Open flutter dialog after navigation

Question

I call Navigator pushReplacement to show a new view within my flutter app and want to immediately pop up a simple dialog to introduce the page to the user. (I want the user

Answer 1

You can call the dialog from inside 'initState()' dalaying its appearance after the first frame has been drawn.

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) async {
      await showDialog(
        context: context,
        builder: (BuildContext context) => new AlertDialog(
              title: new Text("title"),
              content: new Text("Message"),
              actions: [
                new FlatButton(
                  child: new Text("OK"),
                  onPressed: () {
                    Navigator.of(context).pop();
                  },
                ),
              ],
            ),
      );
    });
  }