Data layer Android Developers

Design Patterns and Architecture: The Android Developer Roadmap - Part 4

Building a Data Layer

Build an offline-first app

Improving Android App Architecture with Data Layer, by Kayvan Kaseb, Software Development

Android Architecture - Detailed Explanation - InterviewBit

UI layer Android Developers

Real-World Android by Tutorials, Chapter 4: Data Layer — Network

UI layer Android Developers

Send and sync data on Wear OS

Crash course on the Android UI layer - Part 1, by Manuel Vivo, Medium