@IBOutlet var navigationBar: UINavigationItem!
이렇게 연결을 해둔다음에
let currentLocationItem = MKUserTrackingBarButtonItem.init(mapView: mapView) navigationBar.setRightBarButtonItem(currentLocationItem, animated: true) currentLocationItem.performSelector(currentLocationItem.action) // force click
라고 호출하면 된다.