backhandler-7.kt

class MainActivity : AppCompatActivity() {
    private val rootHandler = ScopedBackPressHandler()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MaterialTheme {
                RootBackHandler(rootHandler) {
                    Root.Content(LoggedOut)
                }
            }
        }
    }

    override fun onBackPressed() {
        if (!rootHandler.handle()) {
            super.onBackPressed()
        }
    }
}