title: My location button not appearing in view (Google maps SDK, ios)
body: <p>Here is my mapViewController.m file:</p>
  
  <pre><code>@interface MapViewController()
  
  @property (strong, nonatomic) GMSMapView* mapView;
  @property (weak, nonatomic) IBOutlet GMSMapView *subView;
  
  @end
  
  @implementation MapViewController
  
      - (void) viewDidLoad{
      // Create a GMSCameraPosition that tells the map to display the
      // coordinate -33.86,151.20 at zoom level 6.
      GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.86
                                                          longitude:151.20
                                                               zoom:6];
  
      _mapView = [GMSMapView mapWithFrame:self.view.bounds camera:camera];
  
      _mapView.myLocationEnabled = YES;
  
      _mapView.settings.compassButton = YES;
      _mapView.settings.myLocationButton = YES;
  
      [self.subView addSubview:_mapView];
  }
  </code></pre>
  
  <p>My problem is that the my location button doesn't appear, any help appreciated! :)
  Please tell me if you need to see more of my project.</p>