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Flutter

Flutter Complete Tutorial (107 Topics with Guides & Final App Project)

Complete Flutter tutorial covering Dart, widgets, state management, Firebase, APIs, device features, testing, store deployment, and a final mobile app project.

August 21, 2026 By malekimtiyajmca@gmail.com 19 min read

This complete Flutter tutorial covers 107 topics — from Dart fundamentals and widgets to state management, Firebase, device features, testing, and store deployment.

Course roadmap

1. Introduction to Flutter

Flutter is Google’s UI toolkit for building natively compiled apps for mobile, web, and desktop from one codebase. This series covers Dart, widgets, state management, backend integrations, testing, and a final full app project.

  1. Install Flutter and run a sample app.
  2. Learn Dart and core widgets.
  3. Ship features with state, APIs, and a final project.

Learning path

SDK + first app
Dart + widgets
Navigation + state
API/Firebase + device features
Testing + store release
Final Flutter app project

2. What is Flutter?

Flutter draws UI with its own engine, giving consistent look/performance across platforms while sharing most business logic and UI code.

Flutter at a glance

Language: Dart
UI: widgets
Targets: iOS, Android, web, desktop
Hot reload for fast iteration

3. Flutter Features and Advantages

Key advantages include developer speed, expressive UI, strong tooling, and growing ecosystem packages on pub.dev.

Advantages

Hot reload
Consistent UI
Single codebase
Strong widget library
Growing package ecosystem

4. Flutter vs React Native

Flutter uses Dart + its own rendering; React Native uses JavaScript/TypeScript with native components. Choose based on team skills and product needs.

Quick compare

Flutter → Dart, custom render engine
RN → JS/TS, native views bridge/Fabric
Both → cross-platform mobile
Pick by team + UX needs

5. Flutter SDK Installation

Download Flutter, add it to PATH, install platform toolchains, then fix doctor issues before coding.

  1. Install Flutter SDK.
  2. Add flutter to PATH.
  3. Run flutter doctor and fix issues.

Verify install

flutter doctor
flutter --version

6. Setting Up Android Studio for Flutter

Android Studio is a full IDE option for Flutter with device manager and profiling tools.

Setup checklist

Install Android Studio
Flutter + Dart plugins
Android SDK + emulator
Accept licenses

7. Setting Up VS Code for Flutter

VS Code is popular for Flutter: install extensions, select devices, and use the command palette for Flutter tools.

VS Code tips

Install Flutter + Dart extensions
Flutter: Select Device
Flutter: Run
DevTools from command palette

8. Creating Your First Flutter App

Use the CLI to scaffold a project, open it in your IDE, and run on emulator/device.

  1. Run flutter create.
  2. Start an emulator or connect a device.
  3. Run flutter run and try hot reload.

Create & run

flutter create hello_flutter
cd hello_flutter
flutter run

9. Flutter Project Structure

Most app code lives in lib/. Dependencies and assets are declared in pubspec.yaml.

Key paths

lib/main.dart → entry
pubspec.yaml → deps/assets
android/ ios/ → platform projects
test/ → tests

10. Dart Programming Basics

Dart is typed, object-oriented, and supports modern async patterns that Flutter relies on.

Hello Dart

void main() {
  print('Hello, Flutter');
}

11. Variables and Data Types in Dart

Prefer final for values that do not reassign; use const for compile-time constants.

Types example

var name = 'Imtiyaj';
final int age = 30;
const pi = 3.14;
bool isActive = true;

12. Operators in Dart

Null-aware operators (`??`, `?.`, `??=`) are essential with null safety.

Null-aware

String? nick;
print(nick ?? 'Guest');
nick ??= 'Dev';

13. Conditional Statements in Dart

Use clear conditions; prefer early returns in UI/builders when logic gets nested.

If / switch

if (score >= 50) {
  print('Pass');
} else {
  print('Retry');
}

14. Loops in Dart

Prefer collection methods for transforming lists in Flutter UI code.

Loop examples

for (var i = 0; i < 3; i++) {
  print(i);
}
for (final item in ['a', 'b']) {
  print(item);
}

15. Functions in Dart

Functions are first-class in Dart — pass callbacks into widgets and async APIs.

Function styles

int add(int a, int b) => a + b;

void greet(String name, {String title = 'Hi'}) {
  print('$title $name');
}

16. Lists, Sets and Maps in Dart

Lists are ordered; Sets are unique; Maps are key/value — all common in Flutter state and JSON.

