What is the main role of the AppBar component in the application interface?

The AppBar component in Flutter is responsible for displaying the top app bar, which usually contains:

• The page or app title,
• Navigation elements (e.g., back button),
• User actions (icons for search, settings, etc.),
• Sometimes tabs or menus.

AppBar helps users navigate the app, provides access to main functions, and improves UX through a standardized layout.

Example of usage:

AppBar(
  title: Text('Home'),
  actions: [
    IconButton(
      icon: Icon(Icons.search),
      onPressed: () { /* search action */ },
    ),
  ],
)