CODEWITHSUNDEEP
flutterfluttermap
Vincenzo
Vincenzo

Reputation: 6418

How to get flutter_map's MapController() stream events? Flutter

I'm trying to listen for MapEvents from MapController()as suggested here https://github.com/fleaflet/flutter_map/issues/877#issuecomment-825545206 as

@override
  void initState() {
    super.initState();

    _mapController.mapEventStream.where((event) => event is MapEventMoveEnd).listen((event) {
      // TODO: You code
    });
  }

the problem is that I don't have mapEventStream available option in _mapController. Is it just a package version problem or what am I doing wrong?? I'm still using flutter_map: ^0.10.1 as I'd have to update many other packages..

Upvotes: 0

Views: 948

Answers (1)

atom
atom

Reputation: 16

Yes, your package version is too old to make use of that feature. You need at least 0.11.0 to use mapEventStream, though you may be able to get away with 0.10.1+1 depending on your use case.

Looking at the commit history for lib/src/map/map.dart (the file with MapController code), two commits are of interest:

  • July 9, 2020: on line 62, a MapPosition stream called position was added.
  • Jan 29, 2021: also on line 62 position is changed to mapEventStream and its stream type changed to emit MapEvent objects.

Looking now at the flutter_map version history, the earliest version that includes the first commit mentioned above is 0.10.1+1, and to get the latter form you need 0.11.0.

I have tested the existence of both getters in their respective versions in my editor.

Upvotes: 0

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