Objective-C 緯度・経度・時間取得表示







#import "ViewController.h"

#import  <CoreLocation/CoreLocation.h>

@interface ViewController () <CLLocationManagerDelegate>

@property (nonatomic, retain) CLLocationManager *locationManager;

// 緯度

@property (weak, nonatomic) IBOutlet UILabel *labelLatitude;

// 経度

@property (weak, nonatomic) IBOutlet UILabel *labelLongitude;

// 時間

@property (weak, nonatomic) IBOutlet UILabel *labelTime;


@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.


    // ユーザから位置情報の利用について承認

    if (nil == self.locationManager) {

         self.locationManager = [[CLLocationManager alloc] init];

        // iOS 8以上

        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {

            // NSLocationWhenInUseUsageDescriptionに設定したメッセージでユーザに確認

            [ self.locationManager requestWhenInUseAuthorization];

            // NSLocationAlwaysUsageDescriptionに設定したメッセージでユーザに確認

            //[locationManager requestAlwaysAuthorization];





    if (nil == self.locationManager)

        self.locationManager = [[CLLocationManager alloc] init];

    self.locationManager.delegate = self;

    // 更新間隔はdistanceFilterプロパティ

    //self.locationManager.distanceFilter = 500;


    // 情報の更新を開始すれば、位置情報を取得

    [self.locationManager startUpdatingLocation];



- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.


// GPSで位置情報の更新があったときに呼ばれる

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {


    CLLocation* location = [locations lastObject];

    // 時間

    NSDate* timestamp = location.timestamp;


    NSLog(@"緯度 %+.6f, 経度 %+.6f\n", location.coordinate.latitude,



    // 緯度 %+.6f

    self.labelLatitude.text = [NSString stringWithFormat:@"%+.6f",  


    // 経度 %+.6f

    self.labelLongitude.text = [NSString stringWithFormat:@"%+.6f",


    // 日時時間

    NSDateFormatter *df = [[NSDateFormatter alloc] init];

    [df setDateFormat:@"yyyy/MM/dd HH:mm:ss"];

    self.labelTime.text = [df stringFromDate:timestamp];




GitHub GpsLocation




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コメント: 3
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