Rotate your iOS app with MapKit

I am developing an iOS app . It can provide turn-by-turn navigation. With MKDirectionsRequest, the code can get navigation routes from the device's current location to the destination. CoreLocation updates the current location coordinates of the device.

• How do I check if the device follows directional routes after the device starts moving?
• Any API can change the perspective of the map view from the street view perspective in MKMapView?

Regular GPS provides this function when the driver is driving on the local after the highway.