private var binding: ActivityTravelingDetailBinding? = null
    ...
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this, R.layout.activity_traveling_detail)

        setSupportActionBar(toolbar)
        if (supportActionBar != null) {
            supportActionBar!!.setDisplayShowTitleEnabled(false)
            supportActionBar!!.setDisplayHomeAsUpEnabled(true)
        }

        if (card_maps_info.visibility == View.VISIBLE) changeMapsInfoVisibility()
    }
    ...
    override fun onMapReadyCallback() {
        sessionData.checkSession { isHasUserSession, user ->
            if (isHasUserSession && user != null) {
                presenter = TravelingDetailPresenter(this, this, user)
                presenter.bind()

                binding?.presenter = this.presenter as TravelingDetailPresenter

                val id = intent.getIntExtra(EXTRA_TRAVEL_ID, -1)

                if (id != -1) presenter.getTravelDetail(id)
                else if (intent.extras != null) {
                    traveling = intent.getParcelableExtra(TRAVELING_INFO_ARGS)
                    with(presenter) {
                        destination = traveling.location ?: traveling.remarks
                        information = traveling.description
                        title = traveling.remarks
                        startDate = DateConverter.format(
                            traveling.startAt,
                            DateConverter.DATE_DEFAULT_WITH_DAYNAME
                        )
                        endDate = DateConverter.format(
                            traveling.endAt,
                            DateConverter.DATE_DEFAULT_WITH_DAYNAME
                        )
                        travel = LatLng(traveling.latitude, traveling.longitude)
                        statusIsReady = traveling.status == "0"
                    }
                    checkTravelingStatus()
                }

                updateMyLocationPosition(presenter.location)
                if (this::traveling.isInitialized) {
                    travelMarker = addMarker(presenter.travel, presenter.destination)
                    initBounds()
                } else moveCameraToMyLocation()
            } else {
                checkUserSession(UserSession(isHasUserSession))
            }
        }
    }