Question

我有pageViewController显示一组图片。当我从右向左滚动时，一切都很好，但是当我从左向右滚动时，所有图像都会移动（一块图像仍然可见：

我必须提一下，我在imageView和superview UIImageView之间的故事板中应用约束来填充整个屏幕。

这是我的pageViewController：

ConversationContainerVC : UIPageViewControllerDataSource{

        func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {

        let itemController = viewController as! ConversationImageElementVC

        if itemController.itemIndex > 0 {
            return getItemController(itemController.itemIndex-1)
        }

        return nil
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        let segueName = segue.identifier
        if segueName == Segues.Main.ConversationEmbedSegue{
            let destinationVC = segue.destinationViewController as! UIPageViewController
            destinationVC.dataSource = self

            pageViewController = destinationVC
        }
    }

    private func setPageVCImages(){
        if contentImages.count > 0{

            let firstController = getItemController(0)!
            let startingViewControllers = [firstController]
            pageViewController.automaticallyAdjustsScrollViewInsets = false
            self.pageViewController.setViewControllers(startingViewControllers as [AnyObject], direction: .Forward, animated: false, completion: nil)
        }
    }





    func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {

        let itemController = viewController as! ConversationImageElementVC

        if itemController.itemIndex+1 < contentImages.count {
            return getItemController(itemController.itemIndex+1)
        }

        return nil
    }

    private func getItemController(itemIndex: Int) -> ConversationImageElementVC? {

        if itemIndex < contentImages.count {
            let pageItemController = self.storyboard!.instantiateViewControllerWithIdentifier(Ids.Main.ConversationImageElementVC) as! ConversationImageElementVC
            pageItemController.itemIndex = itemIndex
            pageItemController.pollImageAssociated = contentImages[itemIndex]
            return pageItemController
        }

        return nil
    }

    // MARK: - Page Indicator


    func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int {
        return 0
    }

    func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
        return 0
    }
}

这是我的pageViewControllerItem源代码：

class ConversationImageElementVC: UIViewController {

    var itemIndex = 0
    var image: UIImage!
    @IBOutlet weak var pollImage: UIImageView!

    override func viewDidLoad() {
        self.pollImage.image = image

    }

}

Answer 1

我最终通过将UIImageView clipsToBounds属性设置为true并保持aspect fill模式来解决此问题。您还可以通过在UIImageView身份检查器上启用“剪辑子视图”来设置故事板。

pageViewController中的内容转换

1 个答案: