iOS Swift MKMapView刪除地圖圖塊

Question

在我的應用程序中，我想在MKMapView上顯示註釋，但我不希望用戶看到地圖圖塊，我希望它們是完全黑色的。 我怎樣才能達到這樣的效果？

Answer 1

替換地圖圖塊的機制基於MKOverlayRenderer類。您需要製作自己的MKOverlayRenderer子類，您可以在其中自定義地圖圖塊的顯示。 在您使用地圖的ViewController中，您需要爲您的MKMapView添加一個覆蓋層來觸發MKMapViewDelegate的渲染方法。

示例代碼：

//Subclass of MKOverlayRenderer to tint the tiles 
class MyCustomOverlayRenderer: MKOverlayRenderer { 
    override func draw(_ mapRect: MKMapRect, zoomScale: MKZoomScale, in context: CGContext) { 
     let drawRect = self.rect(for: mapRect) 
     context.setFillColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 1.0) 
     context.fill(drawRect) 
    } 
} 

//Custom View Controller where the map can be found 
class ViewController: UIViewController { 

     @IBOutlet weak var mapView: MKMapView! 

     override func viewDidLoad() { 
      super.viewDidLoad() 

      self.mapView.delegate = self 

      let tiles = MKTileOverlay(urlTemplate: nil) 
      tiles.canReplaceMapContent = true 
      self.mapView.add(tiles) 
     } 

     //Custom method to add an annotation onto your mapView 
     @IBAction func mapViewTapped(_ sender: Any) { 

      let annotation = MyCustomAnnotation(coordinate: self.mapView.centerCoordinate, title: "MyAnnotation") 
      self.mapView.addAnnotation(annotation) 
     } 
} 

extension ViewController : MKMapViewDelegate 
{ 
    //use your custom renderer to render all tiles 
    func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer { 
     return MyCustomOverlayRenderer(overlay: overlay) 
    } 

    //show a pin in the middle of you map 
    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? { 

     return nil 
    } 
} 

，其結果是：