ActivityResultContractForCameraPermission.kt

 private val cameraPermission =
        registerForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
            with(binding.root) {
                when {
                    granted -> {
                        showToastMessageInCenter("Permission Granted")
                        startCamera()
                    }
                    shouldShowRequestPermissionRationale(Manifest.permission.CAMERA) -> {
                        //this will be shown if the phone is running on api level > 23 else only classic dialog will be shown
                        showToastMessageInCenter("Permission Denied,Permission is needed to take photos")
                    }
                    else -> showToastMessageInCenter("Permission Denied")
                }
            }
        }