public IObservable <CompassReading> WhenReadingTaken()
=> this.readOb ??= Observable.Create <CompassReading>(ob =>
{
var handler = new EventHandler <CLHeadingUpdatedEventArgs>((sender, args) =>
{
var accuracy = this.FromNative(args.NewHeading.HeadingAccuracy);
var read = new CompassReading(accuracy, args.NewHeading.MagneticHeading, args.NewHeading.TrueHeading);
ob.OnNext(read);
});
var lm = new CLLocationManager
{
DesiredAccuracy = CLLocation.AccuracyBest,
HeadingFilter = 1
};
lm.UpdatedHeading += handler;
lm.StartUpdatingHeading();
return(() =>
{
lm.StopUpdatingHeading();
lm.UpdatedHeading -= handler;
});
})
.Publish()
.RefCount();
public IObservable <CompassReading> WhenReadingTaken()
=> this.readOb ??= Observable.Create <CompassReading>(ob =>
{
var handler = new TypedEventHandler <Compass, CompassReadingChangedEventArgs>((sender, args) =>
{
var accuracy = this.FromNative(args.Reading.HeadingAccuracy);
var read = new CompassReading(accuracy, args.Reading.HeadingMagneticNorth, args.Reading.HeadingTrueNorth ?? 0);
ob.OnNext(read);
});
this.compass.ReadingChanged += handler;
return(() => this.compass.ReadingChanged -= handler);
})
.Publish()
.RefCount();