Simple compose function for CameraX Preview

SimpleCameraPreview.kt

@Composable
fun SimpleCameraPreview() {
    val lifecycleOwner = LocalLifecycleOwner.current
    val context = LocalContext.current
    val cameraProviderFuture = remember { ProcessCameraProvider.getInstance(context) }

    AndroidView(
        factory = { ctx ->
            val previewView = PreviewView(ctx)
            val executor = ContextCompat.getMainExecutor(ctx)
            cameraProviderFuture.addListener({
                val cameraProvider = cameraProviderFuture.get()
                val preview = Preview.Builder().build().also {
                    it.setSurfaceProvider(previewView.surfaceProvider)
                }

                val cameraSelector = CameraSelector.Builder()
                    .requireLensFacing(CameraSelector.LENS_FACING_BACK)
                    .build()

                cameraProvider.unbindAll()
                cameraProvider.bindToLifecycle(
                    lifecycleOwner,
                    cameraSelector,
                    preview
                )
            }, executor)
            previewView
        },
        modifier = Modifier.fillMaxSize(),
    )
}