how to download/create pdf through webview in flutter

Question

I have created a webviewscaffold but can\'t download anything from it while browsing from the webview, I made but when I click the button it does nothing. I don\'t know wher

Answer 1

If you are the owner of html page, you can check workaround that works for me. In source of your html page add onclick function for specific resource links:

function downloadpdf() {
      var currentHref = window.location.href;
      window.history.pushState(null, null, '/app/somepdf.pdf');
      setTimeout(() => window.location.replace(currentHref), 1000);
}

In Flutter code add listener:

StreamSubscription _onWebViewUrlChanged;
_onWebViewUrlChanged =
    FlutterWebviewPlugin().onUrlChanged.listen((String url) {
      if (url.contains('.pdf')) {
        launchURL(url);
      }
});

launchURL will open predefined url in external browser window. So you can download pdf/etc from flutter_webview_plugin.

You should add some your app-specific js/flutter magic