在视图控制器加载后加载集合视图的图像视图

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    
    var collectionView: UICollectionView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建集合视图布局
        let layout = UICollectionViewFlowLayout()
        layout.itemSize = CGSize(width: 100, height: 100)
        
        // 创建集合视图
        collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
        collectionView.dataSource = self
        collectionView.delegate = self
        collectionView.register(ImageCell.self, forCellWithReuseIdentifier: "ImageCell")
        view.addSubview(collectionView)
    }
    
    // 数据源方法：返回单元格数量
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10 // 假设有10张图片
    }
    
    // 数据源方法：返回单元格
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ImageCell", for: indexPath) as! ImageCell
        cell.imageView.image = UIImage(named: "image\(indexPath.item + 1)") // 假设图片名为image1, image2, ...
        return cell
    }
}

class ImageCell: UICollectionViewCell {
    let imageView: UIImageView = {
        let imageView = UIImageView()
        imageView.contentMode = .scaleAspectFit
        imageView.frame = contentView.bounds
        contentView.addSubview(imageView)
        return imageView
    }()
}