Inspect the responder chain

gistfile1.m

// http://stackoverflow.com/a/4242037/1306872

- (void)inspectResponderChainFromSender:(id)sender
{
    if ([sender isKindOfClass:[UIResponder class]]) {
        NSMutableArray *responderChain = [NSMutableArray array];
        [responderChain insertObject:sender atIndex:0];

        while ((sender = [sender nextResponder])) {
            if ([sender nextResponder]) {
                [responderChain insertObject:[sender nextResponder] atIndex:0];
            }
        }

        NSLog(@"Responder Chain:");
        for (id obj in [responderChain copy]) {
            NSLog(@"%@\n***", obj);
        }
    }
}