将翻转动画应用于 UIPageViewController iOS Xamarin

Question

我想要一本对我的应用有感觉的书。为此，我有一个 UIPageViewController 滚动浏览多个页面。一切正常。目前，UIPageViewController 的 Transition 类型是 Page curl，但我想实现更像翻转的东西（比如硬封面翻页）。

我已经实现了以下内容：-

public new UIViewController GetNextViewController(UIPageViewController pageViewController, UIViewController referenceViewController)
  {
   var page = referenceViewController as IpadNewController;
   var index = page.pageIndex;
   index ++;
   if(index == numberOfPages)
   {
    return null;
   }
   else{
    return ViewControllerAtIndex (index);
   }

  }

  public new UIViewController GetPreviousViewController(UIPageViewController pageViewController, UIViewController referenceViewController)
  {

   var page = referenceViewController as IpadNewController;
   var index = page.pageIndex;
   if(index == 0)
   {
    return null;

   }else{
    index --;
    return ViewControllerAtIndex (index);
   }


  } 

编辑

    private void LoadData(List<Models.NewsModel> viewPages)
      {
       if (viewPages != null)
       {
        if (viewPages.Count % 5 == 0)
        {
         numberOfPages =  viewPages.Count / 5;

        }
        else
        {
         numberOfPages =  viewPages.Count / 5 + 1;

        }
       }
       this.DataSource = this;
       var startingViewController = this.ViewControllerAtIndex(0);
       var viewControllers = new UIViewController[] { startingViewController };
       if (startingViewController != null)
       {
        this.SetViewControllers(viewControllers, UIPageViewControllerNavigationDirection.Forward, false, null);
       }
       this.View.Frame = View.Bounds;

      }
private IpadNewController ViewControllerAtIndex(int index)
      {
       if (numberOfPages == 0 || index >numberOfPages)
       {
        return null;
       }
       else
       {
        newIpadController = (IpadNewController)this.Storyboard.InstantiateViewController("iPadNew_VC");

        newIpadController.pageIndex = index;

       }
       return newIpadController;
      }

有没有一种方法可以在不使用任何外部库的情况下将过渡动画更改为翻转而不是卷曲？

Answer 1

在UIPageViewController 级别，UIViewController 只有PageCurl 和Scroll 转换

代替使用UIPageViewController，您可以实现自己的视图容器并使用TransitioningDelegate 为您的UIViewController 系列定义动画并将其应用于每个UIViewController 的UIViewController.TransitioningDelegate 属性.

Xamairn 有一个名为 LookInside 的示例，它使用实现自定义转换的自定义演示控制器。

参考：https://developer.xamarin.com/samples/monotouch/ios8/LookInside/