渐进式下载与SWIFT 3

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我试图实现身份认证和回放：渐进式下载与SWIFT 3

与认证渐进式下载
应该可以作为数据块玩自带（urlSession（_会议：URLSession，dataTask：URLSessionDataTask，didReceive数据：数据））

我试过至今：

试图与AVAudioPlayer(data: tempData as Data)，通过在URL会话接收到的数据数据添加到TempData。但玩家播放第一组数据并停止。
综合使用AVAsset

func initializePlayer() { 
     //audio session for handling interuptions - Done Appdelegate 
     /* 
     1. Create Asset (Asset represent a single media), AVAsset ->  AVAssetTrack 
     2. Resource properties like metadata, duration etc are loaded from asset, but if taken syncrn will block so use async 
     */ 

}

 let audioPath = Bundle.main.path(forResource: "big_buck_bunny", ofType: "mp4") 
     let resourceUrl = URL(fileURLWithPath: audioPath!) 
     let asset = AVAsset(url: resourceUrl) 

     let playableKey = "playable" 


     // Load the "playable" property 

     asset.loadValuesAsynchronously(forKeys: [playableKey]) { [unowned self] in 

      var error: NSError? = nil 

      let status = asset.statusOfValue(forKey: playableKey, error: &error) 

      switch status { 

      case .loaded: 
       debugPrint("Sucessfuly loaded") 
       self.playerItem = AVPlayerItem(asset: asset) 
       self.playerItem?.addObserver(self, forKeyPath: #keyPath(AVPlayerItem.status), options: [.old, .new], context: &audioPlayerInterfaceViewControllerKVOContext) 
       self.playerItem?.addObserver(self, forKeyPath: #keyPath(AVPlayerItem.duration), options: [.new, .initial], context: &audioPlayerInterfaceViewControllerKVOContext) 
       self.player = AVPlayer(playerItem: self.playerItem) 
       let interval = CMTimeMake(1, 1) 
       self.timeObserveToken = self.player.addPeriodicTimeObserver(forInterval: interval, queue: DispatchQueue.main) { [unowned self] time in 
        let timeElapsed = Float(CMTimeGetSeconds(time)) 
        UIView.animate(withDuration: 1.5, animations: { 
         self.durationSlider.setValue(Float(timeElapsed), animated: true) 

        }) 
        self.startTimeLabel.text = self.createTimeString(time: timeElapsed) 
       } 

       break 

       // Sucessfully loaded. Continue processing. 

      case .failed: 
       self.showErrorAlert(errorString: "Failed to load") 
       debugPrint("failed") 
       break 

       // Handle error 

      case .cancelled: 
       self.showErrorAlert(errorString: "Failed to load") 
       debugPrint("Cancelled") 
       break 

       // Terminate processing 

      default: 
       debugPrint("Error occured") 
       self.showErrorAlert(errorString: "Failed to load") 
       break 

       // Handle all other cases 

      } 

     } 
    }

成功地扮演了本地文件。但是，我们如何将数据部分追加到AVAsset中，以便播放整个数据？

来源

2017-01-22 jobsjobs001

AVAudioPlayer不适合从网络流式传输音频。您需要阅读音频文件流服务：https://developer.apple.com/reference/audiotoolbox/1669809-audio_file_stream_services

来源

2017-01-23 13:12:28

谢谢，最后我们得到了流式url。所以现在使用带有URL选项的AVPlayer – jobsjobs001

那么......现在一切都在为你工作？我对你的评论感到困惑。 –

最初我的客户要求是 1.从认证的URL下载文件，当收到一小块数据时，它需要播放。（非流式URL），但它似乎并没有很好地工作。因此创建了一个具有流式传输功能的URL和另一个用于下载的URL。在AVPlayer的URL帮助下，问题得到了解决。谢谢 – jobsjobs001

渐进式下载与SWIFT 3

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