Question

I have a class which uses resolveInstanceMethod to dynamically implement methods.
When I call the dynamically implemented methods from other parts of the code, the compiler emits a warning that the object may not respond to the selector. I would like the compiler to not emit such warnings for this class, but I don’t want to suppress warnings when I invoke an invalid selector on other classes. Is this possible?

Answer 1

Assuming you know the method signatures that will be dynamically resolved at compile time, you can declare ’em in an informal category:

@interface MyDynamicallyResolvingClass(MethodsThatWillResolveAtRuntime)
... declare the methods here ...
@end

No need to provide an implementation.

If you don’t know the signatures — if the method names are dynamic, too — then you’ll need to use either -performSelector: (or the single or double object argument variants) or you will likely want to use NSInvocation, unless performance is a major concern (if it is, there are alternative solutions that are significantly more fiddly).