_locationService.getLocation() not returning anything on iPad.

[Shivamtruein]

Describe the bug
The _locationService.getLocation() is not returning anything on Ipad mini wifi model.
The code gets to this line and after that, it never returns anything.

Expected behavior
_locationService.getLocation() should return location.

Tested on:

• Android - On Android, it's working fine.
• iOS, Ipad mini 2018 wifi only model it's not working.

Additional logs

Code written

try { _locationService.changeSettings( accuracy: LocationAccuracy.HIGH, ); currentLocation = await _locationService.getLocation(); return true; } catch (e) { print(e); if (e.code == 'PERMISSION_DENIED') { _locationService.requestPermission(); } else if (e.code == 'SERVICE_STATUS_DISABLED') { _locationService.requestService(); } currentLocation = null; return false; }

[ZantsuRocks]

The localization service was enabled when requesting the localization?

[Shivamtruein]

Yes, the service was enabled when I was trying. I checked before hitting the code, even tried manually on and off the service but no result.

[YarMag]

Same problem. await _locationService.getLocation() never returns on the all iOS simulators. That happened after I've updated my Xcode. I suppose, it could be somehow related to updated iOS version on virtual devices.

[ZantsuRocks]

I opened a pull request with the fix.
Waiting for approval.

PR: #362

[Shivamtruein]

@ZantsuRocks When can we expect the resolution?

[daniloapr]

Same problem here for iPhone devices. I am doing a work around using the onLocationChanged

[rasmusir]

Make sure you set the device location in xcode, if you don't getLocation() will never return.

[Hyla96]

Same error here, running targetting iOS 10.0. For me does not work onLocationChanged aswell, tried a workaround with

LocationData loc = await Location().onLocationChanged.first

But it still does not return anything

#Edit

I did manager to solve it:

The problem was that I called a listener to listen changes of position and than I tried to call again .getLocation(), basically the sequence of events was:

-> Instantiate Location and get once .getLocation() -> Returned the current location;
-> Instantieted a listener to listen changes of user's position;
-> Called again .getLocation() -> Did not return anything, just kept going.

To solve it I put a provider over my flutter application, and passed trough context my LocationHelper, where I stored lastPositionKnown, so now:

-> Instantiate Location, get once .getLocation() and save it in lastPositionKnown;
-> Instantiate a position listener and each change is saved in lastPositionKnown;
-> When I need again current position I call a custom getLocation that returns lastPositionKnown;

I don't know if this library has a lastPositionKnown, but It wouldn't be that bad to have it.

[dave-k]

@Hyla96 I have the same issue. The first time .getLocation() returns the current location but the second time it does not return anything. Would you be able to share the code for your solution?

[Hyla96]

@dave-k

At the moment I'm not able to, but you can follow the following steps to workaround it:

Create a LocationHelper class where you fetch and save location into a variable:

class LocationHelper{

 Location _locationdata;
 
LocationHelper(){
  this._locationdata = fetchLocation();
}
Location getLocation(){
 return _locationdata;
}
Location fetchLocation(){
 //Here you call once the location
}
}

Now you place a Provider over your main app:

Provider(
  create: (_) => LocationHelper(),
  child: MyMainApp()
)

Now when you need your location instead calling it again you can call

Provider.of<LocationHelper>(context).getLocation();

I'm sorry but I've written it from my phone, just follow the logic and implement the code properly. You can also add a listener in your locationhelper in order to update the locationdata in case it changes. This worked great for me :)

[dave-k]

@Hyla96

Location _locationdata;
I was confused by the above statement. Is _locationdata of type Location or LocationData?

Here is my code.

There is one issue. Provider.of<LocationData>(context, listen: false); returns null the first time it is called.

