How to swizzle a class method on iOS?

Question

Method swizzling works great for instance methods. Now, I need to swizzle a class method. Any idea how to do it?

Tried this but it doesn't work:

void SwizzleClassMethod(Class c, SEL orig, SEL new) {  Method origMethod = class_getClassMethod(c, orig); Method newMethod = class_getClassMethod(c, new);  if(class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod)))     class_replaceMethod(c, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod)); else     method_exchangeImplementations(origMethod, newMethod); } 

Answer 1

Turns out, I wasn't far away. This implementation works for me:

void SwizzleClassMethod(Class c, SEL orig, SEL new) {      Method origMethod = class_getClassMethod(c, orig);     Method newMethod = class_getClassMethod(c, new);      c = object_getClass((id)c);      if(class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod)))         class_replaceMethod(c, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));     else         method_exchangeImplementations(origMethod, newMethod); }