How to Implement Specific Actions for Floating Action Button Depending on the Current Screen in Flutter?

I have a Flutter app with a BottomNavigationBar that allows users to navigate between different screens (HomeScreen, ProfileScreen, and SettingsScreen). I want to implement a FloatingActionButton in the MyHomePage widget that performs different actions based on which screen is currently displayed. The different actions themselves are defined in the corresponding pages as functions (HomeScreen, ProfileScreen, SettingsScreen).

For instance:

• On the HomeScreen, the FAB might open a new post dialog.
• On the ProfileScreen, it might navigate to the edit profile page.
• On the SettingsScreen, it might open the app’s settings.

How can I make the FAB’s onPressed function aware of the current screen and execute the specific logic associated with that screen?

Here’s a simplified version of my code:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'My App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _currentIndex = 0;
  final List<Widget> _screens = [
    HomeScreen(),
    ProfileScreen(),
    SettingsScreen(),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My App'),
      ),
      body: _screens[_currentIndex],
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _currentIndex,
        onTap: (index) {
          setState(() {
            _currentIndex = index;
          });
        },
        items: [
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Home',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.person),
            label: 'Profile',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.settings),
            label: 'Settings',
          ),
        ],
      ),
    );
  }
}

class HomeScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text('Home Screen'),
    );
  }
}

class ProfileScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text('Profile Screen'),
    );
  }
}

class SettingsScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text('Settings Screen'),
    );
  }
}

Any help or guidance would be much appreciated!