Android Development with Jetpack Compose

A practical guide to building modern Android apps — from project setup to architecture, networking, storage, security, and a full workshop.

Target version: Kotlin 2.4.x with the K2 compiler, Jetpack Compose BOM 2025.06.x, Material 3, Ktor 3.x, Room 2.7.x, and Koin 4.x.

Objectives

After completing this guide, you will be able to:

• Create and run an Android project and understand its structure
• Explain the Activity and Fragment lifecycle
• Use explicit and implicit Intents and Navigation routes
• Build UI with Compose composables and modifiers
• Manage state and recomposition with state hoisting
• Navigate between screens in Compose
• Render lists with Lazy layouts
• Apply Material 3 theming and dark mode
• Use ViewModel and StateFlow for UI state
• Apply the repository pattern and Clean Architecture layers
• Make network calls with Ktor and kotlinx.serialization
• Store data with Room and DataStore
• Set up dependency injection with Koin
• Apply Android security: encryption, biometrics, network config, R8
• Build a complete Task Manager app in the workshop

Contents

Section	Topic	File
Android Basics	Android Project Setup	01-android-basics/01-android-project-setup.md
	Activity and Fragment Lifecycle	01-android-basics/02-activity-fragment-lifecycle.md
	Intents and Navigation	01-android-basics/03-intents-and-navigation.md
Jetpack Compose	Composables and Modifiers	02-jetpack-compose/04-composables-and-modifiers.md
	State and Recomposition	02-jetpack-compose/05-state-and-recomposition.md
	Navigation in Compose	02-jetpack-compose/06-navigation-in-compose.md
	Lists with Lazy Layouts	02-jetpack-compose/07-lists-with-lazy-layouts.md
	Theming with Material 3	02-jetpack-compose/08-theming-material3.md
Architecture	ViewModel and StateFlow	03-architecture/09-viewmodel-and-stateflow.md
	Repository Pattern	03-architecture/10-repository-pattern.md
	Networking with Ktor	03-architecture/11-networking-with-ktor.md
	Local Storage: Room and DataStore	03-architecture/12-local-storage-room-datastore.md
	Koin DI for Android	03-architecture/13-koin-di-android.md
Security	Android Security	04-security/14-android-security.md
Workshop	Build a Task Manager App	99-workshop/01-compose-app-workshop.md