iphone - MKMapView not centered on pin -

I have an mkmapview that I am currently adding a pin, but for some reason when I [mapView SetRegion]: [DetailItem coordinateRegion] Animated: Yes]; Pin is on the off-center map (on the right side of the screen). is the code for [deailItem coordinateRegion] :

  - (MKCoordinateRegion) coordinate reagulation {MKCoordinateRegion area = {{0.0, 0.0}, {0.0, 0.0}}; Region.center = self.coordinate; Region.span.longitudeDelta = 0.0075f; Region.span.latitudeDelta = 0.0075f; Return (area); }  

I am setting the center of the coordinate area for the X, Y coordinates of the object, so why is the off-center on the map? I think there is something that I'm missing here ...

:: Val ::

MKMapView is your limit? After you select the annotation ( [mapView select annotation: annotation animated: yes]; ), you should not have to do anything.

It may be that MKMapView is larger than the area of ​​your actual viewing map is centered, but the view is not visible.