Open a WKWebview target=“_blank” link in Safari

Question

I am trying to get my Hybrid IOS app that uses Swift and WKWebviews to open a link that has target=\"_blank\" or if the URL contains http://,

Answer 1

In (from here)

 override func loadView() {
    super.loadView()
    self.webView.navigationDelegate = self 
    self.webView.UIDelegate = self  //must have this
 }

Then add the function (from here, with additions)...

func webView(webView: WKWebView,
    createWebViewWithConfiguration configuration: WKWebViewConfiguration,
    forNavigationAction navigationAction: WKNavigationAction,
    windowFeatures: WKWindowFeatures) -> WKWebView? {
        if navigationAction.targetFrame == nil {
            var url = navigationAction.request.URL
            if url.description.lowercaseString.rangeOfString("http://") != nil || url.description.lowercaseString.rangeOfString("https://") != nil || url.description.lowercaseString.rangeOfString("mailto:") != nil  {
                UIApplication.sharedApplication().openURL(url)
            }
        }
        return nil
}

Answer 2

Swift 4.2

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Swift.Void) {
    if navigationAction.navigationType == WKNavigationType.linkActivated {
        print("here link Activated!!!")
        if let url = navigationAction.request.url {
            let shared = UIApplication.shared
            if shared.canOpenURL(url) {
                shared.open(url, options: [:], completionHandler: nil)
            }
        }
        decisionHandler(.cancel)
    }
    else {
        decisionHandler(.allow)
    }
}

Answer 3

First add WKNavigationDelegate and webviewWk.navigationDelegate = self

func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: (WKNavigationActionPolicy) -> Void) {

        //this is a 'new window action' (aka target="_blank") > open this URL externally. If we´re doing nothing here, WKWebView will also just do nothing. Maybe this will change in a later stage of the iOS 8 Beta
        if navigationAction.navigationType == WKNavigationType.LinkActivated {
            println("here link Activated!!!")
            let url = navigationAction.request.URL
            let shared = UIApplication.sharedApplication()

            let urlString = url!.absoluteString

            if shared.canOpenURL(url!) {
                shared.openURL(url!)
            }

            decisionHandler(WKNavigationActionPolicy.Cancel)
        }

        decisionHandler(WKNavigationActionPolicy.Allow)
    }

Answer 4

Code updated for iOS 10 Swift 3:

override func loadView() {
    super.loadView()
    self.webView.navigationDelegate = self 
    self.webView.uiDelegate = self  //must have this
}

func webView(_ webView: WKWebView,
               createWebViewWith configuration: WKWebViewConfiguration,
               for navigationAction: WKNavigationAction,
               windowFeatures: WKWindowFeatures) -> WKWebView? {
    if navigationAction.targetFrame == nil, let url = navigationAction.request.url {
      if url.description.lowercased().range(of: "http://") != nil ||
        url.description.lowercased().range(of: "https://") != nil ||
        url.description.lowercased().range(of: "mailto:") != nil {
        UIApplication.shared.openURL(url)
      }
    }
  return nil
}

Answer 5

func webView(_ webView: WKWebView,
           createWebViewWith configuration: WKWebViewConfiguration,
           for navigationAction: WKNavigationAction,
           windowFeatures: WKWindowFeatures) -> WKWebView? {
  if navigationAction.targetFrame == nil, let url = navigationAction.request.url, let scheme = url.scheme {
    if ["http", "https", "mailto"].contains(where: { $0.caseInsensitiveCompare(scheme) == .orderedSame }) {
      UIApplication.shared.openURL(url)
    }
  }
  return nil
}