ios - 如何从 didFailProvisionalNavigation 方法获取失败的 URL

Question

我正在尝试为我的 web View 显示错误消息，我需要知道不可用的 url，所以我实现了委托(delegate)方法:

- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error {
    [self.addressBar finishLoadingProgressAnimated:YES];
    NSLog(@"%@", webView.URL);
    [self showErrorPageForURL:error.userInfo[NSErrorFailingURLStringKey]];
}

但 NSErrorFailingURLStringKey 已被弃用，那么如何获取失败的 URL？WKNavigation 的界面是空的。此时 webView.URL == nil。

Answer 1

swift 3 或 swift 4

func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
    if error._domain == "WebKitErrorDomain" {
        if let info = error._userInfo as? [String: Any] {
            if let url = info["NSErrorFailingURLKey"] as? URL {

            }
            if let urlString = info["NSErrorFailingURLStringKey"] as? String {

            }
        }
    }
}