CameraFragment for cameraX sample

CameraFragment.kt

class CameraFragment : Fragment(R.layout.fragment_camera), ControlView.Listener {
    private lateinit var cameraExecutor: ExecutorService
  
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        
        cameraExecutor = Executors.newSingleThreadExecutor()
        cameraView.bindToLifecycle(viewLifecycleOwner)
        cameraView.captureMode = CameraView.CaptureMode.MIXED
        controlView.setListener(this)
        controlView.cameraToggleVisibility = cameraView.hasBackCamera && cameraView.hasFrontCamera
    }

    override fun onDestroyView() {
        super.onDestroyView()
        cameraExecutor.shutdown()
    }
    
    override fun onResume() {
        super.onResume()
        if (!PermissionFragment.hasPermissions(requireContext()))
            findNavController()
                .navigate(CameraFragmentDirections.actionCameraFragmentToPermissionFragment())
    }

    //... implemented methods
}