Flutter converting variable to Lat & Lng - flutter

Question

i have function which gets user phone location, and i want to set Marker on this location.
The question is :
How i can type to LatLng() location of user's phone.
What i tried? :
When i type there var locationMessage there is an error:
2 positional argument(s) expected, but 1 found
void getCurrentLocation() async {
var position = await Geolocator.getCurrentPosition(
desiredAccuracy: LocationAccuracy.high);
var lastPosition = await Geolocator.getLastKnownPosition();
print(lastPosition);
setState(() {
locationMessage = "${position.altitude}, ${position.longitude}";
});
}
GoogleMap(
markers: _markers,
initialCameraPosition: _kGooglePlex,
onMapCreated: (GoogleMapController controller) {
_controller.complete(controller);
setState(() {
_markers.add(Marker(
icon: mapMarker,
markerId: const MarkerId("marker-1"),
position: LatLng(//HOW TO INSERT HERE USER'S LOCATION)));
});
},
),

Answer 1

Instead of declaring locationMessage with String type use Position type.
so instead of
var position = await Geolocator.getCurrentPosition(
desiredAccuracy: LocationAccuracy.high);
replace with
locationMessage = await Geolocator.getCurrentPosition(
desiredAccuracy: LocationAccuracy.high);
Then here
........
........
........
setState(() {
_markers.add(Marker(
icon: mapMarker,
markerId: const MarkerId("marker-1"),
position: LatLng(locationMessage.latitude, locationMessage. longitude)));///PASS LAT AND LONG
});
........
........
........

Answer 2

I would suggest doing something like this:
create _currentLocation var:
LatLng _currentLocation;
update value inside getCurrentLocation() / setState():
_currentLocation = LatLng(position.latitude, position.longitude);
inside _markers.add use:
position: _currentLocation
You should initialize _currentLocation value inside initState() by calling getCurrentLocation():
#override
void initState() {
getCurrentLocation();
super.initState();
}
Note: if you are using google_maps_flutter package and you want to show the user position, you can set the myLocationEnabled property to true:
GoogleMap(
myLocationEnabled: true,
...