How to get the current user agent used by WebView before load an url?

Question

I'm looking for a way to get the actual Flutter Webview User Agent before loading an url.
It seems not be possible...

Answer 1

Hey :) I'm a little late, but to answer your question, yes this is defintely possible and here's how I've done it in the past:

After you've set your web view controller, e.g.:

import 'package:webview_flutter/webview_flutter.dart';
....
late WebViewController webViewControllerObj;
....
webViewControllerObj = WebViewController.fromPlatformCreationParams(paramsObj);
if (webViewControllerObj.platform is WebKitWebViewController) {
   (webViewControllerObj.platform as WebKitWebViewController).setInspectable(true);
}
webViewControllerObj
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..addJavaScriptChannel('Flutter', onMessageReceived: handleWebMessage)
      ..setNavigationDelegate(NavigationDelegate(
 ........

You can retrieve the userAgent string before loading the url like so:

var userAgentStr = await webViewControllerObj.getUserAgent();

Hope this helps, let me know if you have any questions - Amy :)