Day 10: Introduction to MVVM in Android: Master Modern App Architecture

📘 Introduction

If you want to build scalable, testable, and maintainable Android apps, understanding MVVM (Model-View-ViewModel) is essential. It’s the most recommended architecture pattern for modern Android development, especially when using Jetpack Compose or XML-based UIs.

🧱 What is MVVM in Android?

MVVM is a design pattern that helps organize your code into three core layers:

1. Model

• Handles data and business logic
• Example: Repositories, Room Database, Retrofit APIs

2. View

• The UI layer (Compose or XML)
• Observes StateFlow, LiveData, or State changes from ViewModel
• Doesn’t hold any business logic

3. ViewModel

• Acts as a middleman between Model and View
• Holds UI logic and exposes state
• Survives configuration changes (e.g., rotation)

⚙️ Benefits of MVVM

✅ Clear separation of concerns
✅ Easy to test ViewModel logic
✅ Clean, modular code
✅ Supports Jetpack tools (LiveData, ViewModel, StateFlow)

🧭 Continue Your Android Developer Journey

✅ Day 5: Activities & Intents

✅ Day 6: Android Lifecycle

✅ Day 7: Introduction to Jetpack Compose

✅ Day 8: Jetpack Compose Layouts 

✅ Day 9: Managing State in Jetpack Compose