A comprehensive retrospective of Android app architecture evolution from 2010 to 2025, tracing the journey from monolithic Activities through MVP, Clean Architecture, MVVM with Architecture Components, RxJava, Coroutines, and Jetpack Compose. The article advocates for MVI with State Machine as the current best practice for complex apps, emphasizing explicit state transitions, predictability, and testability. Each phase is illustrated with code examples showing how patterns like ViewModel, LiveData, Flow, and unidirectional data flow emerged to solve specific problems around lifecycle management, asynchronous operations, and UI consistency.
Table of contents
From “God Activities” to MVI with a State MachineWhy This MattersA High-Level TimelinePhase 1: The Pre-Architecture Era (2010–2013)Phase 2: MVP (2013–2016)🧱 Phase 3: Clean Architecture & Dependency Injection (2014–2017)🧩 Phase 4: MVVM & Android Architecture Components (2016–2019)Sort: