Zoom to fit region for all annotations - ending up zooming in between annotations

Question

I have a problem with fitting all my annotations to the screen... sometimes it shows all annotations, but some other times the app is zooming in between the two annotations

Answer 1

Instead of:

region.span.latitudeDelta = meter / 111319.5;
 region.span.longitudeDelta = 0.0;
 region.center.latitude = (SouthWest.latitude + NorthEast.latitude) / 2.0;
 region.center.longitude = (SouthWest.longitude + NorthEast.longitude) / 2.0;

Try adding:

region.span.latitudeDelta = fabs(NorthEast.latitude - SouthWest.latitude) * 1.2; 
region.span.longitudeDelta = fabs(SouthWest.longitude - NorthEast.longitude) * 1.2; 
region.center.latitude = NorthEast.latitude - (NorthEast.latitude - SouthWest.latitude) * 0.5;
region.center.longitude = NorthEast.longitude + (SouthWest.longitude - NorthEast.longitude) * 0.5;

And removing:

CLLocationDistance meter = [locSouthWest distanceFromLocation:locNorthEast];