[英]AVPlayer with playback controls of avplayerviewcontroller
[英]AVPlayerViewController with AVPlayer from NSURL
我有AVPlayer从URL加载视频并将播放器放入AVPlayerViewController但我不想缓冲和下载视频,直到用户按下播放按钮。 我该怎么办?
var player: AVPlayer = AVPlayer(URL: nsurl)
var newVideoChunk: AVPlayerViewController = AVPlayerViewController()
newVideoChunk.player = player
来自NSURL的AVPlayer AVPlayerViewController?
您需要设置视频资源并使用基于NSURL的资产创建playerItem。 然后你需要向该playerItem添加一个观察者(立即):
self.playerItem?.addObserver(self, forKeyPath: "status", options: NSKeyValueObservingOptions.New, context: Constants.AVPlayerStatusObservationContext)
在键值观察器例程中,您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")
}
}
}
}
如果您只想在单击按钮时处理缓冲和下载,请确保仅在按钮操作方法中添加观察者。 这与将文件URL作为在线URL一样有效。
请查看我的示例要点以获取更多信息:
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