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iOS WKWebView的具体使用
iOS8之后WKWebView相较于UIWebView更具有优势,体现在:
1、更多的支持HTML5的特性。
2、高达60fps的滚动刷新率以及内置手势。
3、Safari相同的JavaScript引擎。
4、占用更少的内存等。
工具/原料
- Xcode
- iPhone
- Mac
方法/步骤
页面开始加载时调用:
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation
当内容开始返回时调用:
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation
页面加载完成之后调用:
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
页面加载失败时调用:
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation
接收到服务器跳转请求之后调用:
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation
在收到响应后,决定是否跳转:
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler
在发送请求之前,决定是否跳转:
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
创建一个新的WebView:
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures
输入框:
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler
确认框:
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler
警告框:
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
以上方法由办公区教程网编辑摘抄自百度经验可供大家参考!
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