What methods can be used for navigation in applications or systems?

In Flutter, navigation between screens (pages) is usually done using the Navigator. The main navigation methods are:

• Navigator.push(context, route) — transition to a new screen, adding it to the navigation stack.
• Navigator.pop(context) — return to the previous screen, removing the current one from the stack.
• Navigator.pushReplacement(context, route) — replace the current screen with a new one.
• Navigator.pushNamed(context, routeName) — navigate by route name, if routes are registered.

You can also use more advanced navigation packages, such as go_router or auto_route, which simplify route management and allow declarative navigation.

Example of a simple transition:

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

Thus, navigation in Flutter apps is built on managing the stack of screens through the Navigator.