QuickChat 💬

A real-time Android chat application built with Kotlin and Firebase, featuring modern Android architecture patterns.

Features

• 💬 Real-time messaging with Firebase Firestore
• 🔐 Email/Password authentication
• 🟢 Online / Last seen status indicator
• 🖼️ Edit or remove profile picture
• 🏗️ MVVM Architecture with Dagger Hilt

Screenshots

Login	Messages	Chat

Tech Stack

• Language: Kotlin
• Architecture: MVVM (Model-View-ViewModel)
• Backend: Firebase Firestore, Firebase Auth, FCM
• Dependency Injection: Dagger Hilt
• Async: Kotlin Coroutines & LiveData
• Networking: Retrofit
• Min SDK: 21 | Target SDK: 31

Setup

1. Clone the repo
2. Create a Firebase project at console.firebase.google.com
3. Enable Authentication (Email/Password) and Firestore
4. Download google-services.json and place it in the app/ folder
5. Build and run in Android Studio

Architecture

This app follows MVVM clean architecture:

• UI Layer — Fragments + ViewBinding
• ViewModel Layer — Business logic with Coroutines
• Repository Layer — Firebase data operations
• DI — Dagger Hilt for dependency injection