Question

如何使用AVPlayer？

在后台设置正在播放音频的标题和图像

到目前为止我的代码：

  let path: String = String(format: "pathtoaudio")
    let aPlayerItem: AVPlayerItem = AVPlayerItem(URL: NSURL(string: path)!)
    let anAudioStreamer: AVPlayer = AVPlayer(playerItem: aPlayerItem)
    player = anAudioStreamer
    let playerController = AVPlayerViewController()
    playerController.player = player
    self.addChildViewController(playerController)
    self.view.addSubview(playerController.view)
    playerController.view.frame = self.view.frame
    player.addObserver(self, forKeyPath: "status", options: NSKeyValueObservingOptions.New, context: nil)
    let nowPlayingInfo = [MPMediaItemPropertyArtist : "Artist!",  MPMediaItemPropertyTitle : "Title!", MPMediaItemPropertyArtwork : MPMediaItemArtwork(image: UIImage(named: "nour.jpg")!)]
    MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = nowPlayingInfo
    UIApplication.sharedApplication().beginReceivingRemoteControlEvents()

我正在尝试使用MPNowPlayingInfoCenter，但我没有在锁定屏幕上看到这些信息。

Answer 1

您的标题和艺术家键看起来是正确的，但要设置相册图片，您需要使用MPMediaItemArtwork对象：

let nowPlayingInfo = [MPMediaItemPropertyArtist : "Artist!",  MPMediaItemPropertyTitle : "Title!", MPMediaItemPropertyArtwork : MPMediaItemArtwork(image: UIImage(...))]
MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = nowPlayingInfo

您可能还需要显式订阅远程控制事件：

UIApplication.sharedApplication().beginReceivingRemoteControlEvents()

设置标题和图像，以便在后台播放音频

1 个答案: