 Interface Builder 中映射您的
(void)方法。只有(IBAction)方法对我来说有一个小圆圈。IBActionis#defined as void, so as far as Objective C is concerned they're the same; it's meant to be a signal to Interface Builder that this particular method is available to be hooked up to a view. "IBAction - Type qualifier used by Interface Builder to synchronize actions added programmatically with its internal list of action methods defined for a project."So it's more than just readability; it's a declaration that's meaningful to IB. I'm not sure how you were able to map your
(void)method in Interface Builder, though. Only(IBAction)methods have the little circle in the gutter for me.