Collections

final nums = <int>[1, 2, 3];
final tags = <String>{'dart', 'flutter'};
final user = <String, dynamic>{'id': 1, 'name': 'Asha'};

17. Null Safety in Dart

Null safety prevents many runtime crashes. Prefer safe access over blanket `!`.

Null safety

String? maybeName;
print(maybeName?.length);
final len = maybeName?.length ?? 0;

18. Classes and Objects in Dart

Flutter widgets are classes; your domain models should be clear Dart classes too.

Class example

class User {
  User(this.name);
  final String name;
}

final u = User('Sam');

19. Constructors in Dart

Named constructors clarify intent (`User.fromJson`); factories help caching/parsing.

Constructors

class Point {
  Point(this.x, this.y);
  Point.origin() : x = 0, y = 0;
  final int x, y;
}

20. Inheritance and Polymorphism in Dart

Prefer composition for UI, but inheritance is useful for shared model/base classes.

Extends

class Animal {
  void speak() => print('...');
}
class Dog extends Animal {
  @override
  void speak() => print('Woof');
}

21. Abstract Classes and Interfaces in Dart

Dart has no separate interface keyword — abstract classes + implements fill that role.

Abstract

abstract class AuthRepo {
  Future<bool> login(String email, String password);
}

22. Exception Handling in Dart

Handle async errors too — uncaught Futures become runtime issues.

Try/catch

try {
  final n = int.parse('x');
} on FormatException catch (e) {
  print(e);
}

23. Async, Await and Futures in Dart

Networking, storage, and many plugins return Futures — await them in async methods.

Async example

Future<String> fetchName() async {
  await Future.delayed(const Duration(milliseconds: 200));
  return 'Asha';
}

24. Streams in Dart

Streams power realtime updates — Firestore listeners, sockets, and progressive data.

Stream idea

Stream<int> ticks() async* {
  for (var i = 0; i < 3; i++) {
    yield i;
    await Future.delayed(const Duration(seconds: 1));
  }
}

25. Flutter Widgets

Compose UIs from small widgets. Prefer immutable widget configuration and rebuild efficiently.

Widget tree idea

MaterialApp
 → Scaffold
   → AppBar / Body / FAB
     → Column / ListView / ...

26. StatelessWidget in Flutter

Use StatelessWidget when the widget itself has no mutable local state.

Stateless example

class TitleText extends StatelessWidget {
  const TitleText(this.text, {super.key});
  final String text;
  @override
  Widget build(BuildContext context) => Text(text);
}

27. StatefulWidget in Flutter

Keep state local when it only affects one widget; lift/share state when many widgets need it.

setState example

setState(() {
  _count++;
});

28. Flutter Widget Lifecycle

Create controllers in initState and dispose them to avoid leaks.

Lifecycle tips

initState → setup
build → render
didUpdateWidget → parent changed config
dispose → cleanup controllers

29. Material Design in Flutter

Material 3 theming gives color schemes, typography, and components out of the box.

MaterialApp sketch

MaterialApp(
  theme: ThemeData(useMaterial3: true),
  home: const HomePage(),
);

30. Cupertino Widgets in Flutter

Use Cupertino for iOS look, or mix adaptively by platform.

Cupertino idea

CupertinoPageScaffold(
  navigationBar: const CupertinoNavigationBar(middle: Text('Home')),
  child: const Center(child: Text('Hello')),
);

31. Text and Text Styling in Flutter

Prefer theme text styles for consistency across the app.

TextStyle

Text(
  'Hello',
  style: Theme.of(context).textTheme.headlineMedium,
);

32. Container Widget in Flutter

Don’t over-nest Containers — use Padding/DecoratedBox when you only need one feature.

Container

Container(
  padding: const EdgeInsets.all(16),
  decoration: BoxDecoration(
    color: Colors.teal.shade50,
    borderRadius: BorderRadius.circular(12),
  ),
  child: const Text('Card body'),
);

33. Row and Column in Flutter

Control alignment with mainAxisAlignment and crossAxisAlignment; wrap flex children in Expanded/Flexible.

Column

Column(
  crossAxisAlignment: CrossAxisAlignment.start,
  children: const [
    Text('Title'),
    Text('Subtitle'),
  ],
);

34. Stack and Positioned in Flutter

Useful for badges on avatars, image overlays, and custom layouts.

