检测 AVPlayerViewController 是否正在播放视频或缓冲并向播放器添加叠加层

Question

1. 我必须检测视频是处于播放模式还是缓冲模式。我正在从 URL 加载视频。我已经尝试了下面的代码，一旦视频开始播放，我就可以进行跟踪，但不能在处于缓冲状态时进行跟踪。
2. 另外，我想在我的播放器中添加一个叠加视图。我试图在 AVPlayer 中添加叠加层，但是在全屏模式下叠加层消失了。

需要一些建议。提前致谢。下面是我的代码：

    let playerAV = AVPlayerViewController()
    var player = AVPlayer()
    player = AVPlayer(URL: url)
    print(url)
    playerAV.player = player
    playerAV.view.frame = CGRectMake(0, 0,  self.videoView.frame.width,  self.videoView.frame.height)
    self.addChildViewController(playerAV)
    self.videoView.addSubview(playerAV.view)
    playerAV.didMoveToParentViewController(self)
    playerAV.player?.play()
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ChannelDetailViewController.notificationObserver(_:)), name:AVPlayerItemDidPlayToEndTimeNotification , object: player.currentItem)
        _ = UIDevice.beginGeneratingDeviceOrientationNotifications
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ChannelDetailViewController.deviceOrientationDidChange(_:)) , name:
        UIDeviceOrientationDidChangeNotification, object: nil)
    player.addObserver(self, forKeyPath: "rate", options: NSKeyValueObservingOptions.New, context: nil)
  player.addPeriodicTimeObserverForInterval(CMTime(value: 1, timescale: 3), queue: dispatch_get_main_queue()) { [weak self] time in
    self?.handlePlayerStatus(time)
  }

  func handlePlayerStatus(time: CMTime) {
     if player.status == .ReadyToPlay {
     // buffering is finished, the player is ready to play
     print("playing")
  }
  if player.status == .Unknown{
    print("Buffering")
  }
 }

 override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
    if keyPath == "rate" {
        if let rate = change?[NSKeyValueChangeNewKey] as? Float {
          if player.currentItem!.status == AVPlayerItemStatus.ReadyToPlay{
            if rate != 0 && player.error == nil {

              print("normal playback")
            }
            else{
              print("playback stopped")
            }

          }else if player.currentItem?.status == AVPlayerItemStatus.Unknown{
            print("test")
          }
        }
    }
    print("you are here")
}

检查这里的项目

Answer 1

1. 检查我的答案：/sf/answers/2720717051/，这向您展示了如何检查播放器是否正在加载缓冲区，要检查它是否准备好播放，您必须检查player.currentItem.status和player.status

2. 要向 AVPlayer 添加覆盖层，我建议在UIViewAVPlayer 上方使用一个覆盖层。