Can't get user location after permission granted - flutter

Question

I tried get user location when button clicked using flutter location package
Code
FloatingActionButton(
onPressed: () async {
await location
.hasPermission()
.then((PermissionStatus status) async {
if (_permissionGranted == PermissionStatus.denied) {
await location.requestPermission().then(
(PermissionStatus requestStatus) async {
print("PERMISSION TAKEN");
await location
.getLocation()
.then((LocationData userLocation) {
print("LOCATION TAKEN 1");
print(userLocation);
});
},
);
} else {
await location
.getLocation()
.then((LocationData userLocation) {
print("LOCATION TAKEN 2");
print(userLocation);
});
}
});
},
child: Icon(Icons.place, color: Colors.white),
backgroundColor: Colors.green,
),
When user clicked to button requested permission to location and in my code after permission granted work this part of my code
print("PERMISSION TAKEN");
But then not work this part of code
await location
.getLocation()
.then((LocationData userLocation) {
print("LOCATION TAKEN 1");
print(userLocation);
});

Answer 1

you can also get the location by following:---------
pubspec.yaml file under dependencies:----
dependencies:
location: ^3.0.0
Android, add this permission in AndroidManifest.xml :
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
iOS, you have to add this permission in Info.plist :
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription
Warning: there is a currently a bug in iOS simulator in which you have to manually select a Location several in order for the Simulator to actually send data. Please keep that in mind when testing in iOS simulator.
main.dart
import 'package:flutter/material.dart';
import 'package:location/location.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter GPS',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: GetLocationPage(),
);
}
}
class GetLocationPage extends StatefulWidget {
#override
_GetLocationPageState createState() => _GetLocationPageState();
}
class _GetLocationPageState extends State<GetLocationPage> {
LocationData _currentLocation;
Location _locationService = new Location();
#override
void initState() {
// TODO: implement initState
super.initState();
_getLocation().then((value) {
setState(() {
_currentLocation = value;
});
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_currentLocation == null
? CircularProgressIndicator()
: Text("Location:" +
_currentLocation.latitude.toString() +
" " +
_currentLocation.longitude.toString()),
],
),
),
);
}
Future<LocationData> _getLocation() async {
LocationData currentLocation;
try {
currentLocation = await _locationService.getLocation();
} catch (e) {
currentLocation = null;
}
return currentLocation;
}
}
ss:---
In order to request location, you should always check manually Location Service status and Permission status. refer this https://pub.dev/packages/location

Answer 2

i get current location as below , try to use like this
Future<LatLng> getUserLocation() async {
LocationData currentLocation;
var location = new Location();
bool _serviceEnabled;
PermissionStatus _permissionGranted;
LocationData _locationData;
_serviceEnabled = await location.serviceEnabled();
if (!_serviceEnabled) {
_serviceEnabled = await location.requestService();
if (!_serviceEnabled) {
}
}
_permissionGranted = await location.hasPermission();
if (_permissionGranted == PermissionStatus.DENIED) {
_permissionGranted = await location.requestPermission();
if (_permissionGranted != PermissionStatus.GRANTED) {
}
}
// Platform messages may fail, so we use a try/catch PlatformException.
try {
currentLocation = await location.getLocation();
final lat = currentLocation.latitude;
final lng = currentLocation.longitude;
final coordinates = new Coordinates(lat, lng);
var addresses =
await Geocoder.local.findAddressesFromCoordinates(coordinates);
var first = addresses.first;
updateLocation(lat, lng, first.postalCode, first.locality,
first.countryName, first.adminArea, first.addressLine);
final center = LatLng(lat, lng);
return center;
} on PlatformException catch (e) {
if (e.code == 'PERMISSION_DENIED') {
showToast("LOCATION PERMISSION DENIED",
gravity: Toast.TOP, duration: Toast.LENGTH_LONG);
}
currentLocation = null;
}
}
And don't forget to add this permission in Info.plist
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription