fixed GPS issue

lib/pages/destination/destination_controller.dart

@@ -52,6 +52,10 @@ class DestinationController extends GetxController {
   List<String> gps = <String>["-- stating --"].obs;
   List<String> locationPermission = <String>[" -- starting -- "].obs;
 
+  StreamSubscription<Position>? positionStream;
+
+  Timer? _GPStimer;
+
   var travelMode = 0.obs;
 
   bool skip_gps = false;
@@ -324,7 +328,8 @@ class DestinationController extends GetxController {
 
     db.deleteAllDestinations().then((value) {
       PopulateDestinations();
-      initGPS();
+      startGPSTimer();
+      //initGPS();
     });
 
     // currentSelectedDestinations.forEach((element) {
@@ -517,10 +522,10 @@ class DestinationController extends GetxController {
 
     if (defaultTargetPlatform == TargetPlatform.android) {
       locationSettings = AndroidSettings(
-          accuracy: LocationAccuracy.bestForNavigation,
-          distanceFilter: 0,
+          accuracy: LocationAccuracy.high,
+          distanceFilter: 1,
           forceLocationManager: true,
-          intervalDuration: const Duration(seconds: 1),
+          intervalDuration: const Duration(seconds: 3),
           //(Optional) Set foreground notification config to keep the app alive
           //when going to the background
           foregroundNotificationConfig: const ForegroundNotificationConfig(
@@ -532,7 +537,7 @@ class DestinationController extends GetxController {
     } else if (defaultTargetPlatform == TargetPlatform.iOS ||
         defaultTargetPlatform == TargetPlatform.macOS) {
       locationSettings = AppleSettings(
-          accuracy: LocationAccuracy.bestForNavigation,
+          accuracy: LocationAccuracy.high,
           activityType: ActivityType.fitness,
           distanceFilter: 0,
           pauseLocationUpdatesAutomatically: false,
@@ -546,8 +551,7 @@ class DestinationController extends GetxController {
     }
 
     try {
-      StreamSubscription<Position> positionStream =
-          Geolocator.getPositionStream(locationSettings: locationSettings)
+      positionStream = Geolocator.getPositionStream(locationSettings: locationSettings)
               .listen((Position? position) {
         current_lat = position != null ? position.latitude : 0;
         current_lon = position != null ? position.longitude : 0;
@@ -565,9 +569,9 @@ class DestinationController extends GetxController {
           //String user_id = indexController.currentUser[0]["user"]["id"].toString();
           //TrackingService.addTrack(user_id, position!.latitude, position.longitude).then((val){
           //print("---- postion is ${position.latitude},  ${position.longitude}");
-          gps.clear();
-          gps.add(
-              "-- lat : ${position.latitude}, lon : ${position.longitude} --");
+          //gps.clear();
+          //gps.add(
+            //  "-- lat : ${position.latitude}, lon : ${position.longitude} --");
           checkForCheckin(position.latitude, position.longitude);
           print("--- call check checkin");
           print("---- skip gps is ${skip_gps.toString()} ----");
@@ -583,10 +587,44 @@ class DestinationController extends GetxController {
     ever(indexController.connectionStatusName, connectionChanged);
   }
 
+
+  void startGPSTimer() {
+    // If a timer is already running, we first cancel it
+    _GPStimer?.cancel();
+
+    // Start a new timer that fires every 3 seconds
+    _timer = Timer.periodic(Duration(seconds: 3), (timer) async {
+      Position position = await Geolocator.getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
+
+      if (is_gps_selected.value) {
+          double czoom = indexController.rogMapController.zoom;
+          indexController.rogMapController
+              .move(LatLng(position.latitude, position.longitude), czoom);
+          checkForCheckin(position.latitude, position.longitude);
+          print("--- call check checkin");
+          print("---- skip gps is ${skip_gps.toString()} ----");
+        }
+    });
+  }
+
+  void stopGPSTimer() {
+    _GPStimer?.cancel();
+  }
+
+
+
+  @override
+  void onClose() {
+    positionStream?.cancel();
+    _GPStimer?.cancel();
+    super.onClose();
+    super.onClose();
+  }
+
   @override
   void onInit() async {
-    initGPS();
-
+    //initGPS();
+    startGPSTimer();
     super.onInit();
   }