Counter - Kotlin Multiplatform Mobile App

This is a Kotlin Multiplatform project targeting Android and iOS, demonstrating a clean architecture approach to share business logic while leveraging platform-specific reactive programming patterns.

Architecture

The project uses a shared ViewModel architecture with platform-specific state management:

• Shared Business Logic: Common Kotlin code defines the core functionality through interfaces
• Platform-Specific State Management:
  • Android: Uses Kotlin StateFlow for reactive state updates
  • iOS: Uses Combine Publishers for reactive state updates

Key Components

• CounterViewModel: Shared business logic implementation
• CounterViewModelState: Interface that abstracts platform-specific state management
• Platform-specific implementations of CounterViewModelState:
  • Android: Uses StateFlow for reactive updates
  • iOS: Uses Combine Publisher for reactive updates

Benefits of This Architecture

1. Code Sharing: Core business logic is written once in Kotlin and shared across platforms
2. Platform-Native Feel: Each platform uses its preferred reactive programming paradigm
3. Clean Architecture: Clear separation between shared business logic and platform-specific implementations
4. Type Safety: Interface-based approach ensures type safety across platforms
5. Maintainability: Single source of truth for business logic while maintaining platform-specific best practices