Question

目标：使viewcontroller具有多个页面，并且可以通过分段控制器进行交换，页面内容可以垂直滚动

细节：

我制作了一个pagviewcontroller并将其作为子视图嵌入到主视图控制器中

//add pageviewcontroller as subview to viewcontroller
if let vc = storyboard?.instantiateViewControllerWithIdentifier("ProfileEditController"){

    self.addChildViewController(vc)
    self.view.addSubview(vc.view)

    EditTabs = vc as! UIPageViewController
    EditTabs.dataSource = self
    EditTabs.delegate = self

    //define First page
    EditTabs.setViewControllers([pagesAtIndexPath(0)!], direction:.Forward, animated: true, completion: nil)
    EditTabs.didMoveToParentViewController(self)

    //bring segmented view buttons to front of pageViews
    self.view.bringSubviewToFront(self.topTabs)
}

我调用了pageViewController函数，我通过恢复标识符添加页面

我通过获取pageindex并设置viewcontroller来管理分段视图控制器：

EditTabs.setViewControllers([pagesAtIndexPath(0)!], direction:.Reverse, animated: true, completion: nil)

子页面内部有滚动视图以保存内容
我通过segue调用子页滚动视图并且工作正常

案例：

一切正常只有子页面的滚动视图根本不起作用

如何解决这个问题？非常感谢您的指导

谢谢，

Answer 1

我创建了一个带有PageViewController的视图控制器，其中有三个视图控制器，其中包含滚动视图。它工作正常。

导入UIKit class ViewController：UIViewController，UIPageViewControllerDataSource {

var viewControllers : [UIViewController]?
override func viewDidLoad() {
    super.viewDidLoad()
    CreatePageView()
}

func CreatePageView() {

    SetupViewControllers()

    let pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
    pageViewController.dataSource = self
    pageViewController.setViewControllers([(viewControllers?[0])!] , direction: .forward, animated: false, completion: nil)
    pageViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.size.width, height: view.frame.size.height);
    pageViewController.view.frame = CGRect(x: 0, y: 0, width: view.frame.size.width, height: view.frame.size.height);
    addChildViewController(pageViewController)
    view.addSubview(pageViewController.view)
    pageViewController.didMove(toParentViewController: self)
    pageViewController.view.backgroundColor = UIColor.blue
}

func SetupViewControllers() {
    let firstVC = UIViewController()
    firstVC.view.tag = 100
    firstVC.view.backgroundColor = UIColor.red
    AddScrollView(bgView: firstVC.view)
    let secondVC = UIViewController()
    secondVC.view.tag = 101
    secondVC.view.backgroundColor = UIColor.brown
    AddScrollView(bgView: secondVC.view)
    let thirdVC = UIViewController()
    thirdVC.view.tag = 102
    thirdVC.view.backgroundColor = UIColor.purple
    AddScrollView(bgView: thirdVC.view)

    viewControllers = [firstVC,secondVC,thirdVC]

}

func AddScrollView(bgView: UIView) {
    let scrollView = UIScrollView()
    scrollView.frame = CGRect.init(x: 10, y: 10, width: bgView.frame.width-20, height: bgView.frame.height-20)
    scrollView.backgroundColor = UIColor.init(red: 0.34, green: 0.45, blue: 0.35, alpha: 0.9)
    bgView.addSubview(scrollView)
    scrollView.contentSize = CGSize.init(width: scrollView.frame.size.width, height: scrollView.frame.size.height+200)
}


func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
    if viewController.view.tag == 101 {
        return viewControllers?[0]
    }
    else if viewController.view.tag == 102{
        return viewControllers?[1]
    }
    else{
        return viewControllers?[2]
    }
}

public func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
    if viewController.view.tag == 101 {
        return viewControllers?[0]
    }
    else if viewController.view.tag == 102{
        return viewControllers?[1]
    }
    else{
        return viewControllers?[2]
    }
}

func presentationCount(for pageViewController: UIPageViewController) -> Int {
    return (viewControllers?.count)!
}

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

}

Answer 2

在Stack上经常会出现类似的问题。对于我自己在非常相似的情况下的问题，我也能够在其自己的视图中使用scrollview而没有问题，但是当在另一个子视图中用作子视图时，我需要以编程方式设置scrollview维度。

Swift 2

scrollView.setFrame(CGRectMake(0, 0, DEVICE_WIDTH, DEVICE_HEIGHT))

或

Swift 3

scrollView.setFrame(CGRect(x: 0, y: 0, width: DEVICE_WIDTH, height: DEVICE_HEIGHT))

进一步（通常被视为更好）的建议，根据内容自动设置大小。

var contentRect = CGRectZero
for view in self.scrollView.subviews {
    contentRect = CGRectUnion(contentRect, view.frame)
}
self.scrollView.contentSize = contentRect.size

希望这会有所帮助。

子视图滚动不能正常工作SWIFT

2 个答案: