startTracking method

@override Future<void> startTracking()

Implementation

@override
Future<void> startTracking() async {
  _requireConfigured();
  if (_watch != null) return;
  _watch = _location
      .watch(0)
      .listen(
        onPosition,
        onError: (Object e) => _emit(TrackingErrorEvent(_clock(), '$e')),
      );
}