Android Kotlin Development
Table of Contents
Overview
Build robust native Android applications using Kotlin with modern architecture patterns, Jetpack libraries, and Compose for declarative UI.
When to Use
- Creating native Android applications with best practices
- Using Kotlin for type-safe development
- Implementing MVVM architecture with Jetpack
- Building modern UIs with Jetpack Compose
- Integrating with Android platform APIs
Quick Start
Minimal working example:
kotlin// Models data class User( val id: String, val name: String, val email: String, val avatarUrl: String? = null ) data class Item( val id: String, val title: String, val description: String, val imageUrl: String? = null, val price: Double ) // API Service with Retrofit interface ApiService { @GET("/users/{id}") suspend fun getUser(@Path("id") userId: String): User @PUT("/users/{id}") suspend fun updateUser( @Path("id") userId: String, @Body user: User // ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Models & API Service | Models & API Service |
| MVVM ViewModels with Jetpack | MVVM ViewModels with Jetpack |
| Jetpack Compose UI | Jetpack Compose UI |
Best Practices
✅ DO
- Use Kotlin for all new Android code
- Implement MVVM with Jetpack libraries
- Use Jetpack Compose for UI development
- Leverage coroutines for async operations
- Use Room for local data persistence
- Implement proper error handling
- Use Hilt for dependency injection
- Use StateFlow for reactive state
- Test on multiple device types
- Follow Android design guidelines
❌ DON'T
- Store tokens in SharedPreferences
- Make network calls on main thread
- Ignore lifecycle management
- Skip null safety checks
- Hardcode strings and resources
- Ignore configuration changes
- Store passwords in code
- Deploy without device testing
- Use deprecated APIs
- Accumulate memory leaks
