将图像添加到UICollection标头Swift

// HeaderCollectionReusableView.swift

import UIKit

class HeaderCollectionReusableView: UICollectionReusableView {
    // 图像视图
    let headerImageView: UIImageView = {
        let imageView = UIImageView()
        imageView.contentMode = .scaleAspectFit
        return imageView
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        // 添加图像视图到标头视图
        addSubview(headerImageView)
        
        // 设置图像视图的约束
        headerImageView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            headerImageView.topAnchor.constraint(equalTo: topAnchor),
            headerImageView.leadingAnchor.constraint(equalTo: leadingAnchor),
            headerImageView.trailingAnchor.constraint(equalTo: trailingAnchor),
            headerImageView.bottomAnchor.constraint(equalTo: bottomAnchor)
        ])
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

// ViewController.swift

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    // 集合视图
    let collectionView: UICollectionView = {
        let layout = UICollectionViewFlowLayout()
        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
        // 设置其他集合视图属性
        return collectionView
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置集合视图的数据源和代理
        collectionView.dataSource = self
        collectionView.delegate = self
        
        // 注册标头视图的类
        collectionView.register(HeaderCollectionReusableView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "header")
        
        // 添加集合视图到视图层级中
        view.addSubview(collectionView)
        
        // 设置集合视图的约束
        collectionView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
            collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
    }
    
    // 返回标头视图
    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        if kind == UICollectionView.elementKindSectionHeader {
            let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "header", for: indexPath) as! HeaderCollectionReusableView
            
            // 设置标头视图的图像
            headerView.headerImageView.image = UIImage(named: "header_image")
            
            return headerView
        }
        
        return UICollectionReusableView()
    }
    
    // 其他集合视图数据源和代理方法...
}