🚀 Modularization Sample - Advanced Android Application

A comprehensive Android application demonstrating modern modularization patterns with MVI + Clean Architecture, featuring advanced media handling, Room database integration, and sophisticated permission management.

📋 Table of Contents

• Overview
• Architecture
• Module Structure
• Features
• Technology Stack
• Getting Started
• Contributing

🎯 Overview

This project showcases a production-ready Android application built with modern development practices, featuring:

• Complete Modularization: Each feature is independently developed and testable
• Clean Architecture: Clear separation of concerns with Data, Domain, and Presentation layers
• MVI Pattern: Model-View-Intent architecture for predictable state management
• Advanced Media Handling: MediaStore integration with zoomable images and ExoPlayer videos
• Room Database: Local storage for favorites with proper data management
• Permission Management: Comprehensive permission handling for Android 6-16
• Modern UI: Material Design 3 with ViewBinding
• Type-Safe Navigation: Jetpack Navigation with compile-time safety

🏗️ Architecture

Clean Architecture Layers

┌─────────────────────────────────────────────────────────────────┐
│                    Presentation Layer                           │
│  ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌────────────┐ │
│  │   Images    │ │   Videos    │ │ Favourites  │ │ Settings   │ │
│  │   Feature   │ │   Feature   │ │   Feature   │ │   Feature  │ │
│  └─────────────┘ └─────────────┘ └─────────────┘ └────────────┘ │
└─────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────┐
│                      Domain Layer                               │
│  ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌────────────┐ │
│  │   Images    │ │   Videos    │ │ Favourites  │ │ Settings   │ │
│  │   Domain    │ │   Domain    │ │   Domain    │ │   Domain   │ │
│  └─────────────┘ └─────────────┘ └─────────────┘ └────────────┘ │
└─────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────┐
│                       Data Layer                                │
│  ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌────────────┐ │
│  │   Images    │ │   Videos    │ │ Favourites  │ │ Settings   │ │
│  │    Data     │ │    Data     │ │    Data     │ │    Data    │ │
│  └─────────────┘ └─────────────┘ └─────────────┘ └────────────┘ │
└─────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────┐
│                      Core Modules                               │
│  ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌────────────┐ │
│  │    Core     │ │   Database  │ │ MediaStore  │ │ Navigation │ │
│  │   (Common)  │ │   (Room)    │ │   (Media)   │ │ (Abstract) │ │
│  └─────────────┘ └─────────────┘ └─────────────┘ └────────────┘ │
│  ┌─────────────┐                                                │
│  │   Theme     │                                                │
│  │ (Styling)   │                                                │
│  └─────────────┘                                                │
└─────────────────────────────────────────────────────────────────┘

MVI Pattern Implementation

The application follows the Model-View-Intent (MVI) pattern for predictable state management:

• Intent: User actions and system events
• Model: Immutable state representing the UI
• View: Reactive UI that renders the current state

User Action → Intent → ViewModel → State → UI Update

📦 Module Structure

ModularizationSample/
├── :core/                     # Common utilities and base classes
├── :core:database/            # Room database setup and entities
├── :core:mediastore/         # MediaStore API wrapper and permissions
├── :core:navigation/          # Navigation abstraction and interfaces
├── :core:theme/               # Theme and styling resources
│
├── :data:images/              # Images data layer
├── :domain:images/            # Images domain layer  
├── :feature:images/           # Images presentation layer
│
├── :data:videos/              # Videos data layer
├── :domain:videos/            # Videos domain layer
├── :feature:videos/           # Videos presentation layer
│
├── :data:favourites/          # Favourites data layer (Room)
├── :domain:favourites/        # Favourites domain layer
├── :feature:favourites/       # Favourites presentation layer
│
├── :data:settings/            # Settings data layer
├── :domain:settings/          # Settings domain layer
├── :feature:settings/         # Settings presentation layer
│
├── :data:language/            # Language data layer
├── :domain:language/          # Language domain layer
├── :feature:language/         # Language presentation layer
│
├── :data:onboarding/          # Onboarding data layer
├── :domain:onboarding/        # Onboarding domain layer
├── :feature:onboarding/       # Onboarding presentation layer
│
├── :feature:entrance/         # Entrance screen
├── :feature:dashboard/        # Dashboard with 4 bottom navigation items
├── :feature:media-detail/     # Media detail screen (Images/Videos)
│
└── :app/                      # Main app module

✨ Features

🎯 Core Features

• Entrance Screen: App entry point with splash/loading
• Language Selection: Multi-language support with persistence
• Onboarding Flow: User onboarding experience
• Dashboard: Main screen with 4 bottom navigation tabs
• Media Gallery: Images and Videos from MediaStore
• Favourites: Local storage with Room database
• Settings: App configuration and preferences

🖼️ Media Features

• Image Gallery:

  • MediaStore integration
  • Favourite toggle functionality
  • Zoomable image viewer with PhotoView
  • Memory-optimized loading

• Video Gallery:

  • MediaStore integration
  • Favourite toggle functionality
  • ExoPlayer with custom controls
  • Advanced video playback features

• Media Detail Screen:

  • Zoomable image viewer for images
  • ExoPlayer for video playback
  • Favourite toggle
  • Media information display

⭐ Favourites System

• Room Database: Local storage for favourites
• Toggle Functionality: Add/remove favourites from any media
• Favourites Screen: Dedicated screen showing all favourites
• Real-time Updates: Live updates across all screens
• Data Persistence: Favourites persist across app restarts

🔐 Permission Management

• Android 6-16 Support: Comprehensive permission handling
• Limited Access Warning: Android 14+ limited access detection
• Settings Navigation: Direct navigation to app settings
• Permission Banner: Visual feedback for permission status
• Graceful Degradation: App functionality with limited permissions

🎨 UI/UX Features

• Material Design 3: Modern design system
• ViewBinding: Type-safe view binding
• Type-Safe Navigation: Compile-time navigation safety
• Responsive Design: Adaptive layouts for different screen sizes
• Dark/Light Theme: Theme support
• Smooth Animations: Fluid user interactions

🛠️ Technology Stack

Architecture Components

• MVI Pattern: Model-View-Intent architecture for predictable state management
• Clean Architecture: Separation of concerns
• Repository Pattern: Data abstraction layer
• Use Cases: Business logic encapsulation

Core Libraries

• Kotlin: Modern programming language
• ViewBinding: Type-safe view binding
• Jetpack Navigation: Type-safe navigation
• Room Database: Local data persistence
• Koin: Dependency injection framework
• Coroutines & Flow: Asynchronous programming

Media Libraries

• MediaStore API: System media access
• ExoPlayer: Advanced video playback
• PhotoView: Zoomable image viewer
• Glide: Image loading and caching

Permission & Security

• Accompanist Permissions: Permission handling
• Security Best Practices: Secure data handling
• Memory Management: Optimized resource usage

📱 Supported Android Versions

• Minimum SDK: Android 6.0 (API 23)
• Target SDK: Android 16 (API 35)
• Compile SDK: Android 16 (API 35)
• Tested Devices: Various screen sizes and Android versions

🔧 Development Environment

Prerequisites

• Android Studio Hedgehog or later
• JDK 17 or later
• Android SDK 35
• Kotlin 1.9.0 or later
• Gradle 8.0 or later

Setup Instructions

1. Clone the repository
2. Open in Android Studio
3. Sync Gradle files
4. Run the application

📄 License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request

📞 Support

For support and questions, please open an issue in the repository.

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Note: This project demonstrates advanced Android development practices and serves as a reference implementation for modularized applications with Clean Architecture and MVI pattern.