UIWEBVIEW和WKWebView学习

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UIWebViewDelegate

UIWebViewNavigationType{UIWebViewNavigationTypeLinkClicked，点击链接UIWebViewNavigationTypeFormSubmitted，提交表单UIWebViewNavigationTypeBackForward，点击前进或返回按钮UIWebViewNavigationTypeReload，点击重新加载按钮UIWebViewNavigationTypeFormResubmitted，重复提交表单UIWebViewNavigationTypeOther，发生其它行为}  __TVOS_PROHIBITED @protocol UIWebViewDelegate <NSObject>    @optional//询问是否允许加载页面请求。UIWebViewNavigationType是个枚举。 可以通过判断不同的枚举值拿到事件，进行操作。    - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;//页面开始加载    - (void)webViewDidStartLoad:(UIWebView *)webView;//页面加载完成    - (void)webViewDidFinishLoad:(UIWebView *)webView;//页面加载失败    - (void)webView:(UIWebView *)webView didFailLoadWithError:(nullable NSError *)error;    @en

WKWebView的WKNavigationDelegate比uiwebViewdelegate更加细化

@protocol WKNavigationDelegate <NSObject>@optional//请求之前，决定是否要跳转:用户点击网页上的链接，需要打开新页面时，将先调用这个方法。- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler;//接收到相应数据后，决定是否跳转- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler;//页面开始加载时调用- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation;// 主机地址被重定向时调用- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(null_unspecified WKNavigation *)navigation;// 页面加载失败时调用- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error;// 当内容开始返回时调用- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation;// 页面加载完毕时调用- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation;//跳转失败时调用- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error;// 如果需要证书验证，与使用AFN进行HTTPS证书验证是一样的- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *__nullable credential))completionHandler;//9.0才能使用，web内容处理中断时会触发- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView NS_AVAILABLE(10_11, 9_0);@end

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