MainActivity.kt

class MainActivity : AppCompatActivity() {

    lateinit var orientationListener: OrientationEventListener

    override fun onCreate(savedInstanceState: Bundle?) {
        orientationListener = object: OrientationEventListener(this) {
            override fun onOrientationChanged(orientation: Int) {
               viewModel.onOrientationChange(orientation, resources.configuration.orientation)
            }
        }.apply { disable() }

    }
}