LocationHelper.dart:

class LocationHelper {
  LocationHelper(){
    _locationdata = fetchLocation();
  }
  Future<LocationData> _locationdata;

  Future<LocationData> getLocation() {
    return _locationdata;
  }
  Future<LocationData> fetchLocation() async {
    // Call Location() once
    return await Location().getLocation();
  }
}

main.dart

FutureProvider<LocationData>(create: (_) => LocationHelper().getLocation())

locationscreen.dart

final LocationData _locationData = Provider.of<LocationData>(context, listen: false);
if(_locationData != null) {
  print('latitude: ${_locationData.latitude} longitude: ${_locationData.longitude}');
}

[Hyla96]

Yeah I'm sorry, that should be a LocationData. However, you should modify that provider and turn it into a LocationHelper() and get the location in a initialization method, you are actually passing LocationData with that provider, and sound really awkward to me, because that's a future and weird things might happen. So:

1. In the provider pass the entire class LocationHelper and not just LocationData;
2. Call fetch location after you have initialized LocationHelper (await Provider.of(context, listen:false).fetchLocation()) somewhere in a init() method;
3. Make _locationdata and _getlocation synchronous, that Future doesn't really make sense tbh

[dave-k]

@Hyla96
I followed your explanation and this code seems to be working.

LocationHelper.dart:

class LocationHelper{
  LocationData _locationData;
  
  LocationData getLocation(){
    return _locationData;
  }

  LocationData fetchLocation(){
    Location().getLocation()
      .then((LocationData locationData) => _locationData = locationData);
  }
}

main.dart

Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        Provider<LocationHelper>(create: (_) => LocationHelper())
      ],
      child: MaterialApp(

. . .

@override
  Widget build(BuildContext context) {
    Provider.of<LocationHelper>(context, listen:false).fetchLocation();

locationscreen.dart

    final LocationData _locationData = Provider.of<LocationHelper>(context, listen:false).getLocation();
    print('latitude: ${_locationData.latitude} longitude: ${_locationData.longitude}');

[bhaveshbusa]

Make sure you set the device location in xcode, if you don't getLocation() will never return.

What should the behaviour be when device location in xcode simulator is None? getLocation code hangs of me

Is there a way to check location is None to avoid being blocked on the getLocation call?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[aacassandra]

still not working on ios.

[acamue]

Still not working on ios here !!!!!how to solve ???

[RogerBrusamarello]

Any updates? It still not working on iOS. Apple is rejecting my app because of this.

[LaysDragon]

I feeling that the gps feature on ios simulator is soooo broke compared to android simulator...it don't return the result while using custom location, and don't even have map to pick up location like android...

[alidev0]

Still an issue

[alidev0]

Same error here, running targetting iOS 10.0. For me does not work onLocationChanged aswell, tried a workaround with

LocationData loc = await Location().onLocationChanged.first

But it still does not return anything

#Edit

I did manager to solve it:

The problem was that I called a listener to listen changes of position and than I tried to call again .getLocation(), basically the sequence of events was:

-> Instantiate Location and get once .getLocation() -> Returned the current location; -> Instantieted a listener to listen changes of user's position; -> Called again .getLocation() -> Did not return anything, just kept going.

To solve it I put a provider over my flutter application, and passed trough context my LocationHelper, where I stored lastPositionKnown, so now:

-> Instantiate Location, get once .getLocation() and save it in lastPositionKnown; -> Instantiate a position listener and each change is saved in lastPositionKnown; -> When I need again current position I call a custom getLocation that returns lastPositionKnown;

I don't know if this library has a lastPositionKnown, but It wouldn't be that bad to have it.

nailed it. this was my case. just removed the gps data stream and works.

[vanlooverenkoen]

Still not working as it should.
This is our current implementation/workaround.

setInitialLocation is used in the splash
onLocationChanged is used on the map
getLocation is used to "trick this package"

  @override
  Stream<LocationTrackingData> onLocationChanged() {
    if (Platform.isIOS) {
      getLocation();
    }
    return location.onLocationChanged.map((location) => LocationTrackingData(
          latitude: location.latitude,
          longitude: location.longitude,
          accuracy: location.accuracy,
          isMock: location.isMock ?? false,
        ));
  }

  @override
  Future<LocationTrackingData> getLocation() async {
    final location = await this.location.getLocation();
    return LocationTrackingData(
      latitude: location.latitude,
      longitude: location.longitude,
      accuracy: location.accuracy,
      isMock: location.isMock ?? false,
    );
  }

  @override
  Future<void> setInitialLocation() async {
    final status = await this.location.hasPermission();
    if (status != PermissionStatus.granted) return;
    final location = await onLocationChanged().first;
    final lat = location.latitude;
    final lon = location.longitude;
    if (lat == null || lon == null) return;
    _initialLocation = LatLonData(latitude: lat, longitude: lon);
  }