Find UIViewController of the UIView in objective-c [Backtracking]

@interface UIView(UIViewControllerFinder)

- (UIViewController*)viewController;

@end


@implementation UIView(UIViewControllerFinder)

- (UIViewController*)viewController {
    for (UIView* next = [self superview]; next; next = next.superview) {
        UIResponder* nextResponder = [next nextResponder];
        if ([nextResponder isKindOfClass:[UIViewController class]]) {
            return (UIViewController*)nextResponder;
        }
    }
    return nil;
}

@end

Try this code for find view-controller of view self.btnSubmit (UIButton) or any object inherits from UIView

UIViewController *vc = [self.btnSubmit viewController];