push() method in flutter code example

Example 1: flutter push route

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

Example 2: flutter navigation pushreplacement

void _completeLogin() {
  Navigator.pushReplacement(
      context, MaterialPageRoute(builder: (BuildContext context) => MyHomePage()));
}