我如何从AutoCompleteFragment中获取PlaceSelectionListener数据到MapFragment？

Question

如何从AutoCompleteFragment中获取PlaceSelectionListener数据到MapFragment？

我想从AutoCompleteFragment信息中添加Marker到Google Map上，例如，如果用户选择了NewYork这个地方，Google Map就会在NewYork上添加新的标记，我现在把它分为AutoCompleteFragment和MapFragment。

这是AutoCompleteFragment类，这是MapFragment类。

class AutoCompleteFragment : Fragment() {
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val root = inflater.inflate(R.layout.fragment_autocomplete, container, false)
        return root
    }

    override fun onViewCreated(
        view: View,
        savedInstanceState: Bundle?
    ) {
        super.onViewCreated(view, savedInstanceState)

        if (!Places.isInitialized()) {
            Places.initialize(requireActivity(), google_key, Locale.US);
        }

        val autoCompleteFragment =
            childFragmentManager.findFragmentById(R.id.autocomplete_fragment) as AutocompleteSupportFragment

        autoCompleteFragment.setPlaceFields(
            mutableListOf(
                Place.Field.ID,
                Place.Field.NAME,
                Place.Field.LAT_LNG
            )
        )
    }
}

这是MapFragment类。

class MapFragment : Fragment(), OnMapReadyCallback {

    private lateinit var mapViewModel: MapViewModel
    private lateinit var mMap: GoogleMap

    override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?
    ): View? {
        mapViewModel =
                ViewModelProviders.of(this).get(MapViewModel::class.java)
        val root = inflater.inflate(R.layout.fragment_map, container, false)

        return root
    }

    override fun onViewCreated(
        view: View,
        savedInstanceState: Bundle?
    ) {
        val mapFragment = childFragmentManager.findFragmentById(R.id.map) as SupportMapFragment
        mapFragment.getMapAsync(this)
    }

    override fun onMapReady(googleMap: GoogleMap) {
        mMap = googleMap

        // Add a marker in Sydney and move the camera
        val home = LatLng(35.535840, 138.713890)
        mMap.addMarker(MarkerOptions().position(home).title("Marker in Home"))
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(home, 14.5f))
    }
}