AppDelegate.m

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

@interface AppDelegate : UIResponder <UIApplicationDelegate>
{
    CLLocationManager *locationManager;
}
@end

@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    // ロケーションマネージャーを生成する
    locationManager = [[CLLocationManager alloc] init];
    // ロケーションマネージャーを設定する
    [locationManager setDelegate:self];
    [locationManager setDistanceFilter:kCLDistanceFilterNone];
    [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
    // 位置情報の検出をすぐに開始する
    [locationManager startUpdatingLocation];
    
    return YES;
}
- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation 
           fromLocation:(CLLocation *)oldLocation
{
    NSLog(@"%@", newLocation);
}
- (void)locationManager:(CLLocationManager *)manager
       didFailWithError:(NSError *)error
{
    NSLog(@"Could not find location: %@", error);
}
@end