import 'package:location/location.dart';

Location location = Location();
location.enableBackgroundMode(enable: true)

bool serviceEnabled;
PermissionStatus permissionGranted;
LocationData locationData;

serviceEnabled = await location.serviceEnabled();
if (!serviceEnabled) {
  serviceEnabled = await location.requestService();
  if (!serviceEnabled) {
    return;
  }
}

permissionGranted = await location.hasPermission();
if (permissionGranted == PermissionStatus.denied) {
  permissionGranted = await location.requestPermission();
  if (permissionGranted != PermissionStatus.granted) {
    return;
  }
}

locationData = await location.getLocation();