WKWebiView 使用

WKWebiView iOS8.0 出现，性能要远远好于 iOS 2.0时出现的 UIWebView,主要记录WKWebView 的创建和代理方法

创建WKWebView

WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
self.webView = webView;
[self.view addSubview:webView];
webView.UIDelegate = self;
webView.navigationDelegate = self;
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.baidu.com"]]];

遵守协议 WKNavgationDelegate WKUIDelegate

代理方法

  • WKNavgationDelegate 方法

    • 发送请求之前决定是否跳转

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      - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {

      	decisionHandler(WKNavigationActionPolicyAllow);
      	// 不允许跳转
         decisionHandler(WKNavigationActionPolicyCancel);
      	NSLog(@"decidePolicyForNavigationAction");
      }

    • 收到相应之后决定是否跳转

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      - (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {

      	decisionHandler(WKNavigationResponsePolicyAllow);
      	
      	decisionHandler(WKNavigationResponsePolicyCancel);
      	
      	NSLog(@"decidePolicyForNavigationResponse");

      }

    • 开始加载时调用

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

      NSLog(@"didStartProvisionalNavigation");
      }

    • 接受到服务器的跳转请求时调用

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      - (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(null_unspecified WKNavigation *)navigation {
      	NSLog(@"didReceiveServerRedirectForProvisionalNavigation");
      }
- 页面加载失败时调用 **存在缓存问题**


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- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
		
	NSLog(@"error= %@", error);
}



- 内容开始返回时调用


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- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation {

	NSLog(@"didCommitNavigation");
}

  • 内容返回成功后调用

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

    	NSLog(@"didFinishNavigation");
    }

  • 开始返回错误时调用

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

    	NSLog(@"didFailNavigation");
    }

  • 目前不知道什么时候调用

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    - (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler {
    	NSLog(@"didReceiveAuthenticationChallenge");
    }

    • 目前不知道什么时候调用

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      - (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView API_AVAILABLE(macosx(10.11), ios(9.0)) {

      	NSLog(@"webViewWebContentProcessDidTerminate");
      }