获取view所在的viewController

//获取view所在的ViewController
- (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;
}