Answers for "navigate to next screen flutter"

flutter navigate to new screen

// Within the `FirstRoute` widget
onPressed: () {
  Navigator.push(
    context,
    MaterialPageRoute(builder: (context) => SecondRoute()),
  );
}

Navigate to a new screen and back - Flutter

Navigator.push(
    context,
    MaterialPageRoute(builder: (context) => SecondRoute()),
  );