Stack

Stack(
  children: [
    Image.asset('assets/hero.png'),
    const Positioned(right: 8, top: 8, child: Icon(Icons.favorite)),
  ],
);

35. ListView in Flutter

Prefer builders for long lists so children are created lazily.

ListView.builder

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) => ListTile(title: Text(items[index])),
);

36. GridView in Flutter

Use grids for galleries and product catalogs; tune crossAxisCount for breakpoints.

GridView

GridView.count(
  crossAxisCount: 2,
  children: List.generate(6, (i) => Card(child: Center(child: Text('$i')))),
);

37. Card and ListTile in Flutter

ListTile standardizes leading/title/subtitle/trailing patterns for settings and feeds.

ListTile

Card(
  child: ListTile(
    leading: const Icon(Icons.person),
    title: const Text('Profile'),
    trailing: const Icon(Icons.chevron_right),
    onTap: () {},
  ),
);

38. Buttons and Icons in Flutter

Pick button type by emphasis; keep tap targets accessible.

Buttons

ElevatedButton.icon(
  onPressed: () {},
  icon: const Icon(Icons.send),
  label: const Text('Send'),
);

39. Images and Assets in Flutter

Use Image.asset for bundled images and Image.network for remote URLs (with caching packages as needed).

pubspec assets

flutter:
  assets:
    - assets/images/logo.png

40. Custom Fonts in Flutter

Declare fonts under flutter/fonts in pubspec.yaml and reference the family name.

Font family use

Text(
  'Brand',
  style: TextStyle(fontFamily: 'Poppins', fontWeight: FontWeight.w600),
);

41. AppBar and Navigation in Flutter

Scaffold + AppBar is the common Material shell; Navigator manages the screen stack.

Push route

Navigator.of(context).push(
  MaterialPageRoute(builder: (_) => const DetailsPage()),
);

42. Drawer and Bottom Navigation in Flutter

Use bottom nav for top-level sections; drawers for secondary destinations.

Bottom nav idea

IndexedStack or body switch on index
BottomNavigationBar onTap → setState index

43. Forms and TextFields in Flutter

Use a GlobalKey<FormState> to validate and save form fields together.

Form sketch

final _formKey = GlobalKey<FormState>();
Form(
  key: _formKey,
  child: TextFormField(
    decoration: const InputDecoration(labelText: 'Email'),
    validator: (v) => (v == null || v.isEmpty) ? 'Required' : null,
  ),
);

44. Form Validation in Flutter

Call `formKey.currentState!.validate()` before submit; keep validators pure and clear.

Email validator

String? emailValidator(String? v) {
  if (v == null || v.isEmpty) return 'Required';
  if (!v.contains('@')) return 'Invalid email';
  return null;
}

45. Date and Time Picker in Flutter

Store DateTime in state and format for display with intl DateFormat.

Date picker

final date = await showDatePicker(
  context: context,
  firstDate: DateTime(2020),
  lastDate: DateTime(2030),
  initialDate: DateTime.now(),
);

46. Dropdown and Checkbox in Flutter

Keep selected values in state and rebuild on change.

CheckboxListTile

CheckboxListTile(
  value: agreed,
  onChanged: (v) => setState(() => agreed = v ?? false),
  title: const Text('I agree'),
);

47. Radio Buttons and Switches in Flutter

Group radios by a shared value in parent state.

Switch

Switch(
  value: darkMode,
  onChanged: (v) => setState(() => darkMode = v),
);

48. Dialogs and Bottom Sheets in Flutter

Use dialogs for decisions; bottom sheets for contextual actions/forms.

AlertDialog

showDialog(
  context: context,
  builder: (_) => AlertDialog(
    title: const Text('Delete?'),
    actions: [
      TextButton(onPressed: () => Navigator.pop(context), child: const Text('Cancel')),
    ],
  ),
);

49. SnackBar and Notifications in Flutter

SnackBars are in-app feedback. System push needs FCM/APNs setup covered later.

SnackBar

ScaffoldMessenger.of(context).showSnackBar(
  const SnackBar(content: Text('Saved')),
);

50. Navigation and Routes in Flutter

Start with MaterialPageRoute; graduate to named routes or Router API as apps grow.

Pop

Navigator.of(context).pop(result);

51. Named Routes in Flutter

Named routes help deep links and cleaner navigation calls.

