Objective C: strange error when init a variable declared in my header file

I am getting when I add this line:

locMan = [[CLLocationManager alloc] init];

To the viewDidLoad method inside of my .m file I get some errors that I have never see开发者_如何学Gon before. Here are the errors:

I cannot for the life of me figure out why adding that line is causing problems. If anyone can shed some light I would be very grateful.

I have this header file:

#import <UIKit/UIKit.h>
#import "CoreLocation/CoreLocation.h"


@interface RobotWarsViewController : UIViewController 
<CLLocationManagerDelegate> {

    CLLocationManager *locMan;

    // Current Location View
    IBOutlet UIView  *currentLocationView;
    IBOutlet UILabel *currentLocationLabel;


}

@property (assign, nonatomic) UIView  *currentLocationView;
@property (assign, nonatomic) UILabel *currentLocationLabel;
@property (assign, nonatomic) CLLocationManager *locMan;                           

- (IBAction)dropEMP:(id)sender;
- (IBAction)armEMP:(id)sender;

@end

And this .m file:

#import "RobotWarsViewController.h"

@implementation RobotWarsViewController


@synthesize locMan;
@synthesize currentLocationView;
@synthesize currentLocationLabel;

- (void)viewDidLoad {
    [super viewDidLoad];

    locMan = [[CLLocationManager alloc] init];
//  locMan.delegate = self;

}

- (IBAction)dropEMP:(id)sender{

    NSLog(@"Boo");

}

- (IBAction)armEMP:(id)sender{

    NSLog(@"boo");

}

- (void)locationManager:(CLLocationManager *)manager 
    didUpdateToLocation:(CLLocation *)newLocation 
           fromLocation:(CLLocation *)oldLocation {

    NSLog(@"location update");

}



- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)dealloc {
    [super dealloc];
    [currentLocationView release];
    [currentLocationLabel release];

}

@end

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Did you add the CoreLocation framework to your project?

Expand the Frameworks group, and see if CoreLocation is listed there. If not, right click on it, and add.

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You didn’t add the CoreLocation framework to your project.