Flutter-geolocator: get Current Location Null

Created on 22 Apr 2019 · 15Comments · Source: Baseflow/flutter-geolocator

Hello Sir,

while i run app into android platform getting location null.

Please helm me

android needs more info

Source

BhaveshPrince

👍1

All 15 comments

Me Too.

My Code:

Geolocator geolocator = Geolocator();
Future<Position> getLocation() async {
    Position currentLocation;

    GeolocationStatus permission = await geolocator.checkGeolocationPermissionStatus();
    print('location-->${permission}');

    try {
      currentLocation = await geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.best);
    } on PlatformException catch (e) {
      print('e-->${e}');
      currentLocation = null;
    }

    print('currentLocation-->${currentLocation}');

    return currentLocation;
  }

Output:
I/flutter (25071): location-->GeolocationStatus.granted
W/GooglePlayServicesUtil(25071): Google Play Store is missing.

My phone is not installed Google Play Store and Google Play Service

xuanjinliang on 26 Apr 2019

Try the latest develop branch, please.

ened on 20 May 2019

@BhaveshPrince, @xuanjinliang, does this issue still occur with the latest version (5.0.0) of the Geolocator plugin?

@xuanjinliang, if you don't have Google Play Store you can try forcing (although this should be done automatically) the plugin to use the legacy LocationManager to acquire the location by setting the forceAndroidLocationManager property of the Geolocator class to true:

try {
  final Geolocator geolocator = Geolocator()
    ..forceAndroidLocationManager = true;
  position = await geolocator.getLastKnownPosition(
    desiredAccuracy: LocationAccuracy.best);
} on PlatformException {
  position = null;
}

mvanbeusekom on 22 May 2019

👎1 👍1

@mvanbeusekom used to work perfectly but got an error earlier. Just hangs without returning back any results.

ronaldG19 on 7 Jun 2019

Had the same behaviour with 4.0.3 (nothing happens after the getCurrentPosition invocation).
With 5.0.1I get following platform exception:

expand

W/GooglePlayServicesUtil(29584): Google Play Store is missing.
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584): Failed to handle method call
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584): java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Map
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at com.baseflow.geolocator.data.LocationOptions.parseArguments(LocationOptions.java:17)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at com.baseflow.geolocator.tasks.TaskFactory.createCurrentLocationTask(TaskFactory.java:36)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at com.baseflow.geolocator.GeolocatorPlugin.onMethodCall(GeolocatorPlugin.java:66)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:201)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:88)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:219)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at android.os.MessageQueue.next(MessageQueue.java:326)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at android.os.Looper.loop(Looper.java:160)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at android.app.ActivityThread.main(ActivityThread.java:6718)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/MethodChannel#flutter.baseflow.com/geolocator/methods(29584):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/flutter (29584): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: PlatformException(error, java.lang.String cannot be cast to java.util.Map, null)
E/flutter (29584): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:564:7)
E/flutter (29584): #1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:302:33)
E/flutter (29584): <asynchronous suspension>
E/flutter (29584): #2      Geolocator.getCurrentPosition (package:geolocator/geolocator.dart:96:32)
E/flutter (29584): <asynchronous suspension>
E/flutter (29584): #3      MapPageState.createVendingLocation (package:eismann/pages/mapPage.dart:71:44)
E/flutter (29584): <asynchronous suspension>
E/flutter (29584): #4      MapGestureMixin.handleTap (package:flutter_map/src/gestures/gestures.dart:94:13)
E/flutter (29584): #5      _TapPositionDetectorState._postCallback (package:positioned_tap_detector/positioned_tap_detector.dart:108:15)
E/flutter (29584): <asynchronous suspension>
E/flutter (29584): #6      _TapPositionDetectorState._onTimeout (package:positioned_tap_detector/positioned_tap_detector.dart:52:7)
E/flutter (29584): #7      _invokeErrorHandler (dart:async/async_error.dart:17:29)
E/flutter (29584): #8      _HandleErrorStream._handleError (dart:async/stream_pipe.dart:286:9)
E/flutter (29584): #9      _ForwardingStreamSubscription._handleError (dart:async/stream_pipe.dart:168:13)
E/flutter (29584): #10     _rootRunBinary (dart:async/zone.dart:1144:38)
E/flutter (29584): #11     _CustomZone.runBinary (dart:async/zone.dart:1037:19)
E/flutter (29584): #12     _CustomZone.runBinaryGuarded (dart:async/zone.dart:939:7)
E/flutter (29584): #13     _BufferingStreamSubscription._sendError.sendError (dart:async/stream_impl.dart:355:15)
E/flutter (29584): #14     _BufferingStreamSubscription._sendError (dart:async/stream_impl.dart:373:16)
E/flutter (29584): #15     _BufferingStreamSubscription._addError (dart:async/stream_impl.dart:272:7)
E/flutter (29584): #16     _SyncStreamController._sendError (dart:async/stream_controller.dart:768:19)
E/flutter (29584): #17     _StreamController._addError (dart:async/stream_controller.dart:648:7)
E/flutter (29584): #18     _StreamController.addError (dart:async/stream_controller.dart:600:5)
E/flutter (29584): #19     Stream.timeout.onListen.<anonymous closure> (dart:async/stream.dart:1512:22)
E/flutter (29584): #20     _rootRun (dart:async/zone.dart:1124:13)
E/flutter (29584): #21     _CustomZone.run (dart:async/zone.dart:1021:19)
E/flutter (29584): #22     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
E/flutter (29584): #23     Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:21:15)
E/flutter (29584): #24     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
E/flutter (29584): #25     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
E/flutter (29584): #26     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:171:12)