Named routes

MaterialApp(
  initialRoute: '/',
  routes: {
    '/': (_) => const HomePage(),
    '/details': (_) => const DetailsPage(),
  },
);

52. Passing Data Between Screens in Flutter

Constructor args are clearest for direct pushes; use result values when returning data.

Pass via constructor

Navigator.push(
  context,
  MaterialPageRoute(builder: (_) => DetailsPage(id: item.id)),
);

53. Navigation 2.0 in Flutter

Navigation 2.0 shines for web URLs, deep links, and nested navigators — adopt when Navigator 1.0 gets limiting.

When to use

Complex deep linking
Web URL sync
Nested navigation shells
Otherwise start simpler

54. Responsive UI in Flutter

Design for phone/tablet widths; avoid hard-coded sizes when possible.

LayoutBuilder idea

LayoutBuilder(
  builder: (context, constraints) {
    final wide = constraints.maxWidth > 600;
    return wide ? const DesktopHome() : const MobileHome();
  },
);

55. Adaptive Layouts in Flutter

Responsive = size; adaptive = platform conventions + input methods.

Adaptive tip

Platform.isIOS → Cupertino patterns
Large screens → navigation rail
Touch vs pointer targets

56. Flutter Themes

Theme once, reuse everywhere via Theme.of(context).

ThemeData

ThemeData(
  colorScheme: ColorScheme.fromSeed(seedColor: Colors.teal),
  useMaterial3: true,
);

57. Dark and Light Mode in Flutter

Persist user preference and listen to platform brightness when using system mode.

themeMode

MaterialApp(
  themeMode: ThemeMode.system,
  theme: ThemeData.light(useMaterial3: true),
  darkTheme: ThemeData.dark(useMaterial3: true),
);

58. Animations in Flutter

Start with AnimatedContainer / AnimatedOpacity; use controllers for custom curves.

Implicit animation

AnimatedContainer(
  duration: const Duration(milliseconds: 300),
  width: expanded ? 200 : 100,
  color: Colors.teal,
);

59. Hero Animation in Flutter

Match Hero tags across routes for smooth image/title transitions.

Hero

Hero(
  tag: 'avatar-$id',
  child: CircleAvatar(backgroundImage: NetworkImage(url)),
);

60. Custom Animations in Flutter

Always dispose AnimationControllers in State.dispose.

Controller tip

SingleTickerProviderStateMixin
AnimationController + Tween
AnimatedBuilder
dispose controller

61. State Management in Flutter

Start simple; introduce a pattern when prop-drilling and rebuilds become painful.

Options

setState → local
Provider / Riverpod → reactive DI
Bloc/Cubit → event-driven
GetX → all-in-one (opinionated)

62. Provider State Management in Flutter

Provider is official-adjacent and beginner-friendly for app-wide state.

ChangeNotifier idea

class Counter extends ChangeNotifier {
  int value = 0;
  void inc() {
    value++;
    notifyListeners();
  }
}

63. Riverpod State Management in Flutter

Riverpod improves on Provider with better scoping and testing ergonomics.

Provider idea

final counterProvider = StateProvider<int>((ref) => 0);

64. Bloc and Cubit in Flutter

Cubit is simpler (functions); Bloc uses events — pick based on complexity.

Cubit sketch

class CounterCubit extends Cubit<int> {
  CounterCubit() : super(0);
  void inc() => emit(state + 1);
}

65. GetX in Flutter

GetX is productive but opinionated — document patterns so teams stay consistent.

GetX idea

GetxController + Obx
Get.to / Get.back navigation
Bindings for DI

66. REST API Integration in Flutter

Separate API client, DTO/models, and UI state for maintainability.

Layering

UI → repository/controller
→ API client (http/dio)
→ JSON model fromJson

67. HTTP Requests in Flutter

Always handle non-200 statuses and network errors in UI state.

http get

final res = await http.get(Uri.parse('https://api.example.com/items'));
if (res.statusCode == 200) {
  // parse res.body
}

68. JSON Parsing in Flutter

Use explicit models over Map everywhere for safer refactors.

fromJson

class Item {
  Item({required this.id, required this.title});
  final int id;
  final String title;
  factory Item.fromJson(Map<String, dynamic> json) => Item(
    id: json['id'] as int,
    title: json['title'] as String,
  );
}

69. API Authentication in Flutter

Store secrets in secure storage; never hardcode production keys in source.

