使用LongPress事件創建註釋

Question

我試圖用「LongPress事件」向地圖添加註釋。

public void OnLongPress(SKScreenPoint point) 
{ 
    SKCoordinate point1 = new SKCoordinate(point.GetX(), point.GetY()); 

    SKAnnotation anno1 = new SKAnnotation(10); 
    anno1.Location = point1; 
    anno1.MininumZoomLevel = 10; 
    anno1.AnnotationType = SKAnnotation.SkAnnotationTypeBlue; 

    _mapView.AddAnnotation(anno1, SKAnimationSettings.AnimationNone); 

    System.Console.WriteLine(point1); 
    System.Console.WriteLine(point); 
    System.Console.WriteLine(anno1); 
} 

從Console.WriteLines我得到以下信息：

[540.9993896484375,1049.2178955078125] 

SKScreenPoint [x=540.9994, y=1049.2179] 

SKAnnotation [uniqueID=10, location=[540.9993896484375,1049.2178955078125], imagePath=null, imageSize=192, annotationType=33, mininumZoomLevel=10, offset=SKScreenPoint [x=0.0, y=0.0], annotationView=null] 

我從我的屏幕上顯示的座標。但我需要地圖上的座標。

我該怎麼做？ 有人可以幫我嗎？ :)

謝謝。

Answer 1

你需要在屏幕上點轉換爲「協調」通過反向地理編碼：

public void onLongPress(SKScreenPoint point) { 
      SKCoordinate poiCoordinates = mapView.pointToCoordinate(point); 
      final SKSearchResult place = SKReverseGeocoderManager 
        .getInstance().reverseGeocodePosition(poiCoordinates); 

      SKAnnotation annotation = new SKAnnotation(GREEN_PIN_ICON_ID); 

      annotation.setUniqueID(GREEN_PIN_ICON_ID); 
      annotation.setAnnotationType(SKAnnotation.SK_ANNOTATION_TYPE_GREEN); 


      annotation.setLocation(place.getLocation()); 
      annotation.setMininumZoomLevel