实例代码如下：
#import <WebKit/WebKit.h>
<WKNavigationDelegate,WKUIDelegate>
WKWebViewConfiguration *config = [WKWebViewConfiguration new];
config.preferences = [WKPreferences new];
config.preferences.javaScriptEnabled = YES;
config.preferences.javaScriptCanOpenWindowsAutomatically = YES;
WKWebView *webView_WK = [[WKWebView alloc]initWithFrame:frame configuration:config];
webView_WK.navigationDelegate = self;
webView_WK.UIDelegate = self;
[self.view addSubview: webView_WK];
#pragma mark - WKNavigationDelegate
// 请求开始前，会先调用此代理方法
//- (BOOL)webView:shouldStartLoadWithRequest:navigationType:
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSURLRequest *request = navigationAction.request;
if (navigationAction.navigationType == WKNavigationTypeLinkActivated &&
[request.URL.host.lowercaseString containsString:@"我是跨域标识符"]) {
// 对于跨域，需要手动跳转
[[UIApplication sharedApplication] openURL:navigationAction.request.URL];
// 不允许web内跳转
decisionHandler(WKNavigationActionPolicyCancel);
}
else {
NSString *word = [request.URL.absoluteString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(@"网址：%@",word);
//允许web内跳转
decisionHandler(WKNavigationActionPolicyAllow);
}
}
// 在响应完成时，会回调此方法
// 如果设置为不允许响应，web内容就不会传过来
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {
decisionHandler(WKNavigationResponsePolicyAllow);
}
// 开始导航跳转时会回调
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation {
}
// 接收到重定向时会回调
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(null_unspecified WKNavigation *)navigation {
}
// 导航失败时会回调
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
}
// 页面内容到达main frame时回调
- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation {
}
// 导航完成时，会回调（也就是页面载入完成了）
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation {
}
// 导航失败时会回调
- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
}
// 对于HTTPS的都会触发此代理，如果不要求验证，传默认就行
// 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 {
completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
}
// 9.0才能使用，web内容处理中断时会触发
- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView {
}
#pragma mark - WKUIDelegate
//需要打开新界面时
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
//会拦截到window.open()事件.
//只需要我们在在方法内进行处理
if (!navigationAction.targetFrame.isMainFrame) {
[webView loadRequest:navigationAction.request];
}
return nil;
}
- (void)webViewDidClose:(WKWebView *)webView {
}
// 在JS端调用alert函数时，会触发此代理方法。
// JS端调用alert时所传的数据可以通过message拿到
// 在原生得到结果后，需要回调JS，是通过completionHandler回调
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"alert" message:message preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler();
}]];
[self presentViewController:alert animated:YES completion:NULL];
}
// JS端调用confirm函数时，会触发此方法
// 通过message可以拿到JS端所传的数据
// 在iOS端显示原生alert得到YES/NO后
// 通过completionHandler回调给JS端
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"confirm" message:message preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(YES);
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
completionHandler(NO);
}]];
[self presentViewController:alert animated:YES completion:NULL];
}
// JS端调用prompt函数时，会触发此方法
// 要求输入一段文本
// 在原生输入得到文本内容后，通过completionHandler回调给JS
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"textinput" message:prompt preferredStyle:UIAlertControllerStyleAlert];
[alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
textField.textColor = [UIColor blackColor];
}];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler([[alert.textFields lastObject] text]);
}]];
[self presentViewController:alert animated:YES completion:NULL];
}
#pragma mark - 注入JS
/** 以文件的方式注入JS */
- (void)resgisterJSWithResource:(NSString *)resource ofType:(NSString *)type {
NSBundle *bundle = [NSBundle mainBundle];
NSString *filePath = [bundle pathForResource:resource ofType:type];
NSString *script = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
[self.webView_WK evaluateJavaScript:script completionHandler:nil];
}
/** 以字符串的方式注入JS */
- (void)stringByEvaluatingJavaScriptFromString:(NSString *)script {
[self.webView_WK evaluateJavaScript:script completionHandler:nil];
}
重要的事情只说一遍：
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
相当于UIWebView中的：
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
重要的事情只说一遍：
//需要打开新界面时：必须实现该代理，否则webView无响应
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
//会拦截到window.open()事件.
//只需要我们在在方法内进行处理
if (!navigationAction.targetFrame.isMainFrame) {
[webView loadRequest:navigationAction.request];
}
return nil;
}
