Explain Navigator Widget and its push/pop functions in Flutter?

The Navigator widget in Flutter is used for managing a stack of Route objects, where each Route represents a full-screen widget. It provides methods for pushing and popping routes to navigate between screens[4].

Pushing a new route

To navigate to a new route, use the Navigator.push() method. This adds a new Route to the top of the Navigator's stack[4]:

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

The MaterialPageRoute is commonly used as it provides a platform-specific animation when transitioning to the new route[4].

Popping a route

To return to the previous route, use the Navigator.pop() method. This removes the current Route from the Navigator's stack[4][5]:

Navigator.pop(context);

If you want to pass data back to the previous route when popping, you can provide a result argument to pop()[5]:

Navigator.pop...