RxList is a part of the flutter_riverpod package, a state management library similar to Provider. The RxList class is provided by the riverpod package to create reactive lists. Reactive programming involves building UI components that automatically update when the underlying data changes.

1. pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  riverpod: ^1.0.0-dev.14  # Ensure the version is updated

2. screen

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

final myListProvider = StateProvider<RxList<String>>((ref) => RxList<String>());

void main() {
  runApp(
    ProviderScope(
      child: MyApp(),
    ),
  );
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('RxList Example'),
        ),
        body: MyListView(),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            // Adding an item to the list
            final myList = context.read(myListProvider).state;
            myList.add('New Item');
          },
          child: Icon(Icons.add),
        ),
      ),
    );
  }
}

class MyListView extends ConsumerWidget {
  @override
  Widget build(BuildContext context, ScopedReader watch) {
    final myList = watch(myListProvider).state;

    return ListView.builder(
      itemCount: myList.length,
      itemBuilder: (context, index) {
        return ListTile(
          title: Text(myList[index]),
          // Add onTap or other interactions as needed
        );
      },
    );
  }
}

In this example:

myListProvider creates a state provider for an RxList.
The MyApp widget sets up the basic scaffold and provides a floating action button to add items to the list.
The MyListView widget, as a ConsumerWidget, listens to changes in the RxList state and displays its content using a ListView.builder.