사진 촬영

사진 촬영하기

ImageCapture 사용 사례 만들기

val imageCapture = ImageCapture.Builder()
    .setCaptureMode(ImageCapture.CAPTURE_MODE_MINIMIZE_LATENCY)
    .build()

Preview와 ImageCapture 바인딩하기

cameraProvider.unbindAll()
cameraProvider.bindToLifecycle(
    lifecycleOwner,
    CameraSelector.DEFAULT_BACK_CAMERA,
    preview,
    imageCapture
)

저장 위치: MediaStore

val name = "photo_${System.currentTimeMillis()}"
val contentValues = ContentValues().apply {
    put(MediaStore.MediaColumns.DISPLAY_NAME, name)
    put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg")
    put(MediaStore.Images.Media.RELATIVE_PATH, "Pictures/MyApp")
}

출력 옵션

val outputOptions = ImageCapture.OutputFileOptions
    .Builder(
        context.contentResolver,
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
        contentValues
    )
    .build()

takePicture() 호출하기

imageCapture.takePicture(
    outputOptions,
    ContextCompat.getMainExecutor(context),
    object : ImageCapture.OnImageSavedCallback {
        override fun onImageSaved(output: ImageCapture.OutputFileResults) {
            val savedUri = output.savedUri
            // Photo saved! Show a confirmation.
        }
        override fun onError(exc: ImageCaptureException) {
            // Handle the failure.
        }
    }
)

결과 처리

override fun onImageSaved(output: ImageCapture.OutputFileResults) {
    val uri = output.savedUri ?: return
    Toast.makeText(context, "Saved: $uri", Toast.LENGTH_SHORT).show()
}

셔터 버튼 연결

Box(modifier = Modifier.fillMaxSize()) {
    CameraPreview(imageCapture = imageCapture)
    IconButton(
        onClick = { takePhoto(context, imageCapture) },
        modifier = Modifier
            .align(Alignment.BottomCenter)
            .padding(32.dp)
    ) {
        Icon(Icons.Default.PhotoCamera, contentDescription = "Take photo")
    }
}

takePhoto() 추출

fun takePhoto(context: Context, imageCapture: ImageCapture) {
    val values = ContentValues().apply {
        put(MediaStore.MediaColumns.DISPLAY_NAME, "IMG_${System.currentTimeMillis()}")
        put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg")
    }
    val options = ImageCapture.OutputFileOptions.Builder(
        context.contentResolver,
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
        values
    ).build()

    imageCapture.takePicture(
        options,
        ContextCompat.getMainExecutor(context),
        object : ImageCapture.OnImageSavedCallback {
            override fun onImageSaved(o: ImageCapture.OutputFileResults) {}
            override fun onError(e: ImageCaptureException) {}
        }
    )
}

플래시 및 회전

imageCapture.flashMode = ImageCapture.FLASH_MODE_AUTO
// Update target rotation when the device rotates:
imageCapture.targetRotation = display.rotation

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