Ios UIPageViewController以编程方式滑动

我一直无法找到解决这个问题的办法来解决我的问题。我希望调用以编程方式滑动页面视图控制器的两个代码块

例如调用最后一块代码的

[self-viewControllerAfterViewController:self]

在

viewDidLoad

[super viewDidLoad];
indexvalue = 1;
NSLog(@"main intitated");

// Do any additional setup after loading the view, typically from a nib.
self.pageViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageViewController"];
self.pageViewController.dataSource = self;

ViewController *tvc = [self.storyboard instantiateViewControllerWithIdentifier:@"Main"];
Request *pvc;
viewcontrollers =[NSArray arrayWithObjects:tvc, pvc, nil];

[self.pageViewController setViewControllers:viewcontrollers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);

[self addChildViewController:pageViewController];
[self.view addSubview:pageViewController.view];

[self.pageViewController didMoveToParentViewController:self];

通过滑动手势在屏幕之间滑动的代码

-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
{
    NSLog([NSString stringWithFormat:@"%i", indexvalue]);

    if (indexvalue == 0 & check0 < 1) {
        check0 = 1;
        ViewController *tvc = [self.storyboard instantiateViewControllerWithIdentifier:@"Main"];
        indexvalue = 1;
        return tvc;
    }
    else {
        return nil;
    }
}

-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
    NSLog([NSString stringWithFormat:@"%i", indexvalue]);

    if (indexvalue == 1 & check1 < 1) {
        check1 = 1;
        Request *pvc = [self.storyboard instantiateViewControllerWithIdentifier:@"Friends"];
        indexvalue = 0 ;
        return  pvc;
    }
    else {
        return nil;
    }
}

-（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
{
NSLog（[NSString stringWithFormat:@“%i”，indexvalue]）；
if（indexvalue==0&检查0<1）{
检查0=1；
ViewController*tvc=[self.storyboard实例化eviewcontrollerwhiteIdentifier:@“Main”]；
指数值=1；
返回tvc；
}
否则{
返回零；
}
}
-（UIViewController*）pageViewController:（UIPageViewController*）pageViewController viewControllerAfterViewController:（UIViewController*）viewController
{
NSLog（[NSString stringWithFormat:@“%i”，indexvalue]）；
如果（indexvalue==1&检查1<1）{
检查1=1；
请求*pvc=[self.storyboard实例化eviewcontrollerwhiteIdentifier:@“Friends”]；
indexvalue=0；
返回pvc；
}
否则{
返回零；
}
}

现在添加此方法

- (UIViewController *)viewControllerAtIndex:(NSUInteger)index
{
    if (([self.pageTitles count] == 0) || (index >= [self.pageTitles count])) {
        return nil;
    }

    if (index == 0) {
   //first view
    ViewController *pageContentViewController2 = [self.storyboard  instantiateViewControllerWithIdentifier:@"ViewController"];
    return pageContentViewController2;

    }
    //second view

    Request *pageContentViewController3 = [self.storyboard instantiateViewControllerWithIdentifier:@"Request"];
    return pageContentViewController3;
}

---

我如何从“iAction”调用该方法？但您的问题不是针对iAction，您必须描述您的问题-（iAction）startWalkthrough:（id）发件人{ViewController*startingViewController=[self-viewControllerAtIndex:0]；NSArray*ViewController=@[startingViewController]；[self.pageViewController设置ViewController:ViewController方向：UIPageViewControllerNavigationDirection反向动画：未完成：无]；}

- (UIViewController *)viewControllerAtIndex:(NSUInteger)index
{
    if (([self.pageTitles count] == 0) || (index >= [self.pageTitles count])) {
        return nil;
    }

    if (index == 0) {
   //first view
    ViewController *pageContentViewController2 = [self.storyboard  instantiateViewControllerWithIdentifier:@"ViewController"];
    return pageContentViewController2;

    }
    //second view

    Request *pageContentViewController3 = [self.storyboard instantiateViewControllerWithIdentifier:@"Request"];
    return pageContentViewController3;
}