Android & Kotlin Patterns

Expert guidance on modern Android development covering architecture, Jetpack Compose, coroutines, Room, networking, navigation, dependency injection, testing, accessibility, and permissions.

Rules

See rules index for detailed patterns organized by:

• Architecture — Clean Architecture layers, unidirectional data flow, ViewModel purity
• Accessibility — Content descriptions, touch targets, heading semantics
• Concurrency — Structured coroutines, lifecycle-aware Flow, dispatcher usage
• Compose — State hoisting, remember, side effects, animations, theming, recomposition
• Persistence — Room entities, migrations, reactive queries
• Networking — Retrofit and Ktor configuration, error handling
• Navigation — Type-safe args, deep links, single-activity architecture
• Dependency Injection — Hilt scoping, assisted injection
• Testing — Compose semantics testing, coroutine dispatchers, Turbine
• Permissions — Runtime requests, rationale handling, permission state