title: Get current URL in webview
body: <p>I am using <a href="https://pub.dartlang.org/packages/flutter_webview_plugin" rel="nofollow noreferrer">Flutter WebView Plugin</a> to create <code>webview</code> in Flutter app.
  I have added a <code>reload</code> icon inside the <code>appBar</code>. In order to make the <code>reload</code> icon functional, I want to get the <code>current URL</code> from <code>webview</code>.</p>
  
  <p><strong>WebView:</strong></p>
  
  <pre><code>return new MaterialApp(
        theme
          : new ThemeData(
          primaryColor: Color.fromRGBO(58, 66, 86, 1.0), fontFamily: 'Raleway'),
        routes: {
          "/": (_) =&gt; new WebviewScaffold(
            url: url,
            appBar: new AppBar(
              title: Text(title),
              actions: &lt;Widget&gt;[
                IconButton(
                  icon: Icon(Icons.refresh, color: Color.fromRGBO(255, 255, 255, 1.0),),
                  onPressed: () =&gt; flutterWebviewPlugin.reloadUrl(url), // this is reloading the url that was provided to webview, not the current URL.
                )
              ],
            ),
            withJavascript: true,
            withLocalStorage: true,
            appCacheEnabled: true,
            hidden: true,
            initialChild: Container(
              child: const Center(
                child: CircularProgressIndicator(),
              ),
            ),
          )
        },
      );
  </code></pre>
  
  <p>Is there any function to get the <code>current URL</code> from <code>webview</code> or any other method? Please help.</p>