小编123*_*123的帖子

我使用了以下代码:

NotificationCenter.default.addObserver(self,selector: #selector(ViewController.restartVideoFromBeginning),name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,object: nil)

@objc func restartVideoFromBeginning()  {


    let seconds : Int64 = 0
    let preferredTimeScale : Int32 = 1
    let seekTime : CMTime = CMTimeMake(seconds, preferredTimeScale)

    player!.seek(to: seekTime)

    player!.play()

}

但是里面的玩家restartVideoFromBeginning有零值,有谁知道为什么？