onUserLocationUpdated not firing (Android, v0.9.0).

[thomfra]

I am not getting any updates on position when my app is starting. However, when I turn off and on the screen again, the callbacks are firing as expected. Anyone else experiencing this?

On iOS on the other hand it works like a charm.

[n00bsys0p]

We have exactly the same problem. On iOS onUserLocationUpdated fires fine, but on Android it doesn't fire until after the screen is turned off and on again. Totally reliable.

@thomfra Did you ever find a solution to the problem?

[Vivalemuc]

Exactly the same here !

Any solutions ?

Or the best is to use another solution to track the user position on Android ? (Pitty)

[Vivalemuc]

@n00bsys0p I fork the project and modify MapboxMapController like this :

On line 315 i replace the block by :

 if (myLocationEnabled) {
      updateMyLocationEnabled();
}

Obviously the permission need to be granted before this call, so ensure the permission is granted before call the map initialization

[mayouf]

@n00bsys0p I fork the project and modify MapboxMapController like this :

On line 315 i replace the block by :

 if (myLocationEnabled) {
      updateMyLocationEnabled();
}

Obviously the permission need to be granted before this call, so ensure the permission is granted before call the map initialization

Can you be more specific ? what file (java, dart), what function ?

I have the same issue. When I change location permission on Android 9, the permission do not propagate. So, we need to restart the app to make it work.

[Vivalemuc]

The android/MapboxMapController.java file !
On line 315, you need to replace enable....() by updateMyLocationEnabled() !

But you need to granted location permission before the display of the map ;)

[mayouf]

@Vivalemuc thx for replying quickly, kind of you...

Correct us if im wrong and for those future dev coming meeting the same bug:

1. You edited the following file: flutter-mapbox-gl/android/src/main/java/com/mapbox/mapboxgl/MapboxMapController.java

2. At the line 315, you have this block:

 if (myLocationEnabled) {
        enableLocationComponent(style);
      }

3. And you replace this block by the code below

if (myLocationEnabled) {
      updateMyLocationEnabled();  // this line was replaced
}

By doing that, the app crashes !!

[Vivalemuc]

Look at my fork :

https://github.com/Vivalemuc/flutter-mapbox-gl/blob/master/android/src/main/java/com/mapbox/mapboxgl/MapboxMapController.java

You can try it ;)
You must change another line of code, but it's not related with this bug, so just clone my fork or try it on your pubspec to see the result ;)

[mayouf]

Not working here ! Thx a lot @Vivalemuc for sharing and answering.

I'll dig it and let people know here when I found out.

For sure, it is not related to the plugin flutter-permission-handler .

The isGranted permission is correctly propagated. This is related to mapbox-gl.

[Vivalemuc]

Last answer :

On your pubspec.yaml put this :

 mapbox_gl:
    git:
      url: https://github.com/Vivalemuc/flutter-mapbox-gl.git
      ref: master

The plugin is working properly for me on fluter dev 1.26...

[mayouf]

Hi @tobrun,

Litlle by little, devices are updating to android 10 and even 11.

The permission handling is getting more complicated with more choices: check below HOW IT EVOLVES.

From android 9, we went from simple location permission to:

• A double level permission (foreground + background).
• It is related with multiple permission choice possible:

While using the app
Only this time
Deny
Ask every time.

Do you think you can give us a clue on how to handle the permission change while the app is running without crashing ?

[JanIceTea]

Has this ever been picked up? I'm using the latest version 0.12.0 and still have the same issue. This makes it pretty much un-usable on Android.

[KawindaWAD]

in MapboxMap widget, myLocationEnabled parameter should be set as false when creating the screen. you can set it to true after creating the map by using onMapCreated function. then onUserLocationUpdated function works normally.

bool _myLocationEnabled = false;

MapboxMap(
    onMapCreated: onMapCreated,
    onUserLocationUpdated: (userLocation) {
          print("User location updated: ${userLocation.position}");
    },
    myLocationEnabled: _myLocationEnabled,
)

void onMapCreated(MapboxMapController controller) {
    setState(() {
      this.mapController = controller;
      _myLocationEnabled = true;
    });
}

[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.