Can you explain the concept and main features of the Navigator 1.0 pattern?

Navigator 1.0 in Flutter is a basic mechanism for navigation between screens (pages) of an app. It works as a stack, where each new screen is placed on top of the previous one, and returning to the previous screen is done by removing the top element of the stack.

Main features of Navigator 1.0:

• Navigation is based on push and pop methods for adding and removing screens.
• To navigate to a new screen, push is used, which places a new Route in the stack.
• To return to the previous screen, pop is called, which removes the top route.
• Navigation management is done through the Navigator object, which can be obtained from the context.

Example of navigating to a new screen:

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

Example of going back:

Navigator.pop(context);

Navigator 1.0 is simple and convenient for most applications, but it does not support a declarative navigation style and complex scenarios, which are addressed in Navigator 2.0.