WKWebView的特点:
- 性能高,稳定性好,占用的内存比较小,
- 支持JS交互
- 支持HTML5 新特性
- 可以添加进度条(然并卵,不好用,还是习惯第三方的)。
- 支持内建手势,
- 据说高达60fps的刷新频率(不卡)
创建时候很简单
- 导入Wbkit这个类库(WKWebVeiw包含在里面的)
- 遵守协议(一般前两个就行啦,第三个主要是与JS相关的东西,这个协议中包含一个必须实现的方法,这个方法是提高App与web端交互的关键,它可以直接将接收到的JS脚本转为OC或Swift对象--网上大神说的,我没用过。)
@interface ViewController : UIViewController<WKNavigationDelegate,WKUIDelegate,WKScriptMessageHandler>
3.创建个WebView的对象
WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.baidu.com"]]];
[self.view addSubview:webView];
1. WKNavigationDelegate来追踪加载过程// 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;
2.WKNavigtionDelegate来进行页面跳转
// 接收到服务器跳转请求之后再执行
- (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######可以跳转appStore或者拨号(WKWebView默认不支持 打开ituns.apple.com跳转到appStore, 拨打电话, 唤起邮箱等一系列操作)- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {if(webView != self.wkWebView) {decisionHandler(WKNavigationActionPolicyAllow);return;}UIApplication *app = [UIApplication sharedApplication];if ([url.scheme isEqualToString:@"tel"]){if ([app canOpenURL:url]){[app openURL:url];decisionHandler(WKNavigationActionPolicyCancel);return;}}if ([url.absoluteString containsString:@"ituns.apple.com"]){if ([app canOpenURL:url]){[app openURL:url];decisionHandler(WKNavigationActionPolicyCancel);return;}}decisionHandler(WKNavigationActionPolicyAllow);}
2. WKUIDelegate
//1.创建一个新的WebVeiw
- (nullable WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures;
//2.WebVeiw关闭(9.0中的新方法)
- (void)webViewDidClose:(WKWebView *)webView NS_AVAILABLE(10_11, 9_0);
//3.显示一个JS的Alert(与JS交互)
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler;
//4.弹出一个输入框(与JS交互的)
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler;
//5.显示一个确认框(JS的)
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler;
注意:方法里有block的要根据block返回对应的对象,不然会崩掉
时间: 2024-10-10 13:23:07