iOS ช่วยด้วยคะ เรื่อง Get cullentlocation บน google map sdk แล้วค่าที่ได้เป็น 0.0000 ตลอดเลยคะ

#import "Googlemap.h"
#import <GoogleMaps/GoogleMaps.h> 
#import <CoreLocation/CoreLocation.h>



@interface Googlemap ()
{
    GMSMapView *mapView_;
 
}


@end

@implementation Googlemap{
    
    CLLocationManager *locationManager;
    
}
@synthesize inLat;
@synthesize inLong;
@synthesize inName;



GMSMapView *mapView_;

- (void)loadView {
   ............
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    locationManager = [[CLLocationManager alloc] init];
    NSLog(@"locationServicesEnabled: %@", [CLLocationManager locationServicesEnabled] ? @"YES":@"NO");
  
    CLLocationManager *lm = [[CLLocationManager alloc] init];
    lm.delegate = self;
    lm.desiredAccuracy = kCLLocationAccuracyBest;
    lm.distanceFilter = kCLDistanceFilterNone;
    [lm startUpdatingLocation];
    //[lm stopUpdatingLocation];
    
    CLLocation *location = [lm location];
    
    CLLocationCoordinate2D coord;
    coord.longitude = location.coordinate.longitude;
    NSString *ss= [NSString stringWithFormat:@"%.8f",coord.longitude ];
    
    coord.latitude = location.coordinate.latitude;
    NSString *aa= [NSString stringWithFormat:@"%.8f",coord.latitude ];
    NSLog(@"oooooooo2");
    NSLog(@"%@",ss);
    NSLog(@"%@",aa);
    NSLog(@"kkkkkkkkk2");


}




- (IBAction)getLocation:(id)sender 
{
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    
    [locationManager startUpdatingLocation];
    
}




#pragma mark - CLLocationManagerDelegate
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"didFailWithError: %@",error);
    UIAlertView *errorAlert = [[UIAlertView alloc] initWithTitle:@"ERROR" message:@"Failed" delegate:nil
                                               cancelButtonTitle:@"OK" otherButtonTitles:nil];[errorAlert show];
}


- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    
    NSLog(@"vvvvvvvv");
    [manager stopUpdatingLocation];
    NSLog(@"%@",newLocation.coordinate.latitude);
    NSLog(@"%@",newLocation.coordinate.longitude);
}




@end