title: Open Webpage in Webview with dynamic url parameters [Flutter - WebViewScaffold]
body: <p>I am trying to open a webpage in the webview but with a dynamic url in Flutter WebViewScaffold widget.</p>
  
  <pre><code>               WebviewScaffold(
                    url: "https://www.svstepaper.com/api/web-view/$api_token/$device_id/$getDate/$getPage?",
                    withJavascript: true,
                    // run javascript
                    withZoom: true,
                    hidden: true,
                    clearCache: true,
                    clearCookies: true,
                    displayZoomControls: true,
                    bottomNavigationBar: BottomNavigationBar(
                      type: BottomNavigationBarType.fixed,
                      onTap: (int index) {
                        setState(() {
                          print(index);
                          if (index == 0) {
                            flutterWebviewPlugin.goBack();
                          } else if (index == 1) {
                            flutterWebviewPlugin.reload();
                          } else if (index == 2) {
                            flutterWebviewPlugin.goForward();
                          }
                        });
                      },
                      items: [
                        BottomNavigationBarItem(
                          icon: Icon(Icons.arrow_back),
                          title: Text('Back'),
                        ),
                        BottomNavigationBarItem(
                          icon: Icon(Icons.refresh),
                          title: Text('Refresh'),
                        ),
                        BottomNavigationBarItem(
                          icon: Icon(Icons.arrow_forward),
                          title: Text('Forword'),
                        ),
                      ],
                    ),
                    initialChild: Container(
                      // but if you want to add your own waiting widget just add InitialChild
                      color: Colors.white,
                      child: const Center(
                        child: Text('waiting...'),
                      ),
                    ),
                  )
  </code></pre>
  
  <p>my url is "<a href="https://www.svstepaper.com/api/web-view/" rel="nofollow noreferrer">https://www.svstepaper.com/api/web-view/</a>$api_token/$device_id/$getDate/$getPage?" where i am passing the token, device id, date and page number as parameters. </p>
  
  <p>The URL is correct as i have seen from debugging. When i copy and paste the url from debug console to a browser, it opens correctly but it does not open inside the WebView (gives 404 not found error).</p>
  
  <p>What is wrong here?</p>