我有从url加载视频并将播放器放在avplayerview控制器中的avplayer,但我不想缓冲和下载视频,直到用户按下播放按钮。我该怎么做?
var player: AVPlayer = AVPlayer(URL: nsurl)
var newVideoChunk: AVPlayerViewController = AVPlayerViewController()
newVideoChunk.player = player
最佳答案
使用来自nsurl的avplayer的avplayerview控制器?
您需要设置视频资源,并使用基于nsurl的资源创建一个playeritem。然后,您需要向该playeritem添加一个观察者(立即):
self.playerItem?.addObserver(self, forKeyPath: "status", options: NSKeyValueObservingOptions.New, context: Constants.AVPlayerStatusObservationContext)
从键值观察器例程中,可以捕获上下文并调用外部函数:
override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
//
if context == Constants.AVPlayerStatusObservationContext {
if (keyPath! == "status") {
if (player!.status == AVPlayerStatus.ReadyToPlay) {
print("ready")
readyToPlay()
} else if (player!.status == AVPlayerStatus.Failed) {
// something went wrong. player.error should contain some information
} else if (player!.status == AVPlayerStatus.Unknown) {
print("unknown")
}
}
}
}
如果只想在单击按钮时处理缓冲和下载,请确保只在按钮操作方法中添加观察者。这对于文件URL和联机URL同样有效。
请查看我的示例要点了解更多信息:
VideoPlayerViewController.swift