formattedDistanceFromCurrentLocationWithUnits

gistfile1.m

BOOL useMetricUnits = NO;

- (NSString *)formattedDistanceFromCurrentLocationWithUnits:(SM3DARPointOfInterest *)poi
{
    NSString *formatted;    
    CGFloat distance;
    
    if (useMetricUnits)
    {
        // Metric.
        
        distance = [poi distanceInMetersFromCurrentLocation];
        
        if (distance >= 1000.0)
        {
            formatted = [NSString stringWithFormat:@"%.1f km", (distance / 1000.0)];
        }
        else
        {
            formatted = [NSString stringWithFormat:@"%i m", (int)(distance)];
        }
    }
    else
    {
        // Imperial.
        
        distance = [poi distanceInMilesFromCurrentLocation];
        
        if (distance < 0.189)
        {
            formatted = [NSString stringWithFormat:@"%i ft", (int)(distance * 5280)];
        }
        else
        {
            formatted = [NSString stringWithFormat:@"%.1f mi", distance];
        }
    }
    
	return formatted;
}