How to navigate to other page without animation Flutter

Question

I have a Login page, when I log on to go to the main page of my app i am using Navigator.pushReplacement(context, new MaterialPageRoute(builder: (BuildContext context)

Answer 1

Make sure you also set transitionDuration otherwise you may push the new route without animation but when you press back button, you'll see some delay.

Navigator.push(
  context,
  PageRouteBuilder(
    pageBuilder: (_, __, ___) => Screen2(),
    transitionDuration: Duration(seconds: 0),
  ),
);