🛍️ E-Commerce Android App

A modern, scalable, and cleanly architected E-Commerce Android Application built with MVVM, Kotlin Flow, Live Data and Material 3, showcasing best Android development practices.

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🌟 Introduction

This project demonstrates a fully functional e-commerce mobile app built using Kotlin and MVVM architecture.
It fetches real product data from the Fake Store API and presents it using Jetpack libraries and Material 3 UI components.

The goal of this project is to showcase:

• Clean architecture principles
• Reactive data handling using Kotlin Flow and LiveData
• Local caching and dependency injection
• Elegant, modern Android UI with Material 3

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📸 Screenshots

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🧰 Tech Stack

Below is a detailed overview of the technologies and libraries used in this project 👇

Component	Technology / Library	Description
🧠 Language	Kotlin	The primary language used to build the app — concise, safe, and officially supported by Google for Android.
⚙️ Architecture	MVVM (Model–View–ViewModel)	Separates UI, business logic, and data layers to ensure maintainability, testability, and scalability.
🔄 Asynchronous Programming	Kotlin Coroutines & Kotlin Flow	Simplifies async tasks and provides reactive data streams for smooth UI updates.
🧩 LiveData & Lifecycle	LiveData & Lifecycle	Lifecycle-aware components to observe and update UI safely.
🗃️ Local Database	Room	Provides a robust abstraction layer over SQLite for local data caching.
🌐 Networking	Retrofit & OkHttp	Handles all network operations and integrates Fake Store API seamlessly with error handling and interceptors.
🔑 Dependency Injection	Dagger Hilt	Simplifies dependency management and reduces boilerplate code.
🧭 Navigation	Jetpack Navigation Component	Provides type-safe, centralized navigation between app destinations.
🎨 UI / Design System	Material 3 & AndroidX Components	Ensures a clean, modern look consistent with the latest design trends.
🖼️ Image Loading	Glide	Efficiently loads and caches product images.
📦 Serialization	Gson	Handles JSON parsing for API requests and responses.
🪵 Logging	OkHttp Logging Interceptor	Logs API request/response data for easy debugging.

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🏗️ Architecture & Design

This project is structured using MVVM (Model–View–ViewModel) combined with Clean Architecture principles to ensure scalability, testability, and separation of concerns.

📂 Data Layer

• Responsible for data retrieval from both remote and local sources.
• Uses Retrofit to communicate with the Fake Store API and Room for caching data locally.
• Includes:
  • Repositories – abstract data access logic
  • Data Sources – manage API and database calls
  • DTOs & Mappers – convert API data models to domain entities

⚙️ Domain Layer

• Contains Use Cases (Interactors) and business logic.
• Acts as a bridge between Data and Presentation layers — ensuring the UI remains independent from data sources.
• Maintains a clean contract by defining repository interfaces implemented in the data layer.

🎨 Presentation Layer

• Responsible for all UI-related logic.
• Uses ViewModels that expose data as Flow or LiveData to Activities/Fragments.
• Employs Material 3 components, RecyclerViews, and Navigation Component for seamless and responsive design.
• Handles state management (Loading, Success, Error) efficiently using sealed classes.

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🚀 Features

✅ Modern MVVM + Clean Architecture implementation
✅ Fetch and display products from Fake Store API
✅ Product detail view with full info and images
✅ Add to cart and basic cart management
✅ Offline caching using Room
✅ Reactive UI updates with Kotlin Flow
✅ Elegant Material 3 interface
✅ Error handling and loading states
✅ Modular, scalable project structure

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💡 Future Improvements

🔹 Implement pagination for product listings
🔹 Enhance cart functionality (quantity updates, persistence)
🔹 Implement checkout and order tracking flow
🔹 Integrate a real backend API
🔹 Add animations and motion transitions for better UX
🔹 Write unit & UI tests for critical modules

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🧩 Installation & Setup

1. Clone this repository

   git clone https://github.com/harshparate2001/EcomStoreAndroid.git

2. Open the project in Android Studio (Giraffe or newer)
3. Let Gradle sync automatically
4. Connect an Android device or start an emulator
5. Run the app 🚀

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🧑‍💻 About the Developer

👨‍💻 Harsh Parate
Passionate Android Developer focused on building high-performance, elegant, and scalable mobile apps using modern Android architecture.

📫 Connect with me:

• GitHub
• LinkedIn

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📦 Download

📲 Download Latest Release (APK)

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⭐ If you like this project, don’t forget to give it a star! ⭐