Question

我想在单元格中使用 AVPlayerController 的实例。布局是collectionView。

播放器可以很好地处理包括约束在内的第一个视频。 第二次，约束无法实现。更糟糕的是，播放器没有播放。

有人会对我在这里想念的东西有任何想法吗？

这是下面的演示：

  class MediaPlayerCell: BaseCell {

    let statusBarHeight: CGFloat = 20
    let contentOffset: CGFloat = 50
    static let vgReuseIdentifier = "VGMediaPlayerCell"
    var toggleHeaderVisibility: Bool = false
    static var playerIsPlaying: Bool = false
    public weak var delegate: VGMediaPlayerCellDelegate?

    var waitingIndicator = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.whiteLarge)
    var containerView = UIView()
    var messageLabel = UILabel()

    var content: VGContent?
    let deviceOrientation = UIDevice.current.orientation

    //player settings
    var player: AVPlayer?
    var asset: AVAsset?
    var isReadyForDisplayObserver: NSKeyValueObservation?
    var avPlayerViewConroller = AVPlayerViewController()
    var needAutoPlay: Bool = false
    var isLoaded: Bool = false


func configurePlayer(with viewModel: VGMediaPlayerViewModel) {
        //hideErrorMessage()
        //avPlayerViewConroller = AVPlayerViewController()
        avPlayerViewConroller.videoGravity = AVLayerVideoGravity.resizeAspect

        insertSubview(avPlayerViewConroller.view, at: 0)
        avPlayerViewConroller.view.topAnchor.constraint(equalTo: topAnchor).isActive = true
        avPlayerViewConroller.view.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
        avPlayerViewConroller.view.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
        avPlayerViewConroller.view.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
        self.bringSubviewToFront(avPlayerViewConroller.view)

        updateUI(with: viewModel)
        guard let url = viewModel.url! as? URL else { return }
        asset = AVAsset(url: url)

        guard let asset = asset else {
            waitingStateActive(isActive: false)
            //showErrorMessage("La prévisualisation n'est pas disponible pour ce fichier")
            return
        }


        if !asset.isPlayable {
            DispatchQueue.main.async {
                self.waitingStateActive(isActive: false)
                //self.showErrorMessage("La prévisualisation n'est pas disponible pour ce fichier")
                return
            }
        }

        let item = AVPlayerItem(asset: asset)
        self.player = AVPlayer(playerItem: item)

        if #available(iOS 10.0, *) {
            self.player?.automaticallyWaitsToMinimizeStalling = false
        }

        DispatchQueue.main.async {
            self.avPlayerViewConroller.player = self.player
            if self.needAutoPlay {
                self.player?.play()
            }

            if self.content?.type == .audio && !asset.isPlayable {
                self.waitingStateActive(isActive: false)
            }
            self.isLoaded = true
        }
    }


    func setupConstraints() {
        //custom insets per device orientation
        // regular from for iphone 8 and downwards
        // custom frame for iphone X and upwards
        if UIDevice().userInterfaceIdiom == .phone {
            switch UIScreen.main.nativeBounds.height {
            //iPhone 5 or 5S or 5C, iPhone 6/6S/7/8, iPhone 6+/6S+/7+/8+
            case 1136,  1334, 1920, 2208:

                avPlayerViewConroller.view.frame = self.frame

            //iPhone X, Xs, iPhone Xs Max, iPhone Xr
            case 2436, 2688, 1792:
                if UIApplication.shared.statusBarOrientation.isPortrait {
                    avPlayerViewConroller.view.frame = self.frame.insetBy(dx: 0.0, dy: 60.0)
                } else {
                    avPlayerViewConroller.view.frame = self.frame.insetBy(dx: 30.0, dy: 20.0)
                }
            default: break
            }
        } else {
            //for the iPad
            avPlayerViewConroller.view.frame = self.frame
        }
        //Add observer on keypath rate to monitor player's playing status
        if self.toggleHeaderVisibility == true {
            if UIDevice().userInterfaceIdiom == .phone {
                switch UIScreen.main.nativeBounds.height {
                case 2436, 2688, 1792:
                    player?.addObserver(self, forKeyPath: "rate", options: [.old, .new], context: nil)
                default : break
                }
            }
        }

        //player?.addObserver(self, forKeyPath: "rate", options: [.old, .new], context: nil)
        self.translatesAutoresizingMaskIntoConstraints = true
        setNeedsLayout()
    }
}

感谢您的帮助！

AVPlayerViewController的约束不起作用

0 个答案: