Start position stream after enabling location service

[mvanbeusekom]

Fixes a bug where a new instance of the GeolocationManager is created and results from the location service resolution process are not delivered to the correct instance, resulting in the location stream to be cancelled or not started at all.

Fixes #1149

Pre-launch Checklist

• I made sure the project builds.
• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy, or this PR is does not need version changes.
• I updated CHANGELOG.md to add a description of the change.
• I updated/added relevant documentation (doc comments with ///).
• I rebased onto main.
• I added new tests to check the change I am making, or this PR does not need tests.
• I made sure all existing and new tests are passing.
• I ran dart format . and committed any changes.
• I ran flutter analyze and fixed any errors.

[RabbitQuestBV]

Hi Maurits,

Singletons for the win.

Looks great. When is it expected that this is available on the Flutter Geolocator Package?
(https://pub.dev/packages/geolocator/versions)

Kind regards,
Bart

[mvanbeusekom]

Hahaha in this case definitely ;).

The update has been published (https://pub.dev/packages/geolocator_android/changelog) and should automatically be downloaded if you run a flutter pub upgrade. To verify check the contents of the pubspec.lock file and look for the version of the geolocator_android package (this should be 4.5.5).