显示未添加的子视图的Swift CollectionViewCell

import UIKit

class CustomCollectionViewCell: UICollectionViewCell {
    // 添加需要显示的子视图
    let titleLabel = UILabel()
    let imageView = UIImageView()

    override init(frame: CGRect) {
        super.init(frame: frame)
        
        // 配置子视图的布局和样式
        titleLabel.translatesAutoresizingMaskIntoConstraints = false
        imageView.translatesAutoresizingMaskIntoConstraints = false
        
        contentView.addSubview(titleLabel)
        contentView.addSubview(imageView)
        
        NSLayoutConstraint.activate([
            titleLabel.topAnchor.constraint(equalTo: contentView.topAnchor),
            titleLabel.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
            titleLabel.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
            
            imageView.topAnchor.constraint(equalTo: titleLabel.bottomAnchor, constant: 8),
            imageView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
            imageView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
            imageView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor)
        ])
        
        titleLabel.textAlignment = .center
        titleLabel.font = UIFont.boldSystemFont(ofSize: 16)
        
        imageView.contentMode = .scaleAspectFit
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // 配置子视图的数据
    func configure(with title: String, image: UIImage) {
        titleLabel.text = title
        imageView.image = image
    }
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CustomCell", for: indexPath) as! CustomCollectionViewCell
    
    // 根据数据源设置子视图的数据
    let title = dataSource[indexPath.row].title
    let image = dataSource[indexPath.row].image
    cell.configure(with: title, image: image)
    
    return cell
}