Advanced Android Architecture
Advanced Android concepts help you build scalable, maintainable, and production-ready applications. These tools and patterns are widely used in real-world apps and are essential for modern Android development.
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Advanced Android concepts help you build scalable, maintainable, and production-ready applications. These tools and patterns are widely used in real-world apps and are essential for modern Android development.
MVVM Architecture
MVVM (Model–View–ViewModel) is a design pattern that separates business logic from UI.
Core components
🔸 Model – Handles data and business logic
🔸 View – UI layer (Activity/Fragment)
🔸 ViewModel – Manages UI-related data
Why MVVM is important
🔸 Clean separation of concerns
🔸 Easier testing
🔸 Better code maintainability
LiveData & ViewModel
ViewModel stores and manages UI-related data in a lifecycle-aware way.
LiveData is an observable data holder that updates UI automatically.
Key benefits
🔸 Survives configuration changes
🔸 Prevents memory leaks
🔸 Automatically updates UI when data changes
Common use cases
🔸 API response handling
🔸 Database observation
🔸 UI state management
Dependency Injection (Hilt / Dagger)
Dependency Injection (DI) provides objects to a class instead of creating them manually.
Why DI is used
🔸 Reduces tight coupling
🔸 Improves testability
🔸 Cleaner and modular code
Hilt
🔸 Built on top of Dagger
🔸 Simplifies DI setup
🔸 Recommended by Google
Use cases
🔸 Injecting ViewModels
🔸 Providing repositories
🔸 Managing singletons
Background Tasks (WorkManager)
WorkManager is used to run deferrable background tasks that must be executed reliably.
Key features
🔸 Runs even after app restart
🔸 Supports constraints (network, charging)
🔸 Handles retries automatically
Common use cases
🔸 Data syncing
🔸 Uploading logs
🔸 Periodic background jobs
Push Notifications (Firebase)
Push Notifications allow apps to send messages to users even when the app is closed.
Firebase Cloud Messaging (FCM)
🔸 Free and reliable
🔸 Supports topic and device-based messages
🔸 Works across Android versions
Use cases
🔸 Chat messages
🔸 Order updates
🔸 Promotional alerts
Benefits
🔸 Increases user engagement
🔸 Real-time communication
🔸 Easy backend integration
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