Adding markers dynamically to flutter google map
If there's no specific reason for you to use Map data structure, here's what I've done in the past.
I have a Set of Marker in my State
Set<Marker> markers = Set();Give it to the map widget. markers: markers
GoogleMap( onMapCreated: _onMapCreated, myLocationEnabled: true, initialCameraPosition: CameraPosition(target: LatLng(0.0, 0.0)), markers: markers,)And then adding the Marker, which I'm building with search result and which you'll be building with your user's location, to Set of Marker in setState method.
// Create a new markerMarker resultMarker = Marker( markerId: MarkerId(responseResult.name), infoWindow: InfoWindow( title: "${responseResult.name}", snippet: "${responseResult.types?.first}"), position: LatLng(responseResult.geometry.location.lat, responseResult.geometry.location.lng),);// Add it to Setmarkers.add(resultMarker);Edit: I've just noticed you're using GoogleMap widget in your initState, you need to move it to the build method if you want to rebuild it everytime with the new state values.