Objective-C-覆盖UIWebView中的URL？

是否可以覆盖UIWebView中的URL？例如，如果我想检测tel:links，并将+1添加到数字的开头（如果它还没有）

在Android上，我是这样做的：

public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if (url.startsWith("tel:1")) {
                        Intent intent = new Intent(Intent.ACTION_DIAL,
                                Uri.parse(url)); 
                        startActivity(intent);
                    }
                else if (url.startsWith("tel:")) {

                    int start = url.indexOf(":");
                    String suffix = url.substring(start + 1);
                    String newUrl = "tel:1" + suffix;
                        Intent intent = new Intent(Intent.ACTION_DIAL,
                                Uri.parse(newUrl)); 
                        startActivity(intent); 
                }

                else if(url.startsWith("http:") || url.startsWith("https:")) {
                    view.loadUrl(url);
                }
                return true;
            }

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如何在Objective-C中实现这一点？

您可以实现

webView:shouldStartLoadWithRequest:navigationType:

webView委托方法。检查“单击”的类型，然后检查请求的URL，查看它是否是

tel:

URL。如果是这样，您可以根据需要处理URL

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    if (navigationType == UIWebViewNavigationTypeLinkClicked) {
        NSURL *url = request.URL;
        NSString *scheme = [url scheme];
        if ([scheme isEqualToString:@"tel"]) {
            // Update the url as needed

            // Now handled the url by asking the app to open it
            [[UIApplication sharedApplication] openURL:url];
            return NO; // don't let the webview process it.
        }
    }

    return YES;
}

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美丽的。正是我需要的。谢谢