Does it support type-safe preferences?

Yes, it utilizes a sealed class approach for DataStore keys to ensure type-safety and easier migration from SharedPreferences.

Is it compatible with Hilt dependency injection?

Yes, it includes Hilt DatabaseModule implementation examples to ensure the data layer is properly integrated into your DI graph.

Does this skill help with Room database migrations?

Yes, it provides specific implementation patterns for version management, exportSchema settings, and concrete migration examples (e.g., MIGRATION_3_4).

Can I use this to sync local data with remote APIs?

Absolutely. It includes patterns for Repository design that integrate Room persistence with Retrofit network layers and Paging 3.

Are testing examples included for the data layer?

Yes, the skill provides specific test patterns for Room in-memory databases, DataStore repositories, and Unit Testing with MockK.

Android Data Layer Architect

Name: Android Data Layer Architect
Author: xtone

byxtone

•

Mobile Development

Implements production-grade Android data layers using Room Database, DataStore, and clean Repository architecture patterns.

This skill serves as a comprehensive guide for architecting the data layer in Android applications, focusing on Room Database, DataStore, and Repository design. It leverages production-proven patterns to help developers implement entities, DAOs, and complex migrations alongside type-safe preference management. By emphasizing clean architecture principles, it provides structured guidance on integrating remote and local data sources, implementing robust caching strategies, and ensuring high testability through Hilt DI and MockK. It is an essential companion for building scalable, offline-capable mobile applications that follow modern Android development best practices.

Key Features

01Type-safe Preferences DataStore implementation using sealed classes

02Advanced error handling strategies using Kotlin Result and Flow

03Ready-to-use testing patterns for in-memory databases and repositories

04Comprehensive Room Database patterns for entities, DAOs, and migrations

053 GitHub stars

06Unified Repository design for local/remote data synchronization and caching

Use Cases

01Building an offline-first mobile app with complex local persistence requirements

02Designing a clean repository layer with Hilt dependency injection and robust error handling

03Migrating legacy SharedPreferences to modern, reactive DataStore implementations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add xtone/ai_development_tools android-data-layer

For use in Claude.ai and ChatGPT

Download Skill