Delegate Error with Core Location - iphone

Question

I set up my own location retrieval class as documented in Apple's Core Location documentation.
MyCLControl.h:
#protocol MyCLControllerDelegate
#required
- (void)locationUpdate:(CLLocation *)location;
- (void)locationError:(NSError *)error;
#end
#interface MyCLController : NSObject <MyCLControllerDelegate, CLLocationManagerDelegate> {
CLLocationManager *locationManager;
id <MyCLControllerDelegate> delegate;
}
#property (nonatomic, retain) CLLocationManager *locationManager;
#property (strong) id <MyCLControllerDelegate> delegate;
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation;
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error;
- (BOOL) connected;
#end
In MyCLController.m, the init and locationManager:didUpdateToLocation:fromlocation method:
- (id) init {
self = [super init];
if (self != nil) {
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
//locationManager.desiredAccuracy = kCLLocationAccuracyKilometer;
}
return self;
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
[self.delegate locationUpdate:newLocation];
}
The way I am calling it is as follows:
- (void)viewDidLoad {
MyCLController *locationController = [[MyCLController alloc] init];
locationController.delegate = locationController.self;
[locationController.locationManager startUpdatingLocation];
}
- (void)locationUpdate:(CLLocation *)location {
NSLog(#"%#", location);
}
I am getting a runtime error [MyCLController locationUpdate:]: unrecognized selector sent to instance once it hits [self.delegate locationUpdate:newLocation].

Answer 1

You have made the MyCLController a delegate of itself? Surely you meant to make the view the delegate instead?
You also need to be checking the delegate supports the method (even though it's required) using:
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
if ([self.delegate respondsToSelector:#selector(locationUpdate:)])
{
[self.delegate locationUpdate:newLocation];
}
}