How to set boundaries on Map in MapKit IOS8 and Swift

Question

After a lot of research on this useful website, i put the guns down...

I have a map with a lot of annotations. I will set boundaries in order to users stays on the wanted place. All documentations I've found were for Objective C and previous ios.

I'm looking for a way to do it for IOS 8 and Swift pls.

Answer 1

i didn't check it but logically the answer here will work for you.you can reset the region between the desired Geo Coordinates by calculating it exceed the boundaries.am no good with swift but you can try bellow code

func mapView(mapView: MKMapView!, regionDidChangeAnimated animated: Bool) {

    if ((mapView.region.span.latitudeDelta > 15.589921 ) || (mapView.region.span.longitudeDelta > 175.836914) ) {

        var centerCoord:CLLocationCoordinate2D = CLLocationCoordinate2DMake(-41.162114, 172.836914);
        var spanOfNZ:MKCoordinateSpan = MKCoordinateSpanMake(13.589921, 14.062500);
        var NZRegion:MKCoordinateRegion = MKCoordinateRegionMake(centerCoord, spanOfNZ);
        mapView .setRegion(NZRegion, animated: true);

    }
}