对所有当前播放的视频执行一个 AVPlayer 的 AVPlayerItemDidPlayToEndTime 操作

Question

问题：在有播放器的 collectionview 单元格中

如果我同时播放两个视频并寻找第一个视频结束然后 AVPlayerItemDidPlayToEndTime 触发两次并且两个视频都重新启动

在集合视图单元格中我有

override func awakeFromNib() {
        NotificationCenter.default.addObserver(forName: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: player?.currentItem, queue: .main, using: {[weak self]  (notification) in
            if self?.player != nil {
                self?.player?.seek(to: kCMTimeZero)
                self?.player?.play()
            }
        })
   }

和一个播放视频的播放按钮操作。
在单元格中，我有滑块要查找。

任何帮助将不胜感激

Answer 1

注册通知时，请确保 player 和 player?.currentItem 不等于 nil。对我来说，似乎其中一个是零，你基本上订阅了所有 .AVPlayerItemDidPlayToEndTime 通知（因为 object 是零）。

为避免这种情况，请在分配 AVAsset 给玩家后立即订阅通知。

Answer 2

Swift 5.1

将项目作为您的对象传递：

// Stored property
let player = AVPlayer(url: videoUrl)

// When you are adding your video layer
let playerLayer = AVPlayerLayer(player: player)
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlaying), name: .AVPlayerItemDidPlayToEndTime, object: player.currentItem)

// add layer to view

然后当您收到该通知时，您可以通过以下方式获取 currentItem:

// Grab the item from the notification object and ensure its the same item as the current players item
if let item = notification.object as? AVPlayerItem,
    let currentItem = player.currentItem,
    item == currentItem {

    NotificationCenter.default.removeObserver(self, name: .AVPlayerItemDidPlayToEndTime, object: nil)

    // remove player from view or do whatever you need to do here
}

对所有当前播放的视频执行一个 AVPlayer 的 AVPlayerItemDidPlayToEndTime 操作

One AVPlayer's AVPlayerItemDidPlayToEndTime action executed for all Currently playing videos

ios

swift

avplayer