https://github.com/kashif-e/camerak
A camera library for Compose Multiplatform
https://github.com/kashif-e/camerak
android-library camerax compose-multiplatform compose-ui hacktoberfest kotlin-android kotlin-multiplatform
Last synced: 18 days ago
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A camera library for Compose Multiplatform
- Host: GitHub
- URL: https://github.com/kashif-e/camerak
- Owner: Kashif-E
- License: mit
- Created: 2024-09-14T17:36:19.000Z (8 months ago)
- Default Branch: main
- Last Pushed: 2025-03-26T21:54:30.000Z (about 1 month ago)
- Last Synced: 2025-03-28T09:01:39.212Z (about 1 month ago)
- Topics: android-library, camerax, compose-multiplatform, compose-ui, hacktoberfest, kotlin-android, kotlin-multiplatform
- Language: Kotlin
- Homepage:
- Size: 10.5 MB
- Stars: 259
- Watchers: 2
- Forks: 16
- Open Issues: 5
-
Metadata Files:
- Readme: README.MD
- License: LICENSE
Awesome Lists containing this project
README
# CameraK
## A Modern Camera Solution for Compose Multiplatform
CameraK is a comprehensive camera library designed specifically for Compose Multiplatform applications. It currently supports Android, iOS, and JVM platforms, with plans for expansion.
### Key Features
- 📱 **Cross-Platform Support**: Works on Android, iOS, and JVM
- 📸 **Camera Preview & Image Capture**: High-quality preview and capture capabilities
- 💾 **Image Processing**: Save images locally or process them as ByteArrays
- 🧩 **Plugin Architecture**: Extend functionality through modular plugins
- 🔍 **QR Scanning**: Quick and accurate QR code detection with dedicated plugin
- 📝 **OCR Support**: Text recognition capabilities with OCR plugin
## Installation
Add the core library to your project:
```kotlin
implementation("io.github.kashif-mehmood-km:camerak:+")
```
### Optional Plugins
Image saving plugin:
```kotlin
implementation("io.github.kashif-mehmood-km:image_saver_plugin:0.0.6")
```
QR scanning plugin:
```kotlin
implementation("io.github.kashif-mehmood-km:qr_scanner_plugin:0.0.7")
```
OCR plugin:
```kotlin
implementation("io.github.kashif-mehmood-km:ocr_plugin:0.0.2")
```
## Platform Setup
### Android
Add these permissions to your `AndroidManifest.xml`:
```xml
```
### iOS
Add these keys to your `Info.plist`:
```xml
NSCameraUsageDescription
Camera permission is required for the app to work.
NSPhotoLibraryUsageDescription
Photo Library permission is required for the app to work.
```
## Quick Start
### 1. Handle Permissions
```kotlin
// Initialize and check permissions
val cameraPermissionState = remember { mutableStateOf(permissions.hasCameraPermission()) }
val storagePermissionState = remember { mutableStateOf(permissions.hasStoragePermission()) }
// Request permissions if needed
if (!cameraPermissionState.value) {
permissions.RequestCameraPermission(
onGranted = { cameraPermissionState.value = true },
onDenied = { println("Camera Permission Denied") }
)
}
if (!storagePermissionState.value) {
permissions.RequestStoragePermission(
onGranted = { storagePermissionState.value = true },
onDenied = { println("Storage Permission Denied") }
)
}
```
### 2. Set Up the Camera Controller
```kotlin
val cameraController = remember { mutableStateOf(null) }
// Configure plugins if needed
val imageSaverPlugin = rememberImageSaverPlugin(
config = ImageSaverConfig(
isAutoSave = false,
prefix = "MyApp",
directory = Directory.PICTURES,
customFolderName = "MyAppPhotos" // Android only
)
)
val qrScannerPlugin = rememberQRScannerPlugin(coroutineScope = coroutineScope)
// Set up QR code detection
LaunchedEffect(Unit) {
qrScannerPlugin.getQrCodeFlow().distinctUntilChanged()
.collectLatest { qrCode ->
println("QR Code Detected: $qrCode")
qrScannerPlugin.pauseScanning()
}
}
```
### 3. Implement the Camera Preview
```kotlin
CameraPreview(
modifier = Modifier.fillMaxSize(),
cameraConfiguration = {
setCameraLens(CameraLens.BACK)
setFlashMode(FlashMode.OFF)
setImageFormat(ImageFormat.JPEG)
setDirectory(Directory.PICTURES)
addPlugin(imageSaverPlugin)
addPlugin(qrScannerPlugin)
},
onCameraControllerReady = {
cameraController.value = it
qrScannerPlugin.startScanning()
}
)
// Display your custom camera UI once controller is ready
cameraController.value?.let { controller ->
CameraScreen(cameraController = controller, imageSaverPlugin)
}
```
### 4. Capture and Save Images
```kotlin
Button(
onClick = {
scope.launch {
when (val result = cameraController.takePicture()) {
is ImageCaptureResult.Success -> {
// Handle the captured image
val bitmap = result.byteArray.decodeToImageBitmap()
// Manually save the image if auto-save is disabled
if (!imageSaverPlugin.config.isAutoSave) {
imageSaverPlugin.saveImage(
byteArray = result.byteArray,
imageName = "Photo_${System.currentTimeMillis()}"
)
}
}
is ImageCaptureResult.Error -> {
println("Image Capture Error: ${result.exception.message}")
}
}
}
}
) {
Text("Capture")
}
```
## Advanced Usage
Check the sample app in the repository for a complete implementation showcasing all features, including:
- Toggling between front and back cameras
- Managing flash modes
- Processing captured images
- Handling QR code scanning results
- OCR implementation
## Creating Custom Plugins
CameraK features a powerful plugin API that allows developers to extend its functionality. Explore the `qrScannerPlugin` or `imageSaverPlugin` source code for examples of how to build your own plugins.
## Status
This library is currently in experimental stage. APIs may change in future releases.
## Contributing
Contributions are welcome! Before submitting a pull request:
1. Open an issue to discuss your proposed changes
2. Fork the repository and create your branch
3. Implement your feature or fix
4. Ensure tests pass
5. Submit your pull request
## Support
If you find this library useful, consider supporting the developer:
## License
```
MIT License
```