kmp-patterns

Share business logic across Android, iOS, and desktop by using a Kotlin Multiplatform shared module skeleton that centralizes domain, data, and networking layers. This approach reduces cross-platform code duplication and ensures consistent behavior across all target platforms.

The expect/actual pattern in Kotlin Multiplatform defines common declarations in shared code using 'expect' and provides concrete implementations using 'actual' for platform-specific features. It is needed for platform-specific implementations like networking, persistence, and UI composition.

Scaffold a Kotlin Multiplatform project with Ktor networking and SQLDelight by using a project skeleton that integrates Ktor-based networking, SQLDelight for shared database access, Koin for dependency injection, and Compose Multiplatform UI tooling.

Yes, Compose Multiplatform unifies UI development across Android, iOS, and desktop. It is included in the shared module architecture alongside Ktor networking, SQLDelight, and Koin dependency injection to centralize both logic and UI composition.

Kotlin Multiplatform works for building cross-platform features like authentication, data models, and API clients. The shared module architecture centralizes this logic, using Ktor for API networking and Koin for dependency injection across all platforms.

A shared module for cross-platform Kotlin development requires writing expect/actual declarations for platform-specific features, which adds boilerplate. While it unifies logic and UI, you must still maintain platform-specific implementations for features that cannot be fully shared.