Get current Location using googlemaps

[GMSServices provideAPIKey:@"AIzaSyAemkuHXhydxhR286ECVVtspCVTstmgBQM"]; // This key is used for Google Maps.

    // Codes to start tracking the location of the user.

    locationManager = [[CLLocationManager alloc] init];

    locationManager.delegate = self;

    locationManager.distanceFilter = kCLDistanceFilterNone;

    locationManager.desiredAccuracy = kCLLocationAccuracyBest;

    [locationManager startUpdatingLocation];

    return YES;

}

- (void)locationManager:(CLLocationManager *)manager

     didUpdateLocations:(NSArray *)locations {

    CLLocation *clLocation = [locations lastObject];

    NSLog(@"Current latitude %f",clLocation.coordinate.latitude);

    NSLog(@"Current longitude %f",clLocation.coordinate.longitude);

}

Refer:https://developers.google.com/maps/documentation/ios/start