Chain Responder Debugging Methods

NBResponderChainUtilities.m

@implementation UIView (FirstResponder)

- (UIView*) nb_FirstResponder
{
    if ([self isFirstResponder]){
        return self;
    }
    
    for (UIView *subView in self.subviews)
    {
        UIView *firstResponder = [subView nb_FirstResponder];
        if (firstResponder != nil)
        {
            return firstResponder;
        }
    }
    return nil;
}
@end

@implementation UIResponder (chain)

- (NSArray*) nb_responderChain
{
    return [@[self] arrayByAddingObjectsFromArray:[self.nextResponder nb_responderChain]];
}

@end