如何获取谷歌地图flutter插件中标记的点的位置？我需要确定一个位置并获取要打印的该位置的确切地址。这是我的代码。关于如何做到这一点的任何建议？我一次只需要一个标记。如果在地图上标记了某个地点时，该位置会显示在一个小的弹出框中，那就太好了。提前致谢。
class Map extends StatefulWidget {
@override
_MapState createState() => _MapState();
}
class _MapState extends State<Map> {
final houseController = TextEditingController();
final buildingController = TextEditingController();
final zipController = TextEditingController();
final cityController = TextEditingController();
final stateController = TextEditingController();
final locationController = TextEditingController();
final combineAddressController = TextEditingController();
final buildingNameController = TextEditingController();
final subLocalityController = TextEditingController();
final localityController = TextEditingController();
var checkedValue = false;
var locPg = false;
var pg = true;
Completer<GoogleMapController> controller1;
static LatLng _initialPosition;
final Set<Marker> _markers = {};
static LatLng _lastMapPosition = _initialPosition;
@override
void initState() {
super.initState();
_getUserLocation();
}
void _getUserLocation() async {
Position position = await Geolocator()
.getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
List<Placemark> placemark = await Geolocator()
.placemarkFromCoordinates(position.latitude, position.longitude);
setState(() {
_initialPosition = LatLng(position.latitude, position.longitude);
print('${placemark[0].name}');
});
}
_onMapCreated(GoogleMapController controller) {
setState(() {
controller1.complete(controller);
});
}
MapType _currentMapType = MapType.hybrid;
void _onMapTypeButtonPressed() {
setState(() {
_currentMapType =
_currentMapType == MapType.hybrid ? MapType.normal : MapType.hybrid;
});
}
_onCameraMove(CameraPosition position) {
_lastMapPosition = position.target;
}
Widget mapButton(Function function, Icon icon, Color color) {
return RawMaterialButton(
onPressed: function,
child: icon,
shape: new CircleBorder(),
elevation: 2.0,
fillColor: color,
padding: const EdgeInsets.all(7.0),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
elevation: 0,
centerTitle: true,
title: Text(
'Choose your location',
style: TextStyle(color: Colors.white),
),
leading: IconButton(
onPressed: () {
Navigator.pop(context);
},
icon: Icon(
Icons.arrow_back_ios_rounded,
color: Colors.white,
),
),
actions: [
IconButton(
icon: Icon(Icons.check),
color: Colors.white,
onPressed: () async {
HapticFeedback.heavyImpact();
print("location tapped");
Fluttertoast.showToast(
msg: "Location Updated!",
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.BOTTOM,
timeInSecForIosWeb: 1,
backgroundColor: Colors.blue,
textColor: Colors.white,
fontSize: 13.0);
_getLocation();
SharedPreferences prfs = await SharedPreferences.getInstance();
},
)
],
),
body: _initialPosition == null
? Container(
child: Center(
child: Text(
'Loading map...',
),
),
)
: Container(
child: Stack(children: <Widget>[
GoogleMap(
markers: _markers,
// markers: Set<Marker>.of(markers.values),
mapType: _currentMapType,
// onTap: _getUserLocation(),
initialCameraPosition: CameraPosition(
target: _initialPosition,
zoom: 14.4746,
),
onMapCreated: _onMapCreated,
// onTap: ,
zoomGesturesEnabled: true,
onCameraMove: _onCameraMove,
myLocationEnabled: true,
compassEnabled: true,
zoomControlsEnabled: true,
myLocationButtonEnabled: true,
padding: EdgeInsets.only(top: 100, bottom: 20, right: 15),
),
Align(
alignment: Alignment.topRight,
child: Container(
margin: EdgeInsets.fromLTRB(0.0, 50.0, 0.0, 0.0),
child: Column(
children: <Widget>[
mapButton(
_onMapTypeButtonPressed,
Icon(
Icons.layers_outlined,
color: Colors.black87,
size: 25,
),
Colors.white,
),
],
)),
)
]),
),
);
}
_getLocation() async {
setState(() {
locPg = true;
pg = false;
});
try {
Geolocator geoLocator = Geolocator()..forceAndroidLocationManager = true;
Position currentLocation = await geoLocator.getCurrentPosition(
desiredAccuracy: LocationAccuracy.best);
List<Placemark> placemark = await Geolocator().placemarkFromCoordinates(
currentLocation.latitude, currentLocation.longitude);
print("currentLocation");
SharedPreferences prfs = await SharedPreferences.getInstance();
prfs.setString("Lat", currentLocation.latitude.toString());
prfs.setString("Long", currentLocation.longitude.toString());
print(currentLocation.latitude);
print(currentLocation.longitude);
if (currentLocation != null) {
print("position : ${placemark[0].position}");
print("locality : ${placemark[0].locality}");
print("administrativeArea : ${placemark[0].administrativeArea}");
print("postalCode : ${placemark[0].postalCode}");
print("name : ${placemark[0].name}");
print("subAdministrativeArea : ${placemark[0].subAdministrativeArea}");
print("isoCountryCode : ${placemark[0].isoCountryCode}");
print("subLocality : ${placemark[0].subLocality}");
print("subThoroughfare : ${placemark[0].subThoroughfare}");
print("thoroughfare : ${placemark[0].thoroughfare}");
if (placemark[0] != null) {
if (placemark[0].administrativeArea.isNotEmpty) {
stateController.text = placemark[0].administrativeArea;
}
if (placemark[0].postalCode.isNotEmpty) {
zipController.text = placemark[0].postalCode;
}
if (placemark[0].subAdministrativeArea.isNotEmpty) {
cityController.text = placemark[0].subAdministrativeArea;
}
if (placemark[0].name.isNotEmpty) {
buildingController.text = placemark[0].name;
}
if (placemark[0].subLocality.isNotEmpty) {
subLocalityController.text = placemark[0].subLocality;
}
if (placemark[0].locality.isNotEmpty) {
localityController.text = placemark[0].locality;
}
if (placemark[0].name.isNotEmpty) {
buildingNameController.text = placemark[0].name;
}
combineAddressController.text = buildingNameController.text +
", " +
subLocalityController.text +
", " +
localityController.text;
setState(() {
locPg = false;
pg = true;
});
}
}
} on PlatformException catch (error) {
print(error.message);
setState(() {
locPg = false;
pg = true;
});
} catch (error) {
print("Error: $error");
setState(() {
locPg = false;
pg = true;
});
}
}