Swift錯誤EXC_BAD_INSTRUCTION

Question

請保留此代碼。我是Swift新手（今天才開始）。這裏有什麼問題？我嘗試搜索堆棧，但只找到Objective-C解決方案。

class ViewController: UIViewController, CLLocationManagerDelegate { 
var locationManager = CLLocationManager() 

@IBOutlet weak var mapView: MKMapView! 

override func viewDidLoad() { 
    super.viewDidLoad() 
    locationManager.delegate = self 

    if (CLLocationManager.locationServicesEnabled()) { 
     locationManager = CLLocationManager() 
     locationManager.delegate = self 
     locationManager.desiredAccuracy = kCLLocationAccuracyBest 
     locationManager.requestAlwaysAuthorization() 
     locationManager.startUpdatingLocation() 
    } 
} 

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 
{ 
    let location = locations.last! as CLLocation 

    let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude) 
    let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)) 

    mapView.setRegion(region, animated: true) 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 
} 

Answer 1

你忘了在故事板地圖視圖鉤在代碼中你mapView出口，大概。