How to add a class method at runtime for Obj-C? [duplicate]

Question

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How to dynamically add a class method? (2 answers)

Closed 8 years ago.

Objc runtime provides a function, class_addMethod(), to try adding an instance method at runtime.

Is there any function which could try adding an class method to a class at runtime? Or, how can I achieve this purpose?

Answer 1

Just add the method to the metaclass of the class. Every non-meta class is an instance of its metaclass, so a class method is really just an instance method of a metaclass.