iPhone - CLHeading to find direction

Question

In my iPhone application, I'm using using CLLocationManager to find the direction in which my iphone is pointing to. I'm using the property "heading". Its giving me x,y and z values. How can I find from these values in which direction (north or south or east or west) I'm currently pointing to?

Answer 1

heading is a CLHeading object. As one look in the documentation would have told you, it also has properties for the true and magnetic headings in degrees.

Answer 2

you should use method [locationManager startUpdateHeading] to enable get the angle relative to the geographic North Pole or magnetic North Pole. Then you can get the value in

 - (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading 
{
   NSLog(@"%f",newHeading.trueHeading);
}