UI WebView에서 WKWebView로 마이그레이션

UI WebView에서 WKWebView로 마이그레이션

UIWebView에서 WKWebView로 마이그레이션하려고 하는데, WKWebView에 대해 이러한 기능을 다시 작성하려면 어떻게 해야 합니까?

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

그리고.

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)
}

UI WebView => WKWebView 동등품

UIWebViewDelegate => WKNavigationDelegate

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

대해서shouldStartLoadWithRequest다음과 같이 쓸 수 있습니다.

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (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, !url.absoluteString.hasPrefix("http://www.myWebSite.com/example") {
            UIApplication.shared.open(url)
            print(url.absoluteString)
            decisionHandler(.cancel)
        return
        }
        default:
            break
    }
    
    if let url = navigationAction.request.url {
        print(url.absoluteString)
    }
    decisionHandler(.allow)
}

그리고.didFailLoadWithError:

func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
    print("webView:\(webView) didFailNavigation:\(navigation) withError:\(error)")
    let testHTML = Bundle.main.path(forResource: "back-error-bottom", ofType: "jpg")
    let baseUrl = URL(fileURLWithPath: testHTML!)

    let htmlString = "myErrorInHTML"
    self.webView.loadHTMLString(htmlString, baseURL: baseUrl)
}

마이그레이션을 위한 Objective-C 방법은 다음과 같습니다.

1. shouldStartLoadWithRequest -> 탐색 작업에 대한 정책 결정

전화하는 것을 기억하세요.decisionHandler:

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
       if (navigationAction.navigationType == WKNavigationTypeLinkActivated) {

       }
       NSString *url = [navigationAction.request.URL query];
                
       decisionHandler(WKNavigationActionPolicyAllow);
}

2. webViewDidStartLoad -> 임시 탐색을 시작했습니다.

- (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 {
}

UI WebView를 WKWebView, Swift 4로 마이그레이션:

의 등가물shouldStartLoadWithRequest:

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.open(url)    // Open in Safari
    }
}

의 등가물webViewDidStartLoad:

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

의 등가물didFailLoadWithError:

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/"))
    }
}

의 등가물webViewDidFinishLoad:

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

언급URL : https://stackoverflow.com/questions/37509990/migrating-from-uiwebview-to-wkwebview