我已经按照pageviewcontroller教程创建了一个图像滑块。然后我调整它以插入tableviewcell,因为我想在表格中的图像滑块。
我喜欢在全屏幕中使用相同代码或嵌入到另一个视图中的想法。
但是,当我这样做时,pageviewafter和pageviewbefore事件在滑动时不会触发。我怀疑tableviewcontroller或cell正在吞噬事件,所以pageviewcontroller没有收到它们。
我是兼职ios开发者,所以寻找任何建议,我可以检查/克服我的问题。
一些代码细节按要求。我在回溯图像完成回调后添加了我的PageViewController。 plantPhotoContainerView是静态单元格内的UIView,随故事板一起添加。
self.plantPhotoContainerView.addSubview(vc.view)
pageviewcontroller将委托设置为自身,我当前忽略了控制器中传递的图像,只是使用了一些测试图像:
class ImageSliderViewController: UIPageViewController, UIPageViewControllerDataSource {
init(images: [String]) {
super.init(transitionStyle: UIPageViewController.TransitionStyle.scroll, navigationOrientation: UIPageViewController.NavigationOrientation.horizontal, options: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
var images = ["Growers", "Home", "Media"]
override func viewDidLoad() {
super.viewDidLoad()
dataSource = self
view.backgroundColor = UIColor.yellow
let imageViewController = ImageViewController()
imageViewController.imageName = images.first
let viewControllers = [imageViewController]
setViewControllers(viewControllers, direction: .forward, animated: true, completion: nil)
}
override func viewDidLayoutSubviews() {
self.view.translatesAutoresizingMaskIntoConstraints = false
view.leftAnchor.constraint(equalTo: view.superview!.leftAnchor).isActive = true
view.rightAnchor.constraint(equalTo: view.superview!.rightAnchor).isActive = true
view.topAnchor.constraint(equalTo: view.superview!.topAnchor).isActive = true
view.bottomAnchor.constraint(equalTo: view.superview!.bottomAnchor).isActive = true
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
let currentImageName = (viewController as! ImageViewController).imageName!
let currentIndex = images.firstIndex(of: currentImageName)!
if currentIndex < images.count - 1 {
let imageViewController = ImageViewController()
imageViewController.imageName = images[currentIndex + 1]
return imageViewController
}
return nil
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
let currentImageName = (viewController as! ImageViewController).imageName!
let currentIndex = images.firstIndex(of: currentImageName)!
if currentIndex > 0 {
let imageViewController = ImageViewController()
imageViewController.imageName = images[currentIndex - 1]
return imageViewController
}
return nil
}
}
好吧,我最终找到了一个有帮助的帖子。添加子视图时,需要两个额外的行才能将默认手势功能传递给pageviewcontroller。希望这有助于其他人。
self.addChild(vc)
self.plantPhotoContainerView.addSubview(vc.view)
vc.didMove(toParent: self)
老实说,我并不完全明白这是做什么的,也许精通快速框架的人可以详细阐述。