无法查看单击菜单按钮

Question

我在storyboard.rootview屏幕上有两个屏幕，就像启动画面一样，另一个是使用带标题的集合视图创建的主屏幕。

在标题中我点击了UIButton，我应该可以显示我的应用程序的菜单选项，这也是一个集合视图。因为我对iOS编程比较新，所以我跟着a video in youtube

问题是根据视频我能够创建一个集合视图作为子视图但是在实现了collecton视图功能并运行应用程序后无法查看我配置的单元格

viewcontroller.swift的代码就像这样

import UIKit

class ViewController: UIViewController,UICollectionViewDataSource,UICollectionViewDelegate{
    var tableLabel:[String]=[""]
    var tableImage: [String]=[""]

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    let settingLauncher=SettingLauncher()

    @IBAction func menuButtonTaped(sender: UIButton) {

        settingLauncher.showSettings()

    }

    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return tableLabel.count
    }

    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell:CellCollectionViewCell=collectionView.dequeueReusableCellWithReuseIdentifier("MyCell", forIndexPath: indexPath) as! CellCollectionViewCell
        cell.layer.cornerRadius=10

        cell.labelOne.text=tableLabel[indexPath.row]
        cell.imageOne.image=UIImage(named:tableImage[indexPath.row])
        cell.imageOne.layer.cornerRadius=41
        cell.imageOne.layer.masksToBounds=true
        return cell
    }
    func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView
    {

        let header = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionHeader, withReuseIdentifier: "HomeHeader", forIndexPath: indexPath) as! CellCollectionReusableView

        return header
    }






    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

和settingLauncher.swift文件就像这样

import UIKit

class SettingLauncher:NSObject,UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout{

    override init() {
        super.init()

        collectionView.dataSource=self
        collectionView.delegate=self

        collectionView.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: cellId)


    }

    let blackView=UIView()


    var collectionView:UICollectionView={
        let layout = UICollectionViewLayout()
        let cv=UICollectionView(frame: .zero, collectionViewLayout: layout)
        cv.backgroundColor=UIColor.blueColor()
        return cv
    }()

    let cellId="cellId"


    func showSettings() {

     if let window = UIApplication.sharedApplication().keyWindow{
        blackView.backgroundColor=UIColor(white: 0,alpha: 0.5)
        blackView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(dismissShade)))
        window.addSubview(blackView)
        window.addSubview(collectionView)
        let height:CGFloat=200
        let y:CGFloat=window.frame.height-height
        collectionView.frame=CGRectMake(0, window.frame.height, window.frame.width, height)
        blackView.frame=window.frame
        UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .CurveEaseInOut, animations: {

            self.collectionView.frame=CGRectMake(0, y, self.collectionView.frame.width, self.collectionView.frame.height)
            }, completion: nil)

    }
    }

    func dismissShade(){
        UIView.animateWithDuration(0.5){

            self.blackView.alpha=0
            if let window = UIApplication.sharedApplication().keyWindow{
            self.collectionView.frame=CGRectMake(0, window.frame.height, self.collectionView.frame.width, self.collectionView.frame.height)
            }


        }

    }



    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 3
    }



    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

        let cell = collectionView.dequeueReusableCellWithReuseIdentifier(cellId, forIndexPath: indexPath)

        cell.backgroundColor=UIColor.redColor()

        return cell

    }

}

app构建成功没有任何错误，但我无法查看单击菜单按钮后创建的集合中的单元格

点击菜单

之前的屏幕截图

点击菜单

后的屏幕截图

Answer 1

您应该将collectionView dataSource和delegate设置为ViewController课程中的viewController（就像您对SettingLauncher课程所做的那样）。