getWatchLocationStream method

@override Stream<Location>? getWatchLocationStream()

The function returns a stream of location updates by listening to a broadcast stream and converting the received data into Location objects. @returns The method is returning a Stream of Location objects.

Implementation

@override
Stream<Location>? getWatchLocationStream() {
  if (_locationStream == null) {
    _locationStream = _locationStreamController.stream;
    _locationEventChannel
        .receiveBroadcastStream("location")
        .map<String>((dynamic event) {
      return event as String;
    }).listen((locationString) {
      Map<String, dynamic> data = jsonDecode(locationString);
      Location location = Location.jsonToObj(data);
      _locationStreamController.add(location);
    });
  }
  return _locationStream;
}