The issue here is when you set the region, the map zoom level “snaps” out to the nearest zoom threshold. (I suspect these zoom thresholds are the amounts of zoom you get when you double-tap or two-finger-tap) So if the map is showing zoom level 1 for instance, and you set the region to that … Read more
To add another implementation to the pile: – (MKMapRect)MKMapRectForCoordinateRegion:(MKCoordinateRegion)region { MKMapPoint a = MKMapPointForCoordinate(CLLocationCoordinate2DMake( region.center.latitude + region.span.latitudeDelta / 2, region.center.longitude – region.span.longitudeDelta / 2)); MKMapPoint b = MKMapPointForCoordinate(CLLocationCoordinate2DMake( region.center.latitude – region.span.latitudeDelta / 2, region.center.longitude + region.span.longitudeDelta / 2)); return MKMapRectMake(MIN(a.x,b.x), MIN(a.y,b.y), ABS(a.x-b.x), ABS(a.y-b.y)); } NB: There are many ways to convert between MKMapRect and MKCoordinateRegion. … Read more