根据View获取该控制器

//根据View获取控制器

- (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;

}