DailyCart

A Modern Grocery Delivery Android App built with Kotlin

DailyCart is a professional e-commerce application designed for rapid grocery delivery, featuring real-time search, category-based filtering, and a robust order tracking system—built using modern Android development practices.

Focused on clean architecture, local data persistence, and scalable UI patterns, this project demonstrates practical Android app development for B.Tech academic and professional portfolios.

Features • Architecture • Tech Stack • Getting Started

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Project Overview

Many e-commerce applications fail to maintain data integrity when product details change over time. DailyCart addresses this by implementing professional data management and a high-performance UI matching a modern brand identity.

Key Objectives:

• Fast Navigation: A clean, Green-Orange themed UI matching the brand logo.
• Data Integrity: Order history that preserves exact prices and addresses at the time of purchase via JSON serialization.
• Intelligent Search: Real-time filtering with custom empty-state handling.

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Architecture & Flow

The app follows the MVVM (Model-View-ViewModel) pattern to ensure scalability and ease of testing, which is critical for complex backend-integrated systems.

flowchart TD
    A[User Interface - Fragment] --> B[ViewModel]
    B --> C[Repository]
    C --> D[Local DB - Room]
    D --> C
    C --> E[Static Data - Constants]
    B --> A

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Architectural Highlights

• Repository Pattern: Acts as a single source of truth for both static constants and Room database data.
• Reactive UI: Uses LiveData to ensure the UI updates instantly when products are filtered or added to the cart.
• Type-Safe Navigation: Implementation of the Jetpack Navigation Component for structured fragment transitions.

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Key Features

• Real-time Search: Instant filtering of the master product list with dedicated "No Results" iconography.
• Category Browsing: Thematic exploration for Vegetables, Fruits, Dairy, Snacks, and more.
• Custom Splash Screen: A professional entry point featuring smooth fade-in and scale animations.
• Bill Summary: A detailed breakdown of costs including item totals, delivery charges, and grand totals.

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Tech Stack

• Language: Kotlin
• Local Database: Room Persistence Library with JSON TypeConverters
• Architecture: MVVM with Coroutines for asynchronous operations
• Design: Material3 components with a custom brand color palette

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Author

Maksud Rahman

GitHub: https://github.com/iRahmanG