swift - 抓取视频url WKWebView

Question

嗨，我很快就从 WKWebView 打开了一个视频，它会自动打开这个视频页面，无论如何我都可以捕获视频链接并使用这个视频的 url 吗？

Answer 1

您应该实现委托(delegate) WKNavigationDelegate 并定义函数 decidePolicyForNavigationAction，例如:

class ViewController: UIViewController, WKNavigationDelegate {
...

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    webView = WKWebView(frame: CGRect(x: 0, y: 50, width: 100, height: 100))
    webView.navigationDelegate = self
    webView.loadRequest(NSURLRequest(URL: NSURL(string: "https://www.example.com")!))
    view.addSubview(webView)
}

func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: (WKNavigationActionPolicy) -> Void) {
    let path = navigationAction.request.URL?.absoluteString
    if let path = path {
        if path.rangeOfString("mp4") != nil {
            // This is video link, don't let iOS open video
            decisionHandler(.Cancel)
            print("Process video \(path)")
            return
        }
    }
    // Any other link should be handled by WKWebView
    decisionHandler(.Allow)
}

检测视频链接的路径中是否有mp4或者你希望检测的其他扩展名或路径，然后自行处理。