WKWebView没有打开某些目标="_ blank"链接 [英] WKWebView not opening SOME target="_blank" links

问题描述

我已经在此处实施了公认的解决方案.它确实适用于 一些网站.例如:访问www.tomcruise.com并单击他的预告片.这些链接中的每个链接都有target ="_ blank"，并在实现先前链接的堆栈溢出文章中建议的解决方案后开始打开.

I have implemented the accepted solutions here and it does work for some websites. For eg: Go to www.tomcruise.com and click on his trailers. Each of those links have target="_blank" and started opening after implementing the solution suggested in the previously linked stack overflow post.

但是现在我发现，如果我们转到此处，然后单击任意链接(一个在撰写此问题时，我尝试了如下所示的href标签

But now I found that if we go to here and click on any link(the one I tried, as of writing this question, has a href tag as below

 <a rel="nofollow" target="_blank" href="http://www.nowmagazine.co.uk/celebrity-news/victoria-and-david-beckham-fighting-to-be-together-296082" class="ot-anchor aaTEdf" jslog="10929; track:click" dir="ltr">http://www.nowmagazine.co.uk/celebrity-news/victoria-and-david-beckham-fighting-to-be-together-296082</a>

当我从WKWebView内部单击此链接时，下面的WKUIDelegate方法确实被调用，但是具有navigationAction.request ="，因此，在调用webView.loadRequest(")时没有任何反应.还有其他人遇到这个问题吗?

When I click on this link from inside WKWebView, the WKUIDelegate method below, does get called but has navigationAction.request = "" and hence nothing happens when webView.loadRequest("") gets called. Anyone else face this issue?

  optional func webView(_ webView: WKWebView, createWebViewWithConfiguration configuration: WKWebViewConfiguration,
       forNavigationAction navigationAction: WKNavigationAction,
            windowFeatures windowFeatures: WKWindowFeatures) -> WKWebView?{
      if navigationAction.targetFrame == nil {
          webView.loadRequest(navigationAction.request)
      }

      return nil
}

• 上面指定的href标记导致WKUIDelegate方法以空网址调用的特殊之处是什么?
• 我们如何解决此问题?让我知道您是怎么引起问题的，因为我也对调试感兴趣.

推荐答案

我希望我可以使用WKWebView委托方法来解决它，但我无法弄清楚.

I was hoping that I could solve it using the WKWebView delegate methods, but I could not figure it out.

因此，我进入了UIWebView时代解决方案，即在完成网页加载后运行javascript函数

So I went to the UIWebView era's solution of running a javascript function upon completion of web Page loading

func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
    let jsCode = "var allLinks = document.getElementsByTagName('a');if (allLinks) { var i;for (i=0; i<allLinks.length; i++) {var link = allLinks[i];var target = link.getAttribute('target');if (target && target == '_blank') {link.setAttribute('target','_self');} } }"
    webView.evaluateJavaScript(jsCode, completionHandler: nil)
}

这解决了以下问题:点击任何google plus帖子页面中的链接会导致加载空白页面

This fixed the issue where tapping on the links in any google plus Posts page was resulting in an empty page being loaded

2015年11月3日更新:问题中解释的现象，在Swift 2.0代码中对我而言不再发生.因此，您应该能够在此处出于您的所有目的

UPDATE on Nov 3rd 2015: The phenomenon explained in the question, no longer happens for me in Swift 2.0 code. So , you should be able to use the solution presented here for all your purposes

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