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AVPlayerの再生状態をKVOで監視する

More than 3 years have passed since last update.

動画が外部要因(バックグランド移動)によって停止されたりなんだりしたりした時にキー監視をする機会があったので
また、動画が再生されているかどうかは rate で判断されているとのこと

player.addObserver(self, forKeyPath: "rate", options: .New, context: nil)

まずは、KVOを設定

override func observeValueForKeyPath(keyPath: String?,
                                         ofObject object: AnyObject?,
                                                  change: [String : AnyObject]?,
                                                  context: UnsafeMutablePointer<Void>) {
        if keyPath == "rate" {
            if player?.rate = 0.0 {
                print("Pause")
            } else if player.?rate = 1.0 {
                print("Play")
            } else {
                print("Unknown")
            }
        }
    }

あとはViewControllerから脱出するときにKVOを削除する

player.removeObserver(self, forKeyPath: "rate")
nnsnodnb
いいか?Pythonだけを信じろ
https://nnsnodnb.hatenablog.jp
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