I would like to update the values in one page and get the updated value in next page.
here is my riverpod provider:

import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:path/path.dart' as path;
import 'package:sqflite/sqflite.dart' as sql;
import 'package:sqflite/sqlite_api.dart';

import 'package:coffee_shop_app/models/coffee.dart';

Future<Database> _getDatabase() async {
  final dbPath = await sql.getDatabasesPath();
  final db = await sql.openDatabase(
    path.join(dbPath, 'coffee.db'),
    onCreate: (db, version) {
      return db.execute(
          'CREATE TABLE cart_provider(id TEXT PRIMARY KEY, coffeeImage TEXT, CoffeeName TEXT, CoffeePrice REAL)');
    },
    version: 1,
  );
  return db;
}

class CartNotifier extends StateNotifier<List<Coffee>> {
  CartNotifier() : super([]);

  Future<void> loadCoffee() async {
    final db = await _getDatabase();
    final data = await db.query('cart_provider');
    final coffees = data
        .map(
          (row) => Coffee(
            id: row['id'] as String,
            coffeeImage: row['coffeeImage'] as String,
            coffeeName: row['CoffeeName'] as String,
            coffeePrice: row['CoffeePrice'] as double,
          ),
        )
        .toList();

    state = coffees;
  }

  Future<void> addCoffee(Coffee coffee) async {
    if (state.contains(coffee) == true) {
      return;
    } else {
      final db = await _getDatabase();
      await db.insert(
        'cart_provider',
        {
          'id': coffee.id,
          'coffeeImage': coffee.coffeeImage,
          'CoffeeName': coffee.coffeeName,
          'CoffeePrice': coffee.coffeePrice,
        },
      );

      state = [...state, coffee];
    }
  }

  void removeCoffee(Coffee coffee) async {
    final db = await _getDatabase();
    await db.delete(
      'cart_provider',
      where: 'id = ?',
      whereArgs: [coffee.id],
    );

    state = state.where((c) => c != coffee).toList();
  }

  bool isAdded(Coffee coffee) {
    if (state.contains(coffee)) {
      return true;
    } else {
      return false;
    }
  }
}

final cartProvider = StateNotifierProvider<CartNotifier, List<Coffee>>((ref) {
  final notifier = CartNotifier();
    return notifier;
});

if you need more information please tell me.