带地图的Kotlin（标记未显示）

Question

您好我正在尝试在kotlin中实现Google Maps，但在这些代码中我的getMapAsync没有被调用，地图显示完美但标记没有显示

    var mapFragment : SupportMapFragment?=null
    mapFragment= fragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
    mapFragment?.getMapAsync { 
        val sydney = LatLng(22.30, 73.20)
        mMap!!.addMarker(MarkerOptions().position(sydney).title("Marker in Sydney"))
        mMap!!.moveCamera(CameraUpdateFactory.newLatLng(sydney))


        Toast.makeText(activity,"dfgdg",Toast.LENGTH_LONG).show() }

Answer 1

1. 您使用的是错误的地图实例。
2. Sydney lat lng是-33.8479731,150.6517908

mapFragment?.getMapAsync { 

    map ->  // <- this is the map that you got async not mMap            
        val sydney = LatLng(-33.8479731, 150.6517908)
        map.addMarker(...
        map.moveCamera(...
}