IntermediateMobile
Panduan Clean Architecture dan BLoC State Management di Flutter
Struktur folder modular, pemisahan layer Data-Domain-Presentation, dan state management reactive di Flutter.
Mobile Engineering Team18 menit baca21 Oktober 20264 views
#Flutter#Dart#BLoC#Clean Architecture#Mobile
Arsitektur Aplikasi Skala Enterprise
Dalam membangun aplikasi Flutter berukuran besar, menumpuk logic di dalam widget adalah anti-pattern yang berbahaya. Clean Architecture membagi kode ke dalam tiga layer independen:
- Domain Layer: Berisi Entity dan Use Cases murni (tanpa dependensi framework Flutter).
- Data Layer: Berisi DataSource (Remote/Local API), Model JSON serializer, dan Implementasi Repository.
- Presentation Layer: Berisi BLoC (Events & States) dan Widget UI responsif.
Struktur Proyek
lib/
├── core/
│ ├── error/
│ ├── network/
│ └── theme/
└── features/
└── authentication/
├── data/
│ ├── datasources/
│ ├── models/
│ └── repositories/
├── domain/
│ ├── entities/
│ ├── repositories/
│ └── usecases/
└── presentation/
├── bloc/
└── pages/Mendefinisikan BLoC Event & State
Dengan pattern BLoC, perubahan UI sepenuhnya dipicu oleh State:
// auth_event.dart
abstract class AuthEvent extends Equatable {
const AuthEvent();
}
class LoginSubmitted extends AuthEvent {
final String email;
final String password;
const LoginSubmitted({required this.email, required this.password});
@override
List<Object?> get props => [email, password];
}
// auth_state.dart
abstract class AuthState extends Equatable {
const AuthState();
}
class AuthInitial extends AuthState {}
class AuthLoading extends AuthState {}
class AuthSuccess extends AuthState {
final User user;
const AuthSuccess(this.user);
}
class AuthFailure extends AuthState {
final String message;
const AuthFailure(this.message);
}Kesimpulan
Dengan struktur ini, tim developer dapat bekerja secara paralel tanpa merge conflict pada layer UI dan Business Logic.
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