ios controller内加拦截器 controller： [图片][图片] - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {     printf("\n======================\n");     NSString *absoluteString = [navigationAction.request.URL.absoluteString stringByRemovingPercentEncoding];     NSURLRequest *request        = navigationAction.request;     NSString     *scheme         = [request.URL scheme];    if (![scheme isEqualToString:@"https"] && ![scheme isEqualToString:@"http"]) {         printf("\n跳转微信\n");         if ([scheme isEqualToString:@"weixin"]) {             decisionHandler(WKNavigationActionPolicyCancel);             BOOL canOpen = [[UIApplication sharedApplication] canOpenURL:request.URL];             if (canOpen) {                 [[UIApplication sharedApplication] openURL:request.URL];             }             return;         }         decisionHandler(WKNavigationActionPolicyAllow);     }else{         decisionHandler(WKNavigationActionPolicyAllow);     } }