image - 如何在详细视图中显示来自数组的不同照片（来自集合视图）

问题描述

在研究并尝试了各种代码之后，我终于在 Stack Exchange ( Link ) 上找到了一个帖子，这似乎帮助我实现了我的目标： 拥有一个包含 24 个项目（带有标签和图像的单元格）的 UICollectionView 以及当用户点击一个项目，一个特定的图像将显示在一个详细视图上（> 详细视图 = UIViewController 以模态方式呈现一个 segue。此时没有嵌入式 NavigationController，因为我不想要一个 NavBar）。

我根据我的情况调整了上述链接中的解决方案（当然不确定我是否做对了）。我没有收到任何与代码相关的错误。UICollectionView 加载，我可以点击一个项目并打开详细信息视图，但图像未显示在详细信息屏幕上。当我在覆盖函数处设置断点时... didSelectItemAt我意识到代码甚至没有被调用。

我已经尝试了两天来上班。我也尝试了各种替代选项，但由于我是 Swift 的初学者以及一般的开发，我就是想不通。

我错过了什么？

这是我的 ViewController 代码 （是的，可能有更好的方法来加载 doorImage 数组，但它可以工作，所以没关系）

class ViewController: UICollectionViewController {

let doorTitle = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]

let doorImage = [UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "xmasballcut"),
                 UIImage(named: "reddecocut"),]

override func viewDidLoad() {
    super.viewDidLoad()
   self.collectionView.delegate = self
   self.collectionView.dataSource = self
}

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

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCellDoor", for: indexPath) as! CollectionViewCellDoor
    cell.doorTitleLabel.text = doorTitle[indexPath.item]
    cell.doorImageView.image = doorImage[indexPath.item]
    return cell
 }

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let vc = self.storyboard?.instantiateViewController(withIdentifier: "DetailViewController") as! DetailViewController
    switch indexPath.item
    {
    case 0:
        vc.selectedImage = UIImage.init(named: "detail1")!
        performSegue(withIdentifier: "segueOpenDetail", sender: self)
        break;
    case 1:
        vc.selectedImage = UIImage.init(named: "detail2")!
        performSegue(withIdentifier: "segueOpenDetail", sender: self)
        break;
    case 2:
        vc.selectedImage = UIImage.init(named: "detail3")!
        performSegue(withIdentifier: "segueOpenDetail", sender: self)
        break;
    default:
        vc.selectedImage = UIImage.init(named: "detail1")!
        performSegue(withIdentifier: "segueOpenDetail", sender: self)
        break;
    } }
}

这是我的 DetailViewController 代码

class DetailViewController: UIViewController {

@IBOutlet weak var detailImage: UIImageView!
@IBOutlet weak var closeButton: UIButton!

var selectedImage: UIImage! = nil

override func viewDidLoad() {
    super.viewDidLoad()
    self.detailImage.image = selectedImage
}


@IBAction func dismissModalView(_ sender: UIButton) {
    dismiss(animated: true, completion: nil)
}  }

标签： imageuiviewcontrolleruicollectionviewswift4

image - 如何在详细视图中显示来自数组的不同照片（来自集合视图）

问题描述

解决方案

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