Ios 我曾尝试在ui上显示集合视图，但无法显示。有人能帮我吗？

在这里，我试图实现集合视图，但无法实现，在滚动视图中，我放置了集合视图。这样实现是否正确？如果不正确，您能否提供任何解决方案，使其显示在ui和 在这个滚动视图上实现了视图，所有的元素都放在它上面。这是我的代码，如何缩放选定的特定图像，还有人能帮我吗

    @IBOutlet var collectionView: UICollectionView!
    @IBOutlet var navigationBar: UINavigationBar!
    @IBOutlet var imageView: UIImageView!
    @IBOutlet var pageControl: UIPageControl!
    @IBOutlet var nameLabel: UILabel!
    @IBOutlet var priceLabel: UILabel!
    @IBOutlet var textview: UITextView!
    @IBOutlet var scrollView: UIScrollView!

    var productName = [String]()
    var productprice = [String]()
    var productdescription :String?
    var thumbnailimageArray = [String]()
    var imageArray = [String]()
    var pageIndex: Int = 0
    var imagesArray = [String]()

let urlString = "http://www.json-generator.com/api/json/get/cjpberBhKa?indent=2"

    override func viewDidLoad() {
        super.viewDidLoad()
        self.downloadJsonWithURL()
        collectionView.delegate = self
        collectionView.dataSource = self
        let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(swiped(gesture:)))
        swipeLeft.direction = .left
        self.imageView.addGestureRecognizer(swipeLeft)
        swipeLeft.cancelsTouchesInView = false
        let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(swiped(gesture:)))
        swipeRight.direction = .right
        self.imageView.addGestureRecognizer(swipeRight)
        swipeRight.cancelsTouchesInView = false
        imageView.isUserInteractionEnabled = true
        // Do any additional setup after loading the view.
    }
    func downloadJsonWithURL() {
        let url = NSURL(string: urlString)
        URLSession.shared.dataTask(with: (url as URL?)!, completionHandler: {(data, response, error) -> Void in
            if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? NSDictionary {
                print(jsonObj!.value(forKey: "Detail")!)
                if let detailsArray = jsonObj!.value(forKey: "Detail") as? NSArray {
                    if let detailDict = detailsArray[0] as? NSDictionary {
                        if let name = detailDict.value(forKey: "productName") {
                            self.productName.append(name as! String)
                        }
                        if let image1 = detailDict.value(forKey: "image1"){
                            self.imageArray.append(image1 as! String)
                        }
                        if let image2 = detailDict.value(forKey: "image2"){
                            self.imageArray.append(image2 as! String)
                        }
                        if let image3 = detailDict.value(forKey: "image3"){
                            self.imageArray.append(image3 as! String)
                        }
                        if let image4 = detailDict.value(forKey: "image4"){
                            self.imageArray.append(image4 as! String)
                        }
                        if let image5 = detailDict.value(forKey: "image5"){
                            self.imageArray.append(image5 as! String)
                        }
                        if let image6 = detailDict.value(forKey: "image6"){
                            self.imageArray.append(image6 as! String)
                        }
                        if let image7 = detailDict.value(forKey: "image7"){
                            self.imageArray.append(image7 as! String)
                        }
                        if let image8 = detailDict.value(forKey: "image8"){
                            self.imageArray.append(image8 as! String)
                        }
                        if let image9 = detailDict.value(forKey: "image9"){
                            self.imageArray.append(image9 as! String)
                        }
                        if let image10 = detailDict.value(forKey: "image10"){
                            self.imageArray.append(image10 as! String)
                        }
                        if let price = detailDict.value(forKey: "productPrice") {
                            self.productprice.append(price as! String)
                        }
                        if let description = detailDict.value(forKey: "productDes") {
                            self.productdescription = description as? String
                        }
                        if let image = detailDict.value(forKey: "img"){
                            self.imagesArray.append(image as! String)
                        }
                    }
                }
                OperationQueue.main.addOperation({
                    self.navigationBar.topItem?.title = self.productName[0]
                    self.textview.text = self.productdescription
                    self.priceLabel.text = self.productprice[0]
                    self.nameLabel.text = self.productName[0]
                    print(self.imageArray)
                    let imgURL = NSURL(string:self.imageArray[0])
                    let data = NSData(contentsOf: (imgURL as URL?)!)
                    self.imageView.image = UIImage(data: data! as Data)
                })
            }
        }).resume()
    }
    func swiped(gesture: UIGestureRecognizer) {
        if let swipeGesture = gesture as? UISwipeGestureRecognizer {
            switch swipeGesture.direction {
            case UISwipeGestureRecognizerDirection.right :
                if pageIndex == 0 {

                }else{
                    pageIndex -= 1
                }
                let imgURL = NSURL(string:self.imageArray[pageIndex])
                let data = NSData(contentsOf: (imgURL as URL?)!)
                self.imageView.image = UIImage(data: data! as Data)
                pageControl.numberOfPages = imageArray.count
                pageControl.currentPage = pageIndex
            case UISwipeGestureRecognizerDirection.left:
                if pageIndex >= imageArray.count-1{

                }else{
                    pageIndex += 1
                }
                let imgURL = NSURL(string:self.imageArray[pageIndex])
                let data = NSData(contentsOf: (imgURL as URL?)!)
                self.imageView.image = UIImage(data: data! as Data)
                pageControl.numberOfPages = imageArray.count
                pageControl.currentPage = pageIndex
            default:
                break
            }
        }
    }
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 1
    }
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return imagesArray.count
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell",for:indexPath) as! DetailsCell
        let arr = imagesArray[indexPath.row]
        let urls = NSURL(string: arr)
        let data = NSData (contentsOf: urls! as URL)
        cell.imageView.image = UIImage(data: data! as Data)
        cell.nameLabel.text = self.productName[indexPath.row]
        cell.priceLabel.text = self.productprice[indexPath.row]
        cell.layer.borderColor = UIColor.lightGray.cgColor
        cell.layer.borderWidth = 0.7
     return cell
    }

---

下载JSONWITHURL loaded后，您需要重新加载collectionview的数据。

从

web服务响应中获取所有
数据后，重新加载
集合视图
，如下所示

collectionView.reloadData()

你不久前用同样的代码发布了一个问题，甚至接受了一个答案。你在寻找答案吗？？？@Vamsi你现在展示的是什么？您可以提供图像。@bilal我试图在同一任务中实现图像视图，但无法在其上显示，这就是我发布EDI phone 7显示大小的原因我试图显示图像，但无法发布这是图像链接@Aircraft如何重新加载集合视图以及用于此的代码是什么？
func downloadJsonWithURL（）{let url=NSURL（string:urlString）URLSession.shared.dataTask（with:（url作为url？），completionHandler:{（数据，响应，错误）->如果let jsonObj=try？JSONSerialization.jsonObject（with:data！，options:.allowFragments）作为？NSDictionary{//您的代码}则无效DispatchQueue.main.async{//在此处更新您的UI//在此处重新加载collectionView数据collectionView.reloadData（）}）。resume（）}
它在ui上只有集合视图时工作，但我的页面是这样的，它不工作I.stack.imgur.com/QWYQr.pngI没有理解你说的。
它在ui上只有集合视图时工作
。那么你的集合视图在哪里I.stack.imgur.com/QWYQr.png你只需检查一下图片，我正在展示c描述下面的收集视图