Core Location Warning Issue - iphone

Question

My core location works but I receive a warning at this line of code. locationManager.delegate = self; The warning is Assigning to 'id' from incompatible type 'phoneLocationViewController *const __strong'. How do I get rid of this warning? Here is my code
.h
#interface phoneLocationViewController : UIViewController {
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation
*)newLocation fromLocation:(CLLocation *)oldLocation;
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error;
#property (nonatomic, retain) CLLocationManager *locationManager;
#property (nonatomic, retain) CLLocation *currentLocation;
.m
#synthesize locationManager, currentLocation;
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation
*)newLocation fromLocation:(CLLocation *)oldLocation {
self.currentLocation = newLocation;
if(newLocation.horizontalAccuracy <= 100.0f) { [locationManager stopUpdatingLocation]; }
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
if(error.code == kCLErrorDenied) {
[locationManager stopUpdatingLocation];
} else if(error.code == kCLErrorLocationUnknown) {
// retry
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error retrieving location"
message:[error description]
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
}
- (void)viewDidLoad
{
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self; (I GET THE WARNING HERE)
[locationManager startUpdatingLocation];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[locationManager stopUpdatingLocation];
[super viewDidUnload];
// Release any retained subviews of the main view.
}

Answer 1

Declare your class as implementing the protocol of the delegate of the location manager.
#interface phoneLocationViewController : UIViewController <CLLocationManagerDelegate> {

Answer 2

You should add the CLLocationManagerDelegate to your interface declaration.
#interface phoneLocationViewController : UIViewController <CLLocationManagerDelegate> {
....
}