how to put current location coordinate to google maps api (camera) - ios

Question

I am using google map api in my app and I want when run my code show me my location automatic in view.
I write my code and run but my code not working and I understand that my location method don't save my coordinate location in two variable.why???
please guide me about it.
#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