Ios 当从收藏视图切换视频时，Swift player冻结，但音频仍在后台工作

下面是我的意思的快速视频：

我有一个收藏视图，当我点击任何第一个视频播放它显示完美。当我单击“上一步”关闭播放器/视图以播放不同的视频时，音频在后台工作，但播放视频时视频显示似乎冻结

以下是UICollectionView的相关代码：

class HomeController: UICollectionViewController, UICollectionViewDelegateFlowLayout {

       override func viewDidLoad() {
    super.viewDidLoad()
         collectionView?.register(HomePostCell.self, forCellWithReuseIdentifier: cellId)

    collectionView?.register(HomeControllerHeader.self, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "HomeControllerHeaderId")
   }

override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return posts.count
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return 1
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return 1
}

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! HomePostCell
    //        self.hpc = cell
    cell.post = posts[indexPath.item]
    return cell
} 

var avPlayerViewController = VideoPlayerViewController()

var avPlayer = AVPlayer()
var playerLayer: AVPlayerLayer!

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let links = posts[indexPath.row]
    guard let url = NSURL(string: links.videoUrl) else { return }
    var player = avPlayerViewController.player
    player = AVPlayer(url: url as URL)
    let playerItem = AVPlayerItem(url: url as URL)
    avPlayer.replaceCurrentItem(with: playerItem)
    let playerController = avPlayerViewController
    playerController.player = player

self.navigationController?.pushViewController(playerController, animated: true)
        playerController.player.play()

      }
}

以下是我的avPlayer视图控制器类的相关代码：

class VideoPlayerViewController: UIViewController {
    var player: AVPlayer!
    var playerLayer: AVPlayerLayer!

    let videoView: UIView = {
       let vidView = UIView()
       return vidView
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        playerLayer = AVPlayerLayer(player: player)

        videoView.layer.addSublayer(playerLayer)

        view.addSubview(videoView)

        videoView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(true)
        playerLayer.frame = view.bounds
        self.view.layer.addSublayer(playerLayer)
        player!.play()
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        playerLayer.frame = view.bounds
    }

    override func viewDidDisappear(_ animated: Bool) {
        player!.pause()
        player = nil
        playerLayer.removeFromSuperlayer()
    }
}

---

如果您还有任何问题，请告诉我。

已解决。问题是我打电话给播放机让它显示一次视频。每次我尝试删除子层并播放新视频时，视频播放器都会冻结，因为播放器层只加载一次，而当我尝试播放新播放器层时，视频播放器不会冻结，因为它需要再次加载。每次显示视图控制器时，我都使用ViewDidEmbeen加载内容

class VideoPlayerViewController: UIViewController {


var hc: HomeController!
var player: AVPlayer!
var playerLayer: AVPlayerLayer!

let videoView: UIView = {
   let vidView = UIView()
   return vidView
}()

override func viewDidLoad() {
    super.viewDidLoad()
    view.backgroundColor = .black
}

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(true)
    playerLayer = AVPlayerLayer(player: player)
    view.addSubview(videoView)
    videoView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
    self.view.layer.addSublayer(playerLayer)
    playerLayer.frame = view.bounds
    player!.play()
}

override func viewDidDisappear(_ animated: Bool) {
    player!.pause()
    player = nil
    playerLayer.removeFromSuperlayer()
}

}

---

“我有一个集合视图”您的代码中没有一行这样建议。@ElTomato好的，我添加了集合视图类HII我正在使用collectionviewcell面对相同的问题有任何帮助吗？