protected override IEnumerable <Datum> Poll(CancellationToken cancellationToken)
{
List <Datum> data = new List <Datum>();
NSError error;
NSDate dateOfBirth = HealthStore.GetDateOfBirth(out error);
if (error == null)
{
if (dateOfBirth == null)
{
throw new Exception("User has not provided -- or has not allowed access to -- their date of birth.");
}
else
{
data.Add(new BirthdateDatum(DateTimeOffset.Now, new DateTimeOffset(dateOfBirth.ToDateTime())));
}
}
else
{
throw new Exception("Error reading date of birth: " + error.Description);
}
return(data);
}
void UpdateUsersAge()
{
NSError error;
NSDate dateOfBirth = HealthStore.GetDateOfBirth(out error);
if (error != null)
{
Console.WriteLine("An error occured fetching the user's age information. " +
"In your app, try to handle this gracefully. The error was: {0}", error);
return;
}
if (dateOfBirth == null)
{
return;
}
var now = NSDate.Now;
NSDateComponents ageComponents = NSCalendar.CurrentCalendar.Components(NSCalendarUnit.Year, dateOfBirth, now,
NSCalendarOptions.WrapCalendarComponents);
nint usersAge = ageComponents.Year;
ageHeightValueLabel.Text = string.Format("{0} years", usersAge);
}