ios core location in swift

1. To show map in mapview

   let initlocation:CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 1.34549354899945, longitude: 103.83823575360742)
   let regionradius:CLLocationDistance = 30000
   let region = MKCoordinateRegionMakeWithDistance(initlocation, regionradius, regionradius)
   singaporeMap.setRegion(region, animated: true)
   

2. Init location manager

   func initloactionManger() {
    locationmanager.delegate = self
    if CLLocationManager.locationServicesEnabled() {
        switch CLLocationManager.authorizationStatus() {
        case .notDetermined, .restricted, .denied:
            locationmanager.requestWhenInUseAuthorization()
        case .authorizedWhenInUse, .authorizedAlways:
            locationEnabled = true
            locationmanager.desiredAccuracy = kCLLocationAccuracyBest
            locationmanager.distanceFilter = 25
            locationmanager.startUpdatingLocation()
            currentlocation = nil
        default:
            return
        }
    }
   }
   

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