MapKit center userLocation in view

Question

Using MapKit (iOS 7), when you zoom to the userLocation it will place that location in the center of the "visible portion" of the mapView.

-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
   {
      MKCoordinateRegion mapRegion;
      mapRegion.center = mapView.userLocation.coordinate;
      mapRegion.span.latitudeDelta = 0.2;
      mapRegion.span.longitudeDelta = 0.2;
     [mapView setRegion:mapRegion animated: YES];
   }

This means if you have a navigation bar that it will consider the center to be:

   CGFloat y = (self.mapView.bounds.size.height - self.navigationController.navigationBar.bounds.size.height) / 2.0;
   CGFloat x = self.mapView.bounds.size.width / 2.0;
   CGPoint userLocationPoint = CGPointMake(x, y);

The same is true for the statusBar, toolbars, etc... I can see how this would be advantageous but I'd prefer to not have it in my app. Is there a way to tell the mapView to disregard these insets?

Answer 1

I've solved this by calculating the offset I desire and setting a new region.

// Update iVar when region changes
- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated{
    CGFloat screenHeight = self.view.frame.size.height;
    CGFloat otherControlsHeight = self.toolbarView.frame.size.height + self.collectionView.frame.size.height + self.navigationController.navigationBar.frame.size.height;
    CGFloat pointOffset = (screenHeight - otherControlsHeight);
    CGFloat percentage = pointOffset / screenHeight;
    latitudeOffset = mapView.region.span.latitudeDelta / 2.0 * percentage;

}


// Then whenever you set your centerCoordinate or region
MKCoordinateRegion region = self.mapView.region;
region.center = CLLocationCoordinate2DMake(region.center.latitude - latitudeOffset, region.center.longitude);
[self.mapView setRegion:region animated:YES];