小编Kho*_* Le的帖子

我正在开发视频共享 iOS 应用程序并Firebase5用作后端。它允许用户可以选择视频并将其发送到存储。当我尝试时，视频无法推送到database服务器。下面是我的代码：

static func uploadVideoToFirebaseStorage(videoUrl: URL, onSuccess: @escaping (_ videoUrl: String) -> Void) {
    let videoIdString = NSUUID().uuidString
    //Config.STORAGE_ROOT_REF is var STORAGE_ROOT_REF = "gs://****-cdc3c.appspot.com"
    let storageRef = Storage.storage().reference(forURL: Config.STORAGE_ROOT_REF).child("posts").child(videoIdString)
    storageRef.putFile(from: videoUrl, metadata: nil) { (metadata, error) in
        if error != nil {
            ProgressHUD.showError(error!.localizedDescription)
            return
        }
    }
    storageRef.downloadURL(completion: { (url, error) in
        if let error = error {
            return
        }else {
            let videoUrl = url!.absoluteString
            onSuccess(videoUrl)
        }
    })
}      

我正在使用AVQueuePlayer播放远程音频文件列表。我想默认实现重复所有。

我的方法是，我正在观察AVPlayerItemDidPlayToEndTime通知，并在播放完毕后将 playerItem 添加到队列的后面。

在nextAudio(notification: Notification)不运行在所有。需要这方面的帮助，或者更好的方式来实现无限游戏。

func playAudio(_ items: [AVPlayerItem]) {

    let avPlayerVC = AVPlayerViewController()
    let player = AVQueuePlayer(items: items)
    player.actionAtItemEnd = .pause
    avPlayerVC.player = player

    for item in items {
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(FilesViewController.nextAudio(notification:)),
                                               name: .AVPlayerItemDidPlayToEndTime, object: item)
    }

    present(avPlayerVC, animated: true) {
        self.player.play()
    }
}

@objc func nextAudio(notification: Notification) {
    debugPrint("nextAudio was called")
    guard player != nil else { return }
    debugPrint("AVPlayerItemDidPlayToEndTime notif info  \(notification.userInfo)")
    if let currentItem = notification.userInfo!["object"] as? AVPlayerItem { …