oc pdfview使用pageviewcontroller后旋转页面，页面没有完整显示

这可能是因为您没有正确处理旋转事件所导致的问题。在使用UIPageViewController时，您需要在其代理方法中处理旋转事件并更新页面视图。以下是一个示例代码片段，可以在其中更新UIPageViewController的子视图以正确显示当前页面：

func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
    // Get the current page index
    guard let currentViewController = pageViewController.viewControllers?.first,
          let currentIndex = orderedViewControllers.firstIndex(of: currentViewController) else {
        return
    }
    
    // Get the index of the pending view controller
    guard let pendingIndex = orderedViewControllers.firstIndex(of: pendingViewControllers.first!) else {
        return
    }
    
    // Determine the direction of the transition
    if pendingIndex > currentIndex {
        // User is swiping to the right
        // Update the layout of the next page
        if let nextViewController = orderedViewControllers[safe: pendingIndex + 1] as? PDFViewController {
            nextViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
            nextViewController.view.layoutIfNeeded()
        }
    } else if pendingIndex < currentIndex {
        // User is swiping to the left
        // Update the layout of the previous page
        if let previousViewController = orderedViewControllers[safe: pendingIndex - 1] as? PDFViewController {
            previousViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
            previousViewController.view.layoutIfNeeded()
        }
    }
}

func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
    // Get the current page index
    guard let currentViewController = pageViewController.viewControllers?.first,
          let currentIndex = orderedViewControllers.firstIndex(of: currentViewController) else {
        return
    }
    
    // Update the layout of the current page
    if let currentPDFViewController = currentViewController as? PDFViewController {
        currentPDFViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
        currentPDFViewController.view.layoutIfNeeded()
    }
    
    // Update the layout of the adjacent pages
    if completed {
        if let previousViewController = orderedViewControllers[safe: currentIndex - 1] as? PDFViewController {
            previousViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
            previousViewController.view.layoutIfNeeded()
        }
        
        if let nextViewController = orderedViewControllers[safe: currentIndex + 1] as? PDFViewController {
            nextViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
            nextViewController.view.layoutIfNeeded()
        }
    }
}

在上面的代码中，我们使用了UIPageViewControllerDelegate的两个方法来处理旋转事件：`pageViewController(_:willTransitionTo:)`和`pageViewController(_:didFinishAnimating:previousViewControllers:transitionCompleted:)`。在`pageViewController(_:willTransitionTo:)`方法中，我们根据用户的滑动方向更新了上一页或下一页的布局。在`pageViewController(_:didFinishAnimating:previousViewControllers:transitionCompleted:)`方法中，我们根据当前页面的索引更新了当前页面和相邻页面的布局。

请注意，上面的示例代码仅供参考，您需要根据自己的代码和布局来进行相应的修改。