Google Maps iOS SDK, Getting Current Location of user

Question

For my iOS app (building in iOS7),i need to show user's current location when the app load.I am using Google Maps iOS SDK. I am following this Google Map But i can't figure it out. Please help if you go through the path.

Answer 1

Forget my previous answer. It works well if you use the native MapKit.framework.

In fact GoogleMaps for iOS do all the work for you. You don't have to use CoreLocation directly.

The only thing you have to do is to add yourMapView.myLocationEnabled = YES; and the framework will do everything. (Except center the map on you position).

What I have done : I simply followed the steps of the following documentation. And I got a map centered on Sydney but if I zoomed out and moved to my place (if you use a real device, otherwise use simulator tools to center on Apple's location), I could see the blue point on my position.

Now if you want to update the map to follow your position, you can copy Google example MyLocationViewController.m that is included in the framework directory. They just add a observer on the myLocation property to update the camera properties:

@implementation MyLocationViewController {
  GMSMapView *mapView_;
  BOOL firstLocationUpdate_;
}

- (void)viewDidLoad {
  [super viewDidLoad];
  GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.868
                                                          longitude:151.2086
                                                               zoom:12];

  mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
  mapView_.settings.compassButton = YES;
  mapView_.settings.myLocationButton = YES;

  // Listen to the myLocation property of GMSMapView.
  [mapView_ addObserver:self
             forKeyPath:@"myLocation"
                options:NSKeyValueObservingOptionNew
                context:NULL];

  self.view = mapView_;

  // Ask for My Location data after the map has already been added to the UI.
  dispatch_async(dispatch_get_main_queue(), ^{
    mapView_.myLocationEnabled = YES;
  });
}

- (void)dealloc {
  [mapView_ removeObserver:self
                forKeyPath:@"myLocation"
                   context:NULL];
}

#pragma mark - KVO updates

- (void)observeValueForKeyPath:(NSString *)keyPath
                      ofObject:(id)object
                        change:(NSDictionary *)change
                       context:(void *)context {
  if (!firstLocationUpdate_) {
    // If the first location update has not yet been recieved, then jump to that
    // location.
    firstLocationUpdate_ = YES;
    CLLocation *location = [change objectForKey:NSKeyValueChangeNewKey];
    mapView_.camera = [GMSCameraPosition cameraWithTarget:location.coordinate
                                                     zoom:14];
  }
}

@end

With the doc I gave you and the samples included in the framework you should be able to do what you want.