包含模型数据的容器视图中的页面视图控制器

Posted 2023-03-13

【中文标题】包含模型数据的容器视图中的页面视图控制器

【英文标题】：Page View controller in container view with data from model

【发布时间】：2017-03-30 17:10:55

【问题描述】：

我有一个显示页面视图控制器的容器视图。这个视图控制器然后显示 2 个相同的视图控制器，我可以来回翻页。

        import UIKit

class ViewController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate 

var pages = [UIViewController]()

override func viewDidLoad() 
super.viewDidLoad()

self.delegate = self
self.dataSource = self

let page1: UIViewController! = storyboard?.instantiateViewController(withIdentifier: "page1")
let page2: UIViewController! = storyboard?.instantiateViewController(withIdentifier: "page2")

pages.append(page1)
pages.append(page2)

setViewControllers([page1], direction: UIPageViewControllerNavigationDirection.forward, animated: true, completion: nil)


func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? 
let currentIndex = pages.index(of: viewController)!
let previousIndex = abs((currentIndex - 1) % pages.count)
print("previous Index", pages[previousIndex])
return pages[previousIndex]


func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? 
let currentIndex = pages.index(of: viewController)!
let nextIndex = abs((currentIndex + 1) % pages.count)
print("next Index", pages[nextIndex])
return pages[nextIndex]


func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int 
return pages.count


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

我想做的是只创建一个视图控制器，然后用数组中的数据填充该视图控制器

数组：

var pageTitles : Array<String> = ["God vs Man", "Cool Breeze", "Fire Sky"]
var pageImages : Array<String> = ["page1.png", "page2.png", "page3.png"]

如果容器视图控制器呈现页面视图控制器，这是否可能？

任何帮助将不胜感激......

丹尼斯·安吉尔

【参考方案1】：

如果您只想管理一个具有多数据和UIPageController 的控制器，您应该创建一个视图控制器并执行类似的操作：

class PageViewController: UIViewController  // Id: 'PageViewController'
    // MARK: @IBOutlet

    /// Menu button item.
    @IBOutlet weak var image: UIImageView!

    /// Pagination controller.
    @IBOutlet weak var pagination: UIPageControl!

    // MARK: Variable
    struct Page 
        var title: String
        var image: String
        init(title: String, image: String) 
            self.title = title
            self.image = image
        
    
    let data: [Page] = []
    var currentIndex = 0

    override func viewDidLoad() 
        // Init data
        data.append(Page(title: "title1" , image: "page1.png"))
        data.append(Page(title: "title2" , image: "page2.png"))

        setValues(currentIndex)

        // Setup slide handler
        let leftSwipe = UISwipeGestureRecognizer(target: self,
                                                 action: #selector(PageViewController(_:)))
        let rightSwipe = UISwipeGestureRecognizer(target: self,
                                                  action: #selector(PageViewController(_:)))
        leftSwipe.direction = .left
        rightSwipe.direction = .right
        self.view.addGestureRecognizer(leftSwipe)
        self.view.addGestureRecognizer(rightSwipe)
    

    /**
     Handle swipes allows to switch page.
     */
    func handleSwipes(_ sender: UISwipeGestureRecognizer) 
        let size = self.data.count
        let currentPosition = self.pagination.currentPage

        if sender.direction == .left && currentPosition < size-1 
            nextPage()
         else if sender.direction == .right && currentPosition > 0 
            previousPage()
        
    

    private func setValues(index: Int) 
        self.pagination.currentPage = currentIndex
        self.title = pageTitles[index]
        self.image = pageImages[index]
    

    // Button or see UIPageControl @IBOutlet
    private func nextPage() 
        currentIndex = abs((currentIndex + 1) % pages.count)
        print("next Index", pages[currentIndex])
        setValues(currentIndex)
    

    // Button or see UIPageControl @IBOutlet
    private func previousPage() 
        currentIndex = abs((currentIndex - 1) % pages.count)
        print("next Index", pages[currentIndex])
        setValues(currentIndex)
    

    // Other functions...
    // ...