问题循环视频不间断| Swift

import AVFoundation
import AVKit

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

    override func viewDidLoad() {
        super.viewDidLoad()

        // 视频文件路径
        let videoURL = Bundle.main.url(forResource: "video", withExtension: "mp4")!

        // 创建AVPlayer对象
        player = AVPlayer(url: videoURL)

        // 创建AVPlayerLayer对象
        playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = view.bounds
        view.layer.addSublayer(playerLayer)

        // 设置循环播放
        player.actionAtItemEnd = .none
        NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidReachEnd), name: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)
    }

    @objc func playerItemDidReachEnd(notification: NSNotification) {
        // 重新播放视频
        player.seek(to: CMTime.zero)
        player.play()
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        // 开始播放视频
        player.play()
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)

        // 停止播放视频
        player.pause()
    }
}