How to create a transparent full screen dialog on top of activity - Flutter

Question

I am trying to create a transparent full screen dialog on top of activity. I have tried following this thread but solution doesn\'t work.

In short , what I need

Answer 1

Navigator.of(context).push(PageRouteBuilder(
    opaque: false,
    pageBuilder: (BuildContext context, _, __) {
        return YourFullScreenAlertDialog()
    }
));

YourFullScreenAlertDialog could be a widget that has a background color, Colors.transparent, like @creativecreatorormaybenot mentioned earlier.