Apple Mapkitのフライオーバーをアニメーション化する方法は？

Question

私は高架道路アニメーションを作りたいアップルMapkit https://developer.apple.com/videos/play/wwdc2015/206/ 上WWDCセッションを見ては31:33でした。カメラの角度を上から下に変えて回転させます。しかし、私はいくつかのコードを書いた、それはクラッシュします。私の助けを借りて、私のコードに間違っていることを教えてください、ありがとう！

import UIKit 
import CoreLocation 
import MapKit 

class Flyover: UIViewController, MKMapViewDelegate { 
    var coordinate = CLLocationCoordinate2D(latitude: 40.7484405, longitude: -73.9856644) 
    let distance : CLLocationDistance = 700 
    let pitch : CGFloat = 65 
    let heading = 90.0 
    var camera: MKMapCamera? 




    @IBOutlet var mapView: MKMapView! 



    override func viewDidLoad() { 
     super.viewDidLoad() 
     mapView.mapType = .SatelliteFlyover 
     let camera = MKMapCamera(lookingAtCenterCoordinate: coordinate,fromDistance: distance,pitch: pitch,heading: heading) 
     mapView.camera = camera 

     //I want the animation to play automatically as soon as the user is in the view. 
     UIView.animateWithDuration(10.0, animations: { 
      self.camera!.heading += 180 
      self.camera!.pitch = 25 
      self.mapView.camera = self.camera! 
      }) 



    } 

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



    /* 
    // MARK: - Navigation 

    // In a storyboard-based application, you will often want to do a little preparation before navigation 
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 
     // Get the new view controller using segue.destinationViewController. 
     // Pass the selected object to the new view controller. 
    } 
    */ 

} 

Answer 1

あなたはほぼそこにいました。新しいカメラを作ってみてください。

mapView.camera = MKMapCamera(lookingAtCenter: pinLocation, fromDistance: 2000, pitch: 0, heading: 0) 

let pinLocation = CLLocationCoordinate2D(latitude: latitude, longitude: longitude) 

let rotationCamera = MKMapCamera(lookingAtCenter: pinLocation, fromDistance: 2000, pitch: 75, heading: 180) 

UIView.animate(withDuration: 10, delay: 0, options: .curveEaseInOut, animations: { 
      self.mapView.camera = rotationCamera 
     }, completion: nil)