MainActivity.kt

private fun bindUseCases(cameraProvider: ProcessCameraProvider) {
  val preview = buildPreview()
  val takePicture = buildTakePicture()
  val cameraSelector = buildCameraSelector()

  cameraProvider.bindToLifecycle(this, cameraSelector, preview, takePicture)

  button.setOnClickListener {
    lifecycle.coroutineScope.launchWhenResumed {
      val imageProxy = takePicture.takePicture(executor)
      val cardDetails = useCase(imageProxy.image!!, imageProxy.imageInfo.rotationDegrees)
      bindCardDetails(cardDetails)
    }
  }
}