Starting using geolocation.

lib/provider/location.dart

@@ -6,13 +6,12 @@ part 'location.g.dart';
 @riverpod
 class MyLocation extends _$MyLocation {
 
-  MyLocation() {
-    /*
+  Future<void> _detertimeLocation() async {
     bool serviceEnabled;
     LocationPermission permission;
 
     // Test if location services are enabled.
-    serviceEnabled = Geolocator.isLocationServiceEnabled().then(onValue);
+    serviceEnabled = await Geolocator.isLocationServiceEnabled();
     if (!serviceEnabled) {
       // Location services are not enabled don't continue
       // accessing the position and request users of the
@@ -37,11 +36,13 @@ class MyLocation extends _$MyLocation {
       // Permissions are denied forever, handle appropriately.
       return Future.error(
           'Location permissions are permanently denied, we cannot request permissions.');
-    }*/
+    }
   }
 
   @override
   Future<Position> build() async{
+    await  _detertimeLocation();
+
     Position l = Position(longitude: 0, latitude: 0,
         timestamp: DateTime.timestamp(), accuracy: 0, altitude: 0,
         altitudeAccuracy: 0, heading: 0, headingAccuracy: 0,