locationOptions: ```dart {\"accuracy\":\"high\",\"distanceFilter\":0,\"forceAndroidLocationManager\":true,\"timeInterval\":0} ```

Update:

Got it working after I upgraded com.android.tools.build:gradle:3.3.1'to 3.4.1 (as used in the example) in the android build.gradle. Had to change distribution in gradle-wrapper.properties to https\://services.gradle.org/distributions/gradle-5.1.1-all.zip. I also used flutter clean and deleted the app from my phone. I don't know what the fix was in the end but maybe this helps.

FalkF on 9 Jun 2019

👍1

thanks @FalkF !
upgrading gradle solved the issue.

Xgamefactory on 10 Jun 2019

Commenting out this line
..forceAndroidLocationManager = true
Solved the issue for me

trey-rosius on 11 Jun 2019

@xuanjinliang ,me too,If you solve this problem, I hope you can tell me.

moboer on 27 Aug 2019

Issues should be solved with version 6.0.0

mvanbeusekom on 4 Sep 2020

geolocator: ^7.0.3
In my phone is not installed Google Play Store and Google Play Service
Geoposition is not defined, in the logs:
W/GooglePlayServicesUtil(26708): <packagename> requires the Google Play Store, but it is missing.

forceAndroidLocationManager - does not find such a method in class Geolocator.

kostasoft on 28 Apr 2021

@kostasoft Since version 6.0.0 the forceAndroidLocationManager method has been replaced by a parameter on the getCurrentPosition and getPositionStream methods.

Meaning from version 6.0.0 you can force the use of the LocationManager SDK like this:

Position position = await Geolocator.getCurrentPosition(
  desiredAccuracy: LocationAccuracy.high,
  forceAndroidLocationManager: true,
);

mvanbeusekom on 28 Apr 2021

Thank you. I did as you said, still an error:
... requires the Google Play Store, but it is missing.

kostasoft on 28 Apr 2021

Just a sanity check, you used forceAndroidLocationManager: true, or false? False should be correct ;)

FalkF on 28 Apr 2021

Just a sanity check, you used forceAndroidLocationManager: true, or false? False should be correct ;)

This is incorrect, false is the default behavior and doesn't force the use of the legacy Android Location Manager.

In this case the phone doesn't support Google Play Services and therefore is unable to use the FusedLocationProviderClient and you'd want to switch to use of the LocationManager (this should be handled in the Geolocator internally, but some users like to force this manually which can be done using the forceAndroidLocationManager parameter).

mvanbeusekom on 28 Apr 2021

👍1

In any case, the plugin requires the Google Play Store (in the logs) and the location is not detected.
Is there a solution to this issue?

kostasoft on 28 Apr 2021

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