如何检查我的AVPlayer是否正在缓冲？ [英] How can I check if my AVPlayer is buffering?

问题描述

我想检测我的AVPlayer是否正在缓冲当前位置，以便我可以显示加载器或其他东西。但我似乎无法在AVPlayer的文档中找到任何内容。

I want to detect if my AVPlayer is buffering for the current location, so that I can show a loader or something. But I can't seem to find anything in the documentation for AVPlayer.

推荐答案

您可以观察<$ c的值$ c> player.currentItem ：

playerItem.addObserver(self, forKeyPath: "playbackBufferEmpty", options: .New, context: nil)
playerItem.addObserver(self, forKeyPath: "playbackLikelyToKeepUp", options: .New, context: nil)
playerItem.addObserver(self, forKeyPath: "playbackBufferFull", options: .New, context: nil)

然后

override public func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
    if object is AVPlayerItem {
        switch keyPath {
            case "playbackBufferEmpty":
               // Show loader

            case "playbackLikelyToKeepUp":
                // Hide loader

            case "playbackBufferFull":
                // Hide loader
        }
    }
}

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