Hinzufügen einer Schaltfläche zum Öffnen von Apple Maps, um Wegbeschreibungen zu erhalten

Question

Ich versuche, eine Schaltfläche hinzufügen, die Apple Maps App öffnen wird und Richtungen zu diesem Speicherort geben. Hilfe würde sehr geschätzt werden!

import UIKit 
import MapKit 

class ViewController: UIViewController, MKMapViewDelegate { 

    @IBOutlet weak var mapView: MKMapView! 
    @IBOutlet var searchText: UITextField! 
    var matchingItems: [MKMapItem] = [MKMapItem]() 
    var destination:MKMapItem = MKMapItem() 

    override func viewDidLoad() { 
     super.viewDidLoad()    
     searchText.hidden = true    
    } 

    @IBAction func textFieldReturn(sender: AnyObject) { 
     sender.resignFirstResponder() 
     mapView.removeAnnotations(mapView.annotations)    
    } 

    @IBAction func fiveMiles(sender: AnyObject) {    
     changeDistanceView(8046.72)    
    } 

    @IBAction func tenMiles(sender: AnyObject) {    
     changeDistanceView(16093.4) 
    } 

    @IBAction func fifthteenMiles(sender: AnyObject) {    
     changeDistanceView(24140.2)    
    } 

    @IBAction func twentyMiles(sender: AnyObject) {    
     changeDistanceView(32186.9)    
    } 

    func changeDistanceView(miles: Double) {    
     self.performSearch() 
     let userLocation = mapView.userLocation 

     let region = MKCoordinateRegionMakeWithDistance(
      userLocation.location!.coordinate, miles, miles)    
     mapView.setRegion(region, animated: true) 

    } 

    @IBAction func changeMapView(sender: UIBarButtonItem) {    
     if mapView.mapType == MKMapType.Standard { 
      mapView.mapType = MKMapType.Satellite 
     } else { 
      mapView.mapType = MKMapType.Standard 
     } 

    } 

    func mapView(mapView: MKMapView, didUpdateUserLocation 
     userLocation: MKUserLocation) { 
     mapView.centerCoordinate = userLocation.location!.coordinate 

     self.performSearch() 
     let userLocation = mapView.userLocation 

     let region = MKCoordinateRegionMakeWithDistance(
      userLocation.location!.coordinate, 2000, 2000) 

     mapView.setRegion(region, animated: true) 
    } 

    func performSearch() { 

     matchingItems.removeAll() 
     let request = MKLocalSearchRequest() 
     request.naturalLanguageQuery = searchText.text 
     request.region = mapView.region 

     let search = MKLocalSearch(request: request) 

     search.startWithCompletionHandler({ 
      (response: MKLocalSearchResponse?,error: NSError?) in 

      if error != nil { 
       print("Error occured in search: \(error!.localizedDescription)") 
      } else if response!.mapItems.count == 0 { 
       print("No matches found") 
      } else { 
       print("Matches found") 

       for item in response!.mapItems { 
        print("Name = \(item.name)") 
        print("Phone = \(item.phoneNumber)") 

        self.matchingItems.append(item as MKMapItem) 
        print("Matching items = \(self.matchingItems.count)") 

        let annotation = MKPointAnnotation() 
        annotation.coordinate = item.placemark.coordinate 
        annotation.title = item.name 
        annotation.subtitle = item.phoneNumber 
        self.mapView.addAnnotation(annotation)      
       } 
      } 
     }) 
    } 

    func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? { 
     // Don't want to show a custom image if the annotation is the user's location. 
     guard !annotation.isKindOfClass(MKUserLocation) else { 
      return nil 
     } 

     let annotationIdentifier = "AnnotationIdentifier" 

     var annotationView: MKAnnotationView? 
     if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(annotationIdentifier) { 
      annotationView = dequeuedAnnotationView 
      annotationView?.annotation = annotation 
     } 
     else { 
      let av = MKAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier) 

      annotationView = av 

      } 

     if let annotationView = annotationView { 
      // Configure your annotation view here 
      annotationView.canShowCallout = true 
      let pinImage = UIImage(named: "pawPrint.png") 
      let size = CGSize(width: 30, height: 30) 
      UIGraphicsBeginImageContext(size) 
      pinImage!.drawInRect(CGRectMake(0, 0, size.width, size.height)) 
      let resizedImage = UIGraphicsGetImageFromCurrentImageContext() 
      UIGraphicsEndImageContext() 

      annotationView.image = resizedImage     
     } 

     return annotationView 
    }  

} 

Answer 1

diese Hoffnung Versuchen Sie es funktionieren wird für Sie

func openMap() { 

    let lat1 : NSString = self.placeLat 
    let lng1 : NSString = self.placeLng 

    let latitute:CLLocationDegrees = lat1.doubleValue 
    let longitute:CLLocationDegrees = lng1.doubleValue 

    let regionDistance:CLLocationDistance = 10000 
    let coordinates = CLLocationCoordinate2DMake(latitute, longitute) 
    let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates, regionDistance, regionDistance) 
    let options = [ 
     MKLaunchOptionsMapCenterKey: NSValue(MKCoordinate: regionSpan.center), 
     MKLaunchOptionsMapSpanKey: NSValue(MKCoordinateSpan: regionSpan.span) 
    ] 
    let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil) 
    let mapItem = MKMapItem(placemark: placemark) 
    mapItem.name = "\(self.placeName)" 
    mapItem.openInMapsWithLaunchOptions(options) 

}