Android Development Guidelines

Kotlin and Jetpack Compose Fundamentals

• •Use Kotlin 1.9+ with modern language features
• •Prefer Jetpack Compose for new UI components
• •Use Compose state management (@State, @Remember, @ViewModel)
• •Leverage Kotlin Coroutines for asynchronous operations
• •Use Kotlin Flow for reactive streams
• •Follow Kotlin coding conventions

Android Architecture Patterns

• •MVVM: Use with ViewModel and LiveData/StateFlow
• •Clean Architecture: Separate data, domain, and presentation layers
• •Repository Pattern: Abstract data sources
• •Implement dependency injection with Hilt
• •Separate business logic from UI code
• •Use interfaces for abstraction and testing

Android Jetpack Libraries

• •Room: Use for local database persistence
• •WorkManager: Use for background tasks
• •Navigation Component: Use for app navigation
• •DataStore: Use for key-value storage
• •Paging 3: Use for paginated data
• •CameraX: Use for camera functionality
• •BiometricPrompt: Use for biometric authentication
• •AppCompat: Use for backward compatibility

Material Design 3 Guidelines

• •Follow Material Design 3 principles
• •Use Material 3 components and theming
• •Implement proper elevation and shadows
• •Use Material Icons for consistency
• •Support different screen sizes and densities
• •Implement responsive layouts
• •Support Dark Theme properly
• •Use motion and animations appropriately

Android Permissions and Security

• •Request runtime permissions properly
• •Use permission best practices
• •Implement proper certificate pinning
• •Use Android Keystore for secure storage
• •Follow security best practices
• •Implement proper network security configuration
• •Use ProGuard/R8 for code obfuscation

Google Play Store Submission

• •Follow Google Play Developer Policies
• •Prepare app bundle (AAB) for upload
• •Prepare screenshots and store listing
• •Test with Internal and Closed Testing tracks
• •Handle app updates and versioning properly
• •Comply with privacy and data collection policies
• •Use Play Console for distribution and analytics

Android Performance Optimization

• •Use Android Profiler for performance analysis
• •Optimize APK/AAB size with code shrinking
• •Use leak detection tools (LeakCanary)
• •Implement proper image loading and caching
• •Optimize network requests and data transfer
• •Reduce app startup time
• •Use efficient layouts and view binding
• •Optimize battery usage

Android Testing Frameworks

• •JUnit: Use for unit tests
• •Espresso: Use for UI tests
• •Compose Testing: Use for Compose UI tests
• •Robolectric: Use for local unit tests
• •MockK: Use for mocking in tests
• •Truth: Use for assertion libraries
• •Write testable code with dependency injection