2021-11-17 iOS获取当前视图的当前控制器

- (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;

}