如何从单元格触摸移动页面视图控制器

Question

我有几个问题，请帮帮我。

我想移动UIPageViewController的视图控制器，如果我触摸didSelectItemAt Delegate协议上的CollectionViewCell。请帮助我如何编写或修改以下代码。

谢谢。

[查看页面]

class ListPageViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet weak var openSlideMenuButton: UIBarButtonItem!
@IBOutlet weak var menuCollectionView: UICollectionView!
let menuCell = menuViewCell()
let menuItemNames = ["menu1", "menu2", "menu3", "menu4"]

@IBAction func moveHomeVC(_ sender: UIBarButtonItem) {
    self.navigationController?.popToRootViewController(animated: true)
}
override func viewDidLoad() {
    super.viewDidLoad()    
    ///////////////////////////////////////////////////////
    // Define NavigationBar
    self.navigationItem.hidesBackButton = true
    self.navigationController?.navigationBar.tintColor = UIColor.black
    self.navigationController?.navigationBar.barTintColor = UIColor.white
    var nevigatorHeight: CGFloat = 0
    nevigatorHeight = (self.navigationController?.navigationBar.frame.size.height)!
    //print("Navigation Height : (nevigatorHeight)")
    ///////////////////////////////////////////////////////
    // Define Menu
    menuCollectionView.delegate = self
    menuCollectionView.dataSource = self
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return menuItemNames.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "menuCellId", for: indexPath) as! menuViewCell
    cell.menuLabel.text = menuItemNames[indexPath.row]
    return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    //print("This page number is (rootPage.viewControllerList.index(of: viewController)!).")
}   
}
[PageView]
import UIKit
class RootPageViewController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
lazy var viewControllerList: [UIViewController] = {
    let sb = UIStoryboard(name: "Main", bundle: nil)
    let vc1 = sb.instantiateViewController(withIdentifier: "RedVC")
    let vc2 = sb.instantiateViewController(withIdentifier: "BlueVC")
    let vc3 = sb.instantiateViewController(withIdentifier: "YellowVC")
    let vc4 = sb.instantiateViewController(withIdentifier: "GrayVC")
    return [vc1, vc2, vc3, vc4]
}()

override func viewDidLoad() {
    super.viewDidLoad()
    self.dataSource = self
    self.delegate = self
    if let firstViewController = viewControllerList.last {
        self.setViewControllers([firstViewController], direction: .forward, animated: true, completion: nil)
    }
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
    let currentPage = viewControllerList.index(of: viewController)
    print("This page number is (currentPage!) on your before gesture.")
    guard let vcIndex = currentPage else { return nil }
    let previousIndex = vcIndex - 1
    guard previousIndex >= 0 else { return nil }
    guard viewControllerList.count > previousIndex else { return nil }
    return viewControllerList[previousIndex]
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
    let currentPage = viewControllerList.index(of: viewController)

    print("This page number is (currentPage!) on your after gesture. ")
    guard let vcIndex = currentPage else { return nil }
    let nextIndex = vcIndex + 1
    guard viewControllerList.count != nextIndex else { return nil }
    guard viewControllerList.count > nextIndex else { return nil }
    return viewControllerList[nextIndex]
}

}

在此处输入图像描述

Answer 1

您可以使用UIPageviewController 中的self.pageViewController.setViewControllers(viewControllers, direction: .Forward, animated: true, completion: nil)方法。

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