I'm trying to develop some notebook like this :

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

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        appBarTheme: const AppBarTheme(
          foregroundColor: Color.fromARGB(255, 95, 95, 95),
          backgroundColor: Colors.transparent,
        ),
      ),
      home: const HomeScreen(),
    );
  }
}

class NoteEntityData {
  final DateTime createdTime;
  final String title;
  final bool isImportant;
  final String description;

  const NoteEntityData({
    required this.createdTime,
    required this.title,
    this.isImportant = false,
    required this.description,
  });
}

class HomeScreen extends StatefulWidget {
  const HomeScreen({Key? key}) : super(key: key);

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  // late Database _database;

  @override
  void initState() {
    // _database = Database();
    super.initState();
  }

  @override
  void dispose() {
    // _database.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final size = MediaQuery.of(context).size;
    final double itemHeight = (size.height - kToolbarHeight - 24) / 2;
    final double itemWidth = size.width / 2;
    return Scaffold(
      backgroundColor: Colors.grey.shade200,
      drawer: const Drawer(),
      appBar: AppBar(
        elevation: 0,
        backgroundColor: Colors.grey.shade200,
        title: const Text(
          "All notes",
          style: TextStyle(
              fontWeight: FontWeight.w600,
              color: Color.fromARGB(255, 95, 95, 95)),
        ),
        actions: [
          IconButton(onPressed: () {}, icon: const Icon(Icons.search)),
          IconButton(
              onPressed: () {}, icon: const Icon(Icons.more_vert_outlined))
        ],
      ),
      body: FutureBuilder<List<NoteEntityData>>(
        future: Future.value([
          NoteEntityData(
            createdTime: DateTime.now(),
            title: 'Some title',
            isImportant: true,
            description: 'Hello guys