首先头文件应继承CLLocationManagerDelegate.

并:#import <CoreLocation/CoreLocation.h>

响应事件中写如下代码:

CLLocationManager *_locManager = [[CLLocationManager alloc] init]; 

[_locManager setDelegate:self]; 

[_locManager setDesiredAccuracy:kCLLocationAccuracyBest];    

[_locManager startUpdatingLocation];

重载

#pragma mark -

#pragma mark Location manager

- (void)locationManager:(CLLocationManager *)manager

    didUpdateToLocation:(CLLocation *)newLocation

           fromLocation:(CLLocation *)oldLocation

{

    CLLocationCoordinate2D loc = [newLocation coordinate];

    NSString *lat =[NSString stringWithFormat:@"%f",loc.latitude];//get latitude

    NSString *lon =[NSString stringWithFormat:@"%f",loc.longitude];//get longitude    

    NSLog(@"%@ %@",lat,lon);

}