1. pubspec.yaml

              dependencies:
                flutter:
                  sdk: flutter
                get_storage: ^2.0.3  # Use the latest version

2. import the necessary packages:

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

3. Storing Data:

class StorageController extends GetxController {
  final box = GetStorage();

  void saveData() {
    box.write('key', 'Hello, GetStorage!'); // Save data with a key
  }
}

4. Retrieving Data:

class StorageController extends GetxController {
  final box = GetStorage();

  String? getData() {
    return box.read('key'); // Retrieve data using the key
  }
}

5. Using GetX Controller:

void main() async {
  await GetStorage.init(); // Initialize GetStorage

  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      title: 'GetStorage Example',
      home: Scaffold(
        appBar: AppBar(
          title: Text('GetStorage Example'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: () {
              StorageController().saveData(); // Save data on button press
              String? data = StorageController().getData(); // Retrieve data
              print(data); // Print the retrieved data
            },
            child: Text('Save & Retrieve Data'),
          ),
        ),
      ),
    );
  }
}