ios - 如何将当前位置坐标放入 google maps api(相机)

Question

我在我的应用程序中使用 google map api，我希望在运行我的代码时自动显示我的位置。我编写并运行了我的代码，但我的代码无法正常工作，我知道我的定位方法不会将我的坐标位置保存在两个变量中。为什么？？？

请指导我。

    @implementation ViewController
    {
        double latitudes;
        double longitudes;
        CLLocationManager *locationManager;
        GMSMapView *mapView_;
    }
    - (void)viewDidLoad
    {
        [super viewDidLoad];
        locationManager = [[CLLocationManager alloc] init];
        [self GetMyLocation];

        // Create a GMSCameraPosition that tells the map to display the

//my friend I don't know why my two variable (latitudes,longitudes) 
        GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitudes longitude:longitudes zoom:14];
        mapView_ = [GMSMapView mapWithFrame:CGRectZero  camera:camera];
        mapView_.myLocationEnabled = YES;
        [mapView_ setMapType:kGMSTypeNormal];
    }
    - (void) GetMyLocation{
        locationManager.delegate = self;
        locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        [locationManager startUpdatingLocation];
    }
    - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
        CLLocation *currentLocation = newLocation;
        if (currentLocation != nil) {
            longitudes = currentLocation.coordinate.longitude;
            latitudes = currentLocation.coordinate.latitude;
        }
    }
    @end

Answer 1

 @implementation ViewController
    {
        double latitudes;
        double longitudes;
        CLLocationManager *locationManager;
        GMSMapView *mapView_;
    }

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        locationManager = [[CLLocationManager alloc] init];
        [self GetMyLocation];

        // Create a GMSCameraPosition that tells the map to display the

//my friend I don't know why my two variable (latitudes,longitudes) 
        GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:0 longitude:0 zoom:14];
        mapView_ = [GMSMapView mapWithFrame:self.view.frame  camera:camera];
        mapView_.myLocationEnabled = YES;
        [mapView_ setMapType:kGMSTypeNormal];
        [self.view addSubView:mapView_];
    }

    - (void) GetMyLocation{
        locationManager.delegate = self;
        locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        [locationManager startUpdatingLocation];
    }

    - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
        CLLocation *currentLocation = newLocation;
        if (currentLocation != nil) {
            longitudes = currentLocation.coordinate.longitude;
            latitudes = currentLocation.coordinate.latitude;
        }

        GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:currentLocation.coordinate.longitude longitude:currentLocation.coordinate.latitude zoom:14];

        [mapView_ animateToCameraPosition:camera];
    }

    @end