如何检测AVplayer并从WKWebView获取当前视频的URL？

Question

我正在使用下面的代码从UIWebView提取URL ：它工作正常，但是，用于WKWebView的相同代码不再起作用。谁能帮我？在WKWebView中播放的视频不是全屏播放，而是Inlineplacyback。

我的代码是：

 NotificationCenter.default.addObserver(self, selector: #selector(self.playerItemBecameCurrent(_:)), name: NSNotification.Name("AVPlayerItemBecameCurrentNotification"), object: nil)

 @objc func playerItemBecameCurrent(_ sender : NSNotification){
    let playerItem: AVPlayerItem? = sender.object as? AVPlayerItem
    if playerItem == nil {
        print("player item nil")
        return
    }
    // Break down the AVPlayerItem to get to the path
    let asset = playerItem?.asset as? AVURLAsset
    let url: URL? = asset?.url
    let path = url?.absoluteString

    print(path!,"video url")
}

回应网址：

https://r2---sn-po4g5uxa-5hql.googlevideo.com/videoplayback?txp=5531432&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Crypto%2Cmime%2Cmm 2Cms％2Cmv％2Cpcm2％2Cpl％2Cratebypass％2Crequiressl％2Csource％2Cexpire＆IP = 103.37.181.55＆ratebypass = YES＆ID =邻AM9UWIaxopyYZX4gikGuswG8EMi3dhH_PPBMIqY5cbXj＆到期= 1554400796＆amp; C = MWEB＆fvip = 4＆initcwndbps = 481250＆ipbits = 0＆MIME =视频％2Fmp4＆DUR = 60.093＆LMT = 1554142002789460＆键= yt6＆MT = 1554379078＆ITAG = 18源= YouTube和GIR = YES＆requiressl =是＆签名= 6C68366FC249958BB8E95A5D88074FF8BCB99745.DA113E66DD0B46863BAE52DAA3CAB31FD141F0E5＆CLEN = 2708520＆毫米= 31％2C29＆MN = SN-po4g5uxa-5hql％2Csn-cvh7knek＆EI = vPGlXPOWHIWD8QOO1KBo＆MS = AU％2Crdu＆PCM2 =否PL = 24＆MV = M＆CPN = I9d32bNmeq3kf0jn＆cver = 2.20190403＆ptk = youtube_none＆pltype = contentugc

它是视频URL，而不是网页URL，所以请帮助我。谢谢。

Answer 1

这是一种破解，但是我找到了实现此目标的唯一方法。

首先将自己设置为WKWebView导航委托：

self.webView?.navigationDelegate = self

现在听所有导航更改，并保存请求的URL：

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        if let urlStr = navigationAction.request.url?.absoluteString {
            //Save presented URL
            //Full path can be accessed via self.webview.url
        }

        decisionHandler(.allow)
    }

现在，您只需要知道新屏幕何时可见，并使用您保存的URL（即可知道新可见屏幕的视频URL）。

您可以通过侦听UIWindowDidBecomeVisibleNotification通知来做到这一点：

NotificationCenter.default.addObserver(self, selector: #selector(windowDidBecomeVisibleNotification(notif:)), name: NSNotification.Name("UIWindowDidBecomeVisibleNotification"), object: nil)

然后检查导航窗口是否不是您的窗口，这意味着确实打开了一个新屏幕：

@objc func windowDidBecomeVisibleNotification(notif: Notification) {
        if let isWindow = notif.object as? UIWindow {
            if (isWindow !== self.view.window) {
            print("New window did open, check what is the currect URL")
            }
        }
    }

Answer 2

您可以尝试在此处所示的内容中注入JS WKWebView：https ://paulofierro.com/blog/2015/10/12/listening-for-video-playback-within-a-wkwebview