替代在Mac OS X 10.5和更高版本中的poseAsClass？ [英] Alternative to poseAsClass in Mac OS X 10.5 and higher?

问题描述

Apple已弃用 NSObject 的 poseAsClass： method for OS X v10.5以上。有没有其他方法让类构造工作？

Apple has deprecated NSObject's poseAsClass: method for OS X v10.5 and above. Is there another way to make class posing work?

推荐答案

我不认为有一个类级别的等价，可以交换两个方法的实现，这通常是使用 poseAsClass：的目的（当然，如果需要覆盖多个方法，可以交换多个方法类）。您希望 method_exchangeImplementations 在Objective-C 2.0运行时（ #import objc / runtime.h ）。警告：在调用method_exchangeImplementations之后，调用'new'方法实际上会调用原来的方法定义。

I don't think there is a class-level equivalent, but you can exchange the implementation of two methods, which was often the purpose of using poseAsClass: (of course, you can exchange more than one method if you need to override multiple methods in a class). You want method_exchangeImplementations in the Objective-C 2.0 runtime (#import objc/runtime.h). A word of warning: after calling method_exchangeImplementations, calling the 'new' method actually calls the original method definition.

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