Auth header

headers: {
  'Authorization': 'Bearer $token',
  'Content-Type': 'application/json',
}

70. JWT Authentication in Flutter

Handle expiry, logout, and 401 retries carefully to avoid loops.

JWT flow

Login → access/refresh tokens
Secure store tokens
Attach access token
On 401 → refresh or logout

71. Firebase Integration in Flutter

Configure Android/iOS apps in Firebase console, then initialize Firebase in main().

Init idea

WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
runApp(const MyApp());

72. Firebase Authentication in Flutter

Listen to authStateChanges to drive login vs home screens.

Auth state

FirebaseAuth.instance.authStateChanges().listen((user) {
  // null → logged out
});

73. Firebase Firestore in Flutter

Model collections carefully; use security rules — client code is not your security boundary.

Get docs

final snap = await FirebaseFirestore.instance.collection('posts').get();
for (final doc in snap.docs) {
  print(doc.data());
}

74. Firebase Storage in Flutter

Combine with image_picker; enforce Storage security rules for user paths.

Upload idea

Pick file → Reference child path → putFile → getDownloadURL

75. Firebase Cloud Messaging in Flutter

Request permissions, get FCM tokens, and handle foreground/background messages.

FCM checklist

Platform setup
Permission request
Token save to backend
Foreground handlers
Background/terminated handlers

76. Push Notifications in Flutter

Android needs channels; iOS needs permission + APNs setup via FCM.

Notification UX

Title/body clear
Tap → open relevant screen
Respect user settings

77. Google Maps Integration in Flutter

Add API keys per platform and restrict keys in Google Cloud Console.

Map widget idea

GoogleMap(
  initialCameraPosition: CameraPosition(target: LatLng(19.07, 72.87), zoom: 12),
  markers: markers,
);

78. Location Services in Flutter

Request permissions gracefully and handle denied/forever-denied states.

Location tip

Check service enabled
Request permission
getCurrentPosition / stream
Explain why you need location

79. Camera Integration in Flutter

Manage CameraController lifecycle; dispose on leave to free the hardware.

Camera tip

Init cameras list
Create Controller
Preview widget
dispose on exit

80. Image Picker in Flutter

Great for profile photos and uploads without full custom camera UI.

Pick image

final file = await ImagePicker().pickImage(source: ImageSource.gallery);

81. File Upload in Flutter

Use multipart requests for REST uploads; show progress for large files.

Multipart idea

http.MultipartRequest
+ MultipartFile.fromPath
→ send → parse response

82. Local Storage in Flutter

Choose storage by sensitivity and query needs — not one tool for everything.

Choose storage

Prefs → simple key/value
SQLite → relational queries
Hive → fast NoSQL docs
Secure storage → tokens/secrets

83. SharedPreferences in Flutter

Not for large datasets or secrets — use secure storage for tokens.

Prefs example

final prefs = await SharedPreferences.getInstance();
await prefs.setBool('darkMode', true);

84. SQLite Database in Flutter

Define schemas/migrations carefully as app versions evolve.

sqflite tip

openDatabase
onCreate tables
rawQuery / insert helpers
version migrations

85. Hive Database in Flutter

Good for offline caches and local collections with simple queries.

Hive idea

initFlutter
openBox
put/get values
typed adapters for models

86. Secure Storage in Flutter

Never put JWTs in plain SharedPreferences for production apps.

Secure write

const storage = FlutterSecureStorage();
await storage.write(key: 'access_token', value: token);

87. Payment Gateway Integration in Flutter

Prefer hosted/checkout sheets; never handle raw card data unless compliant.

Payment principles

Official SDK / Payment Sheet
Server-side amount verification
Test mode first
Handle success/fail/cancel

88. Stripe Integration in Flutter

Create intents on your backend; confirm on device; verify on server.

Stripe flow

Backend creates PaymentIntent
App presents Payment Sheet
Confirm → webhook/fulfill

89. PayPal Integration in Flutter

Validate completed payments server-side before unlocking content.

PayPal tip

Sandbox credentials
Create order server-side
Capture/verify
Then fulfill

90. In-App Purchases in Flutter

Follow store rules: digital goods usually must use IAP, not external cards.

IAP checklist

Product IDs in store consoles
Query products
Purchase + verify receipts
Restore purchases

91. Deep Linking in Flutter

Configure Android intent filters and iOS associated domains; map paths to routes.

