CameraX App

A modern Android application that demonstrates the power and simplicity of CameraX API for camera operations. This app showcases how to implement a full-featured camera application with photo capture, video recording, and image analysis capabilities.

🚀 Features

• 📸 Photo Capture: Take high-quality photos and save them to device storage
• 🎥 Video Recording: Record videos with audio support
• 🔍 Image Analysis: Real-time image analysis with luminosity calculation
• 📱 Modern UI: Clean and intuitive user interface with Material Design 3
• 🔒 Permission Handling: Robust permission management for camera and storage access
• 📦 MediaStore Integration: Seamless integration with Android's MediaStore for media management

🏗️ Architecture

The app follows a clean architecture pattern with the following components:

graph TD
    A[MainActivity] --> B[CameraX Components]
    B --> C[Preview]
    B --> D[ImageCapture]
    B --> E[VideoCapture]
    B --> F[ImageAnalysis]
    C --> G[CameraProvider]
    D --> G
    E --> G
    F --> G
    G --> H[Camera Hardware]

Loading

Component Flow

sequenceDiagram
    participant User
    participant MainActivity
    participant CameraX
    participant MediaStore
    
    User->>MainActivity: Launch App
    MainActivity->>MainActivity: Check Permissions
    MainActivity->>CameraX: Initialize Camera
    CameraX->>MainActivity: Camera Ready
    
    alt Take Photo
        User->>MainActivity: Click Photo Button
        MainActivity->>CameraX: Capture Image
        CameraX->>MediaStore: Save Photo
        MediaStore->>MainActivity: Photo Saved
    else Record Video
        User->>MainActivity: Click Video Button
        MainActivity->>CameraX: Start Recording
        User->>MainActivity: Click Stop Button
        MainActivity->>CameraX: Stop Recording
        CameraX->>MediaStore: Save Video
        MediaStore->>MainActivity: Video Saved
    end

Loading

🛠️ Technical Implementation

Key Components

1. CameraX Integration

   • Uses CameraX 1.2.2 for modern camera operations
   • Implements Preview, ImageCapture, VideoCapture, and ImageAnalysis use cases
   • Handles camera lifecycle management

2. Permission Management

   • Runtime permission handling for camera and storage access
   • Graceful fallback for permission denials
   • Support for Android 10+ scoped storage

3. Media Storage

   • Integration with MediaStore API
   • Organized storage structure for photos and videos
   • Proper file naming and metadata management

Dependencies

dependencies {
    val cameraXversion = "1.2.2"
    implementation("androidx.camera:camera-core:${cameraXversion}")
    implementation("androidx.camera:camera-camera2:${cameraXversion}")
    implementation("androidx.camera:camera-lifecycle:${cameraXversion}")
    implementation("androidx.camera:camera-video:${cameraXversion}")
    implementation("androidx.camera:camera-view:${cameraXversion}")
    implementation("androidx.camera:camera-extensions:${cameraXversion}")
}

📱 UI/UX Design

The app features a clean and intuitive interface with:

• Full-screen camera preview
• Large, easily accessible capture buttons
• Clear visual feedback for recording state
• Material Design 3 theming support
• Dark mode compatibility

🔄 State Management

stateDiagram-v2
    [*] --> Initializing
    Initializing --> Ready: Permissions Granted
    Initializing --> PermissionDenied: Permissions Denied
    Ready --> TakingPhoto: Photo Button Pressed
    Ready --> RecordingVideo: Video Button Pressed
    TakingPhoto --> Ready: Photo Captured
    RecordingVideo --> Ready: Video Stopped
    PermissionDenied --> [*]: App Closed

Loading

🎯 Future Improvements

1. Enhanced Features

   • Add filters and effects
   • Implement HDR mode
   • Add slow-motion video support
   • Implement portrait mode

2. UI Enhancements

   • Add camera controls (flash, timer, etc.)
   • Implement gallery view
   • Add photo/video editing capabilities

3. Performance Optimizations

   • Implement image compression
   • Add background processing
   • Optimize memory usage

📝 Learning Resources

• CameraX Documentation
• Android MediaStore Guide
• Material Design 3

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

This project is licensed under the MIT License.