objective c - How can I invoke a class method by NSInvocation? -

we can nsmethodsignature + (nsmethodsignature *)instancemethodsignatureforselector:(sel)aselector of nsobject. construct nsinvocation + (nsinvocation *)invocationwithmethodsignature:(nsmethodsignature *)signature

here problem. can method signature of instance，how class method?

you can class methods by:

nsmethodsignature *pms = [[yourobject class] methodsignatureforselector: (sel)aselector]; 

the fragment [yourobject class] returns instance of class object (singleton) can use class methods.

add: new info comments below. can following:

nsmethodsignature *pms = [yourobject methodsignatureforselector: (sel)aselector];