ios 通过当前view得到所在的viewcontroller

@implementation UIView (GetVCAdditions)

• (UIViewController *)GetiewController {
  Class vcc = [UIViewController class];
  UIResponder *responder = self;
  while ((responder = [responder nextResponder]))
  if ([responder isKindOfClass: vcc])
  return (UIViewController *)responder;
  return nil;
  }