iOS 获取View所在控制器UIViewController

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

• 调用
  SecondViewController *Second = [[SecondViewController alloc] init];
  UIViewController *controller = [self viewController];//调用
  [controller.navigationController pushViewController: Second animated:YES];