Swift AVPlayer视频不支持'；t在设备旋转后调整大小

我试图使AVPlayer视频在设备旋转后始终全屏显示。这是我的完整代码。我不明白为什么视频没有调整大小。即使我使用像layerClass这样的子类。设备旋转后，视频视图被剪切，我看不到完整的视频。如果有人有主意。提前谢谢

import UIKit
import AVKit
import AVFoundation

class ViewController: UIViewController {

    var player: AVPlayer?
    var videoView: VideoContainerView!
    var playerLayer: AVPlayerLayer!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.videoView = VideoContainerView()
        self.videoView.frame = self.view.bounds
        self.videoView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

        let path = Bundle.main.path(forResource: "GAVIDEO", ofType: "mp4")
        self.player = AVPlayer(url: NSURL(fileURLWithPath: path!) as URL)
        self.player?.isMuted = true

        self.playerLayer = AVPlayerLayer(player: self.player)
        self.playerLayer.frame = self.videoView.bounds
        self.playerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill

        self.videoView.layer.addSublayer(playerLayer)

        self.videoView.layer.masksToBounds = true

        self.view.addSubview(self.videoView)

        self.player?.play()
    }

    override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
        super.viewWillTransition(to: size, with: coordinator)

        self.videoView.frame = self.view.bounds
        self.playerLayer.frame = self.videoView.bounds

    }

}

class VideoContainerView: UIView {

    override class var layerClass: AnyClass {
        get {
            return AVPlayerLayer.self
        }
    }

    override func layoutSublayers(of layer: CALayer) {
        super.layoutSublayers(of: layer)
        guard layer == self.layer else {
            return
        }
        layer.frame = self.bounds
    }

}

---

尝试使用

视图中的
大小
，这样做：

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
   super.viewWillTransition(to: size, with: coordinator)
    coordinator.animate(alongsideTransition: { (context) in
    }) { (context) in
        self.videoView.frame.size = size
        self.playerLayer.frame.size = size
    }
}

以下内容对我很有用，其中
vc
是对
avplayervewcontroller
的引用，其中包含要调整大小的
AVPlayer
视图

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
   super.viewWillTransition(to: size, with: coordinator)
   coordinator.animate(alongsideTransition: nil) { (context) in
      if size.height <= vc.view.bounds.height || size.width <= vc.view.bounds.width {
         vc.videoGravity = .resizeAspect
      }
      else {
         vc.videoGravity = .resizeAspectFill
      }
   }
}

override func viewWillTransition（到大小：CGSize，带协调器：UIViewControllerTransitionCoordinator）{
super.viewWillTransition（到：大小，带：协调器）
协调器。在中设置动画（alongsideTransition:nil）{（上下文）
如果size.height谢谢！似乎在后台工作。是的，因为当我旋转视频播放器时，会出现一个白色层…与新更新的代码一起工作非常好。非常感谢！问题是
viewWillTransition
太早了。想想看，View会转换。因此
边界
不是您以后想要的边界r过渡。