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我遇到了问题AVPlayer，我正在使用 Parse SDK 来存储用户文件，并且我想获取一个电影文件 (.mp4) 并使用AVPlayer. 直接使用 Parse 文件 url 有问题，所以我尝试了一种不同的方法：

// First, I load the file from the video url
// `name` is the file name fetched from Parse
URLSession.shared.dataTask(with: videoURL) { data, response, error in
    DispatchQueue.main.async {
        do {
            // I will store locally the file to be read by AVPlayer afterwards
            let filepath = FileManager.default.temporaryDirectory.appendingPathComponent(name)
            try data?.write(to: filepath, options: .atomicWrite)
            // I create an AVPlayerItem from the local url
            let playerItem = AVPlayerItem(url: filepath as URL)
            let player = AVPlayer(playerItem: playerItem)                        
            let playerViewController = AVPlayerViewController()
            playerViewController.player = player
            self.viewController?.present(playerViewController, animated: true) {
                playerViewController.player?.play()
            }
        } catch {
            print(error)
        }                        
    }          
}.resume()

这适用于模拟器，但在使用真实设备时我最终没有播放视频。

任何想法？

谢谢您的帮助

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