protected override Task <List <Datum> > PollAsync(CancellationToken cancellationToken)
{
List <Datum> data = new List <Datum>();
NSError error;
HKWheelchairUseObject wheelChair = HealthStore.GetWheelchairUse(out error);
if (error == null)
{
if (wheelChair.WheelchairUse == HKWheelchairUse.NotSet)
{
data.Add(new WheelChairUseDatum(DateTimeOffset.Now, WheelChairUse.NotSet));
}
else if (wheelChair.WheelchairUse == HKWheelchairUse.No)
{
data.Add(new WheelChairUseDatum(DateTimeOffset.Now, WheelChairUse.No));
}
else if (wheelChair.WheelchairUse == HKWheelchairUse.Yes)
{
data.Add(new WheelChairUseDatum(DateTimeOffset.Now, WheelChairUse.Yes));
}
else
{
throw new Exception("User has not provided -- or has not allowed access to -- their wheel chair use status.");
}
}
else
{
throw new Exception("Error reading wheel chair use status: " + error.Description);
}
return(Task.FromResult(data));
}