Question

我尝试做的只是在WKWebView我使用完成加载和抓取页面后才执行操作。

这里是webView的代码：

    let webView = WKWebView()

    let url = URL(string: "https://web.spaggiari.eu/home/app/default/menu_webinfoschool_genitori.php?custcode=")!
        let request = URLRequest(url: url)
        webView.load(request)

我想要做的是将按钮显示为＆＃34; Connect＆＃34;只有在进程捕获后（该特定进程，而不是每次webView完成加载时）。现在我使用DispatchQueue等待几秒钟，希望页面及时加载。

 DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(4)) { 
            UIView.animate(withDuration: 0.8, animations: {
                self.registerButton.alpha = 1
                self.registerButton.isEnabled = true
            })
            UIView.animate(withDuration: 0.8, delay: 0.4, animations: {
                self.blurButton.alpha = 1
            })
        }

我正在使用Xcode和Swift3

Answer 1

此代码表示该页面已满载，这可能对您有所帮助

func webpageFullyLoaded(_ str: String) {


    if (str == "complete") || (str == "interactive") {

        print("page completely loaded")

    }
}

func webViewDidFinishLoad(_ webView: UIWebView) {


    webpageFullyLoaded(webView.stringByEvaluatingJavaScript(from: "document.readyState"))
}

Answer 2

WKWebView有此代表

/*! @abstract The web view's navigation delegate. */
    weak open var navigationDelegate: WKNavigationDelegate?

WKNavigationDelegate ：符合WKNavigationDelegate协议的类可以提供跟踪主框架导航进度和决定的方法主帧和子帧导航策略

这个委托有一个方法，可以帮助你

/*! @abstract Invoked when a main frame navigation completes.
     @param webView The web view invoking the delegate method.
     @param navigation The navigation.
     */
    @available(iOS 8.0, *)
    optional public func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!)

所以你可以试试这个

    func loadPage() {
        let webView = WKWebView()
        webView.navigationDelegate = self
        let url = URL(string: "https://web.spaggiari.eu/home/app/default/menu_webinfoschool_genitori.php?custcode=")!
        let request = URLRequest(url: url)
        webView.load(request)

    }

    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        // Do your work here
    }

另外，请确保此处的self符合WKNavigationDelegate。

<强>更新

要在同一个WKWebView中处理不同网页的加载，

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Swift.Void) {
        print("Page Being loaded is \(navigationAction.request), you can do your work here")
        decisionHandler(.allow)
    }

您可以在导航委托here

中详细了解可以执行的操作

在WKWebView完成加载和抓取特定页面后执行某些操作

2 个答案: