Iphone UIPageviewController-在不更改方向的情况下从两页模式更改为一页模式

我使用UIPageViewController一次显示两个视图控制器。在显示了两个这样的视图之后，我想在不改变方向的情况下显示单视图控制器，它固定为横向。我正在用iPad制作

以下是我为此使用的代码：

-(id)initWithViewControllers:(NSMutableArray *)Controllers
{
self = [super initWithNibName:nil bundle:nil];
if(self)
{
    self.VControllers =  Controllers;

    pageController = [[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation: UIPageViewControllerNavigationOrientationHorizontal options:nil];

    self.pageController.view.frame = CGRectMake(12.0f, 10.0f, 748.0f, 985.0f);
    self.pageController.delegate = self;
    self.pageController.dataSource = self;
    [self.pageController setViewControllers:[NSArray arrayWithObject:[VControllers objectAtIndex:0] ] direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:^(BOOL finished)
     {
     }];
    [self addChildViewController:self.pageController];
    [self.view addSubview:self.pageController.view];   
}
return self;
}

- (UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController *)pageViewController
               spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation
{
if(UIInterfaceOrientationIsPortrait(orientation))
{
 //Set the array with only 1 view controller
    UIViewController *currentViewController = [self.pageController.viewControllers objectAtIndex:0];
    NSArray *viewControllers = [NSArray arrayWithObject:currentViewController];
    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];

    //Important- Set the doubleSided property to NO.
    self.pageController.doubleSided = NO;
    //Return the spine location
    return UIPageViewControllerSpineLocationMin;

}

else
{
NSArray *viewControllers = nil;

    exampleViewController *currentViewController = [self.pageController.viewControllers objectAtIndex:0];

    NSUInteger currentIndex = [self.VControllers indexOfObject:currentViewController];

    if(currentIndex == 0 || currentIndex %2 == 0)
    {
        UIViewController *nextViewController = [self pageViewController:self.pageController viewControllerAfterViewController:currentViewController];
        viewControllers = [NSArray arrayWithObjects:currentViewController, nextViewController, nil];
    }
    else
    {
        UIViewController *previousViewController = [self pageViewController:self.pageController viewControllerBeforeViewController:currentViewController];
        viewControllers = [NSArray arrayWithObjects:previousViewController, currentViewController, nil];
    }
    //Now, set the viewControllers property of UIPageViewController
    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];

    return UIPageViewControllerSpineLocationMid;
}
}


 - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
 {
int index = [self.VControllers indexOfObject:viewController];

//[self checkViewControllers];
if (index - 1 >= 0)
{
    ind = index;
    return [self.VControllers objectAtIndex:index - 1];
}
ind = index;
return nil;
}

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
int index = [self.VControllers indexOfObject:viewController];
//[self checkViewControllers];
if (index + 1 < [self.VControllers count])
{
    ind = index;
    return [self.VControllers objectAtIndex:index + 1];
}
ind = index;

return nil;
}

-（id）initWithViewController:（NSMutableArray*）控制器
{
self=[super initWithNibName:nil bundle:nil]；
如果（自我）
{
self.vcontroller=控制器；
pageController=[[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl导航方向：UIPageViewControllerNavigationOrientation:UIPageViewControllerNavigationOrientation水平选项：nil]；
self.pageController.view.frame=CGRectMake（12.0f、10.0f、748.0f、985.0f）；
self.pageController.delegate=self；
self.pageController.dataSource=self；
[self.pageController setViewControllers:[NSArray arrayWithObject:[VControllers objectAtIndex:0]]方向：UIPageViewControllerNavigationDirectionForward动画：是完成：^（BOOL完成）
{
}];
[self addChildViewController:self.pageController]；
[self.view addSubview:self.pageController.view]；
}
回归自我；
}
-（UIPageViewControllerSpineLocation）pageViewController:（UIPageViewController*）pageViewController
spineLocationForInterfaceOrientation：（UIInterfaceOrientation）方向
{
if（UIInterfaceOrientationSportRait（方向））
{
//仅使用1个视图控制器设置阵列
UIViewController*currentViewController=[self.pageController.ViewController对象索引：0]；
NSArray*ViewController=[NSArray arrayWithObject:currentViewController]；
[self.pageController setViewControllers:viewcontrollerdirection:UIPageViewControllerNavigationDirectionForward动画：是完成：NULL]；
//重要信息-将双面属性设置为“否”。
self.pageController.doubleside=否；
//返回脊椎位置
返回UIPageViewControllerSpineLocationMin；
}
其他的
{
NSArray*视图控制器=零；
示例ViewController*currentViewController=[self.pageController.ViewController对象索引：0]；
NSUInteger currentIndex=[self.vController索引对象：currentViewController]；
如果（currentIndex==0 | | currentIndex%2==0）
{
UIViewController*nextViewController=[self-pageViewController:self.pageController viewControllerAfterViewController:currentViewController]；
viewControllers=[NSArray arrayWithObjects:currentViewController，nextViewController，nil]；
}
其他的
{
UIViewController*previousViewController=[self-pageViewController:self.pageController-viewControllerBeforeViewController:currentViewController]；
viewControllers=[NSArray arrayWithObjects:previousViewController，currentViewController，nil]；
}
//现在，设置UIPageViewController的ViewController属性
[self.pageController setViewControllers:viewcontrollerdirection:UIPageViewControllerNavigationDirectionForward动画：是完成：NULL]；
返回UIPageViewControllerSpineLocationMid；
}
}
-（UIViewController*）页面视图控制器：（UIPageViewController*）页面视图控制器视图控制器预览控制器：（UIViewController*）视图控制器
{
int index=[self.VControllers indexOfObject:viewController]；
//[自检视图控制器]；
如果（索引-1>=0）
{
ind=指数；
返回[self.vController对象索引：索引-1]；
}
ind=指数；
返回零；
}
-（UIViewController*）pageViewController:（UIPageViewController*）pageViewController viewControllerAfterViewController:（UIViewController*）viewController
{
int index=[self.VControllers indexOfObject:viewController]；
//[自检视图控制器]；
如果（索引+1<[self.vController计数]）
{
ind=指数；
返回[self.vController对象索引：索引+1]；
}
ind=指数；
返回零；
}

我需要的是在两次显示双视图之后显示单视图控制器。此功能我还无法激活。谁能给我指点一下吗

---

提前感谢。

而且…您的问题是…？我想在显示两个视图几次之后，在不改变方向的情况下显示单视图控制器。“pushViewController”或“addSubview”是否有问题？方向不会自然改变，除非据我所知你亲自改变。任何视图控制器或方向都没有问题。问题是我想将页面视图控制器从两种模式更改为一种页面模式。如果我改变屏幕方向，它会起作用，但是我需要在不改变方向的情况下做它。考虑使用视图方法：“StestDuffsDead”和“StestDuffsStand”。它迫使少数人重新绘制自己，根据属性重新布置组件。当你改变方向时，它也被称为。