Check if subclass overrides a method

Question

Is it possible to check whether a subclass implements a method that exists either in its immediate superclass or in some superclass of its superclass, etc?

E.g. I subcla

Answer 1

Based on this answer by Mert Buran.

You can create a simple method to check whether a given object overrides a given selector (method):

-(BOOL)checkIfObject:(id)object overridesSelector:(SEL)selector {

    Class objSuperClass = [object superclass];
    BOOL isMethodOverridden = NO;

    while (objSuperClass != Nil) {

        isMethodOverridden = [object methodForSelector: selector] !=
        [objSuperClass instanceMethodForSelector: selector];

        if (isMethodOverridden) {
            break;
        }

        objSuperClass = [objSuperClass superclass];
    }

    return isMethodOverridden;
}

This can be called as follows:

[self checkIfObject:someObject overridesSelector:@selector(someSelector)];