WebRTC Android Application

This project is a modern Android application that combines real-time video calling and messaging features. It is developed using WebRTC technology and integrated with Firebase.

🚀 Features

• Real-time Video Calling: Peer-to-peer video calls using WebRTC technology
• Messaging: Real-time messaging with Firebase Realtime Database
• Modern UI: Modern user interface developed with Jetpack Compose
• Dependency Injection: Clean code architecture with Hilt
• Material Design 3: Current design standards

🛠️ Technologies Used

Core Technologies

• Kotlin - Programming language
• Android SDK - Platform APIs
• Jetpack Compose - Modern UI framework
• Material Design 3 - Design system

WebRTC & Communication

• WebRTC (com.mesibo.api:webrtc:1.0.5) - Real-time communication
• Firebase Realtime Database - Real-time data synchronization
• Firebase Analytics - Usage analytics

Architecture & Dependencies

• Hilt - Dependency injection
• ViewModel - UI state management
• Gson - JSON parsing
• Compose Icons - Icon libraries (Eva Icons, Feather)

Build Tools

• Gradle - Build system
• Android Gradle Plugin 8.11.0
• Kotlin 2.0.21

📱 Screenshots

Device 1 Chat Screen	Device 2 Chat Screen
Device 1 is in Looking For Match State	Device 2 After Connection

🏗️ Project Structure

app/src/main/java/com/example/webrtc_android/
├── di/                    # Dependency injection
│   └── AppModule.kt
├── remote/               # Firebase client and data models
│   ├── FirebaseClient.kt
│   └── StatusDataModel.kt
├── ui/                   # UI components and screens
│   ├── components/
│   │   ├── ChatSection.kt
│   │   └── SurfaceViewRenderer.kt
│   ├── screens/
│   │   ├── CameraScreen.kt
│   │   └── ChatScreen.kt
│   ├── theme/
│   │   ├── Color.kt
│   │   ├── Theme.kt
│   │   └── Type.kt
│   └── viewmodel/
│       └── MainViewModel.kt
├── utils/                # Utility classes
│   ├── ChatItems.kt
│   ├── FirebaseFieldNames.kt
│   ├── MatchState.kt
│   ├── SharedPrefHelper.kt
│   ├── SignalDataModel.kt
│   └── ValueEventListener.kt
└── webrtc/              # WebRTC implementation
    ├── PeerObserver.kt
    ├── RTCAudioManager.kt
    ├── RTCClient.kt
    ├── RTCClientImpl.kt
    ├── SDPObserver.kt
    └── WebRTCFactory.kt

🚀 Installation

Requirements

• Android Studio Hedgehog | 2023.1.1 or higher
• Android SDK 36
• Minimum SDK: 24 (Android 7.0)
• Target SDK: 36 (Android 14)

Steps

1. Clone the repository

   git clone https://github.com/cevizenes/WebRTC-Android.git
   cd WebRTC-Android

2. Firebase configuration

   • Create a new project in Firebase Console
   • Add google-services.json file to the app/ folder
   • Enable Realtime Database

3. Build the project

   ./gradlew build

4. Run the application

   ./gradlew installDebug

🔧 Configuration

Firebase Setup

1. Create a project in Firebase Console
2. Add Android application
3. Download google-services.json file
4. Configure Realtime Database rules

WebRTC Configuration

• You can configure necessary settings for STUN/TURN servers in RTCClient.kt file
• Firebase Realtime Database is used for signaling server

📋 Feature Details

Video Calling

• Peer-to-peer connection
• Automatic camera/microphone management
• Screen sharing support
• Connection status indicator

Messaging

• Real-time message sending
• Message status tracking
• Media sharing
• Read receipts