xcode4.2 - I can't update location IOS -


i'm trying city name of location, use code:

- (void)viewdidload {      [super viewdidload];    cllocationmanager *locationmanager =[[cllocationmanager alloc] init];     locationmanager.delegate = self;     locationmanager.desiredaccuracy = kcllocationaccuracynearesttenmeters;     [locationmanager startupdatinglocation];       // additional setup after loading view. }  - (void)didreceivememorywarning {     [super didreceivememorywarning];      // dispose of resources can recreated. }  //implementamos los metodos delegados de cllocationmanager.   - (void)locationmanager:(cllocationmanager *)manager didupdatetolocation:(cllocation        *)newlocation fromlocation:(cllocation *)oldlocation {     // creates mkreversegeocoder find placemark using found coordinates      clgeocoder * geocoder = [[clgeocoder alloc] init];     [geocoder reversegeocodelocation:newlocation completionhandler:^(nsarray *placemarks, nserror     *error) {         nsstring * location = ([placemarks count] > 0) ? [[placemarks objectatindex:0] locality] : @"not found";         _ciudadlabel.text=location;       }]; }   // delegate method called if error occurs in locating current location - (void)locationmanager:(cllocationmanager *)manager didfailwitherror:(nserror *)error {     nslog(@"locationmanager:%@ didfailwitherror:%@", manager, error); }

but when execute application, message says if want allow location disapear , don't execute:

    - (void)locationmanager:(cllocationmanager *)manager didupdatetolocation:(cllocation *)newlocation fromlocation:(cllocation *)oldlocation {     // creates mkreversegeocoder find placemark using found coordinates      clgeocoder * geocoder = [[clgeocoder alloc] init];     [geocoder reversegeocodelocation:newlocation completionhandler:^(nsarray *placemarks, nserror *error) {         nsstring * location = ([placemarks count] > 0) ? [[placemarks objectatindex:0] locality] :   @"not found";         _ciudadlabel.text=location;       }]; }

why location doesn't start?

thanks


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