Swift:在UICollectionViewCell上推送视图控制器

import UIKit

class MyCollectionViewCell: UICollectionViewCell {
    var viewControllerToPush: UIViewController?
    
    @IBAction func pushViewController(_ sender: UIButton) {
        if let viewController = viewControllerToPush {
            if let navigationController = UIApplication.shared.keyWindow?.rootViewController as? UINavigationController {
                navigationController.pushViewController(viewController, animated: true)
            }
        }
    }
}

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    @IBOutlet weak var collectionView: UICollectionView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        collectionView.dataSource = self
        collectionView.delegate = self
    }
    
    // UICollectionViewDataSource methods
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "MyCollectionViewCell", for: indexPath) as! MyCollectionViewCell
        
        // 设置要推送的视图控制器
        let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "DetailViewController") as! DetailViewController
        cell.viewControllerToPush = viewController
        
        return cell
    }
    
    // UICollectionViewDelegate methods
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        // 处理选中项
    }
}