如何在Swift上将照片显示为UICollectionView或资源网格

import UIKit

class PhotoCollectionViewCell: UICollectionViewCell {
    @IBOutlet weak var photoImageView: UIImageView!
}

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    
    @IBOutlet weak var collectionView: UICollectionView!
    
    let photos = ["photo1.jpg", "photo2.jpg", "photo3.jpg"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置collectionView的数据源和委托
        collectionView.dataSource = self
        collectionView.delegate = self
    }
    
    // MARK: - UICollectionViewDataSource
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return photos.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "PhotoCollectionViewCell", for: indexPath) as! PhotoCollectionViewCell
        
        // 设置照片数据
        let photoName = photos[indexPath.item]
        cell.photoImageView.image = UIImage(named: photoName)
        
        return cell
    }
    
    // MARK: - UICollectionViewDelegate
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        // 处理选中某个照片的事件
        let selectedPhoto = photos[indexPath.item]
        print("Selected photo: \(selectedPhoto)")
    }
}