tutorial open example apple ios swift uiwebview wkwebview

ios - open - wkwebview apple



MigraciĆ³n de UIWebView a WKWebView (3)

UIWebView => WKWebView Equivalente

didFailLoadWithError => didFailNavigation webViewDidFinishLoad => didFinishNavigation webViewDidStartLoad => didStartProvisionalNavigation shouldStartLoadWithRequest => decidePolicyForNavigationAction

Sobre shouldStartLoadWithRequest puede escribir:

func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: ((WKNavigationActionPolicy) -> Void)) { print("webView:/(webView) decidePolicyForNavigationAction:/(navigationAction) decisionHandler:/(decisionHandler)") switch navigationAction.navigationType { case .LinkActivated: if navigationAction.targetFrame == nil { self.webView?.loadRequest(navigationAction.request) } if let url = navigationAction.request.URL where !url.absoluteString.hasPrefix("http://www.myWebSite.com/example") { UIApplication.sharedApplication().openURL(url) print(url.absoluteString) decisionHandler(.Cancel) return } default: break } if let url = navigationAction.request.URL { print(url.absoluteString) } decisionHandler(.Allow) }

Y para didFailLoadWithError :

func webView(webView: WKWebView, didFailNavigation navigation: WKNavigation, withError error: NSError) { print("webView:/(webView) didFailNavigation:/(navigation) withError:/(error)") let testHTML = NSBundle.mainBundle().pathForResource("back-error-bottom", ofType: "jpg") let baseUrl = NSURL(fileURLWithPath: testHTML!) let htmlString:String! = "myErrorinHTML" self.webView.loadHTMLString(htmlString, baseURL: baseUrl) }

en mi aplicación estoy migrando de UIWebView a WKWebView, ¿cómo puedo reescribir estas funciones para WKWebView?

func webViewDidStartLoad(webView: UIWebView){} func webViewDidFinishLoad(webView: UIWebView){}

y

func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool { print("webview asking for permission to start loading") if navigationType == .LinkActivated && !(request.URL?.absoluteString.hasPrefix("http://www.myWebSite.com/exemlpe"))!{ UIApplication.sharedApplication().openURL(request.URL!) print(request.URL?.absoluteString) return false } print(request.URL?.absoluteString) lastUrl = (request.URL?.absoluteString)! return true } func webView(webView: UIWebView, didFailLoadWithError error: NSError?) { print("webview did fail load with error: /(error)") let testHTML = NSBundle.mainBundle().pathForResource("back-error-bottom", ofType: "jpg") let baseUrl = NSURL(fileURLWithPath: testHTML!) let htmlString:String! = "myErrorinHTML" self.webView.loadHTMLString(htmlString, baseURL: baseUrl) }


Aquí están los métodos Objective-C para la migración.

1) shouldStartLoadWithRequest -> decidePolicyForNavigationAction

Recuerde llamar a la decisionHandler

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler { if (navigationAction.navigationType == UIWebViewNavigationTypeLinkClicked) { } NSString *url = [navigationAction.request.URL query]; decisionHandler(WKNavigationActionPolicyAllow); }

2) webViewDidStartLoad -> didStartProvisionalNavigation

- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation { }

3) webViewDidFinishLoad -> didFinishNavigation

- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation { }

4) didFailLoadWithError -> didFailNavigation

- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error { }


Migración de UIWebView a WKWebView, Swift 4 :

Equivalente de shouldStartLoadWithRequest :

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { var action: WKNavigationActionPolicy? defer { decisionHandler(action ?? .allow) } guard let url = navigationAction.request.url else { return } print(url) if navigationAction.navigationType == .linkActivated, url.absoluteString.hasPrefix("http://www.example.com/open-in-safari") { action = .cancel // Stop in WebView UIApplication.shared.openURL(url) // Open in Safari } }

Equivalente de webViewDidStartLoad :

func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) { print(String(describing: webView.url)) }

Equivalente de didFailLoadWithError :

func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) { let nserror = error as NSError if nserror.code != NSURLErrorCancelled { webView.loadHTMLString("404 - Page Not Found", baseURL: URL(string: "http://www.example.com/")) } }

Equivalente de webViewDidFinishLoad :

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) { print(String(describing: webView.url)) }