Deep link tip

https://example.com/product/42 → ProductScreen(id: 42)
Test cold start + warm start

92. Social Login in Flutter

Use official plugins + Firebase Auth or your backend token exchange.

Social login tip

Platform console setup
Request scopes carefully
Map to app user session

93. Google Login in Flutter

Configure OAuth client IDs for Android/iOS/web correctly.

Google sign-in idea

google_sign_in package
→ idToken/accessToken
→ Firebase credential or backend verify

94. Facebook Login in Flutter

Follow Meta app review rules for permissions beyond public profile/email.

Facebook tip

Meta developer app
Android key hashes / iOS URL schemes
Limited permissions first

95. Apple Login in Flutter

Handle identity tokens and private relay emails correctly.

Apple tip

Apple Developer capability
sign_in_with_apple
Nonce + identity token verify

96. Flutter Testing

Test business logic heavily; widget-test critical UI; integration-test key flows.

Test types

Unit → pure Dart
Widget → UI pieces
Integration → full app flows

97. Unit Testing in Flutter

Keep logic out of widgets so unit tests stay easy.

Unit test

test('add works', () {
  expect(add(2, 3), 5);
});

98. Widget Testing in Flutter

Find by text/key/type; tap and re-pump to assert state changes.

Widget test idea

await tester.pumpWidget(const MaterialApp(home: HomePage()));
expect(find.text('Hello'), findsOneWidget);

99. Integration Testing in Flutter

Automate login → core journey → logout style paths on CI when possible.

Integration focus

Critical user journeys
Real device/emulator
Stable finders (Keys)

100. Debugging and Performance Optimization in Flutter

Avoid unnecessary rebuilds, huge images, and janky sync work on the UI isolate.

Perf checklist

Flutter DevTools Performance
const widgets where possible
ListView.builder
Compress images
Profile release builds too

101. Building Android APK in Flutter

Prefer app bundles for Play Store; APKs for direct testing.

Build commands

flutter build apk --release
flutter build appbundle --release

102. Building iOS App in Flutter

Configure signing teams, bundle IDs, and capabilities in Xcode.

iOS build tip

macOS + Xcode required
Signing & capabilities
flutter build ipa

103. App Signing and Release in Flutter

Protect keystores; losing them blocks app updates on stores.

Signing tip

Android keystore + key.properties
iOS certs via Xcode/Apple Developer
Backup keys securely

104. Google Play Store Deployment

Use internal/closed testing before production rollout.

Play checklist

App bundle upload
Store listing + screenshots
Content rating
Privacy policy
Staged rollout

105. Apple App Store Deployment

Prepare screenshots, privacy labels, and review notes for Apple review.

App Store checklist

TestFlight beta
App Store Connect metadata
Privacy nutrition labels
Submit for review

106. Flutter Interview Questions

Be ready to explain widgets, state management trade-offs, async, and rebuild performance.

Sample Q&A

Q: Stateless vs Stateful?
A: Stateful has mutable State + setState; Stateless is config-only.

Q: Why keys?
A: Preserve element identity across rebuilds/reorders.

Q: const widgets?
A: Can skip rebuilds when config is compile-time constant.

107. Final Project – Complete Flutter Mobile Application

Ship a production-shaped app: splash + auth, home feed, details, form create/edit, offline cache, theming, and release builds for Android (and iOS if available). Document architecture and test the critical path.

  1. Define the app idea and screens.
  2. Implement auth + data layer.
  3. Polish UI states and theming.
  4. Test and build a release artifact.

Final project scope

1. App architecture (features/ + shared/)
2. Auth (Firebase or JWT API)
3. List/detail screens + pull-to-refresh
4. Create/update form with validation
5. State management (Provider/Riverpod/Bloc)
6. Local cache (Hive/SQLite/prefs)
7. Light/dark theme
8. Error/empty/loading UI
9. Unit + widget tests for core logic/UI
10. Release build + README

Suggested folder layout

lib/
  main.dart
  app.dart
  features/auth/
  features/home/
  features/details/
  shared/widgets/
  shared/services/

Conclusion

You now have a full Flutter path: Dart, widgets, navigation, state management, backend and device integrations, testing, and release. Finish the final mobile app project to turn the lessons into a portfolio-ready application.

Keep reading

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