[Question]: Geolocator.getPositionStream triggers frame refreshes when used with MapLibre_gl

[tmorell]

Please check the following before submitting a new issue.

• [x] I have searched the existing issues.
• [x] I have carefully read the documentation.

Please select for which platform(s) you need help

• [x] Android
• [ ] iOS
• [ ] Linux
• [ ] macOS
• [ ] Web
• [ ] Windows

Your question

Using Geolocator.getPositionStream with MapLibre_gl causes frame refreshes on Android, even when the GPS coordinates are not changing. This behavior, observed on Android but not iOS, leads to constant frame generation.

Versions:

• geolocator: 14.0.1
• maplibre_gl: 0.22.0

Sample code to reproduce the issue:

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import 'package:maplibre_gl/maplibre_gl.dart';

class TestGeolocator extends StatefulWidget {
  const TestGeolocator({super.key});

  @override
  State<TestGeolocator> createState() => _TestGeolocatorState();
}

class _TestGeolocatorState extends State<TestGeolocator> {
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) async {
      await _trackCoordinates();
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: MapLibreMap(
          compassViewPosition: CompassViewPosition.topRight,
          styleString: 'https://style_url',
          myLocationEnabled: true,
          initialCameraPosition: const CameraPosition(
            target: LatLng(40.947970551634754, -4.118041773948952),
            zoom: 18.5,
          ),
          trackCameraPosition: true,
        ),
      ),
    );
  }

  Future<void> _trackCoordinates() async {
    var locationSettings = const LocationSettings(accuracy: LocationAccuracy.high, distanceFilter: 5);
    Geolocator.getPositionStream(locationSettings: locationSettings).listen((position) async {
      print('${position.latitude}, ${position.longitude}');
    });
  }
}

Any idea on how to prevent this?

Thanks!

Version

14.0.1

[TimHoogstrate]

Dear @tmorell,

Thanks for your update. Can you add the output of flutter doctor -v to this issue?

Kind regards,

[tmorell]

Output from doctor

❯ flutter doctor -v
[✓] Flutter (Channel stable, 3.32.2, on macOS 15.5 24F74 darwin-arm64, locale en-US) [973ms]
    • Flutter version 3.32.2 on channel stable at /Users/xxx/fvm/versions/stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 8defaa71a7 (7 days ago), 2025-06-04 11:02:51 -0700
    • Engine revision 1091508939
    • Dart version 3.8.1
    • DevTools version 2.45.1

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0) [2.6s]
    • Android SDK at /Users/xxx/Library/Android/sdk
    • Platform android-35, build-tools 35.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.2) [1,711ms]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 16C5032a
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [9ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2024.3) [9ms]
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)

[✓] VS Code (version 1.100.3) [7ms]
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.112.0

[✓] Connected device (2 available) [5.8s]
    • macOS (desktop) • macos  • darwin-arm64   • macOS 15.5 24F74 darwin-arm64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 137.0.7151.69
    ! Error: Browsing on the local area network for xxxxx’s iPhone. Ensure the device is unlocked and attached with a cable or associated with the same local area
      network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources [749ms]
    • All expected network resources are available.

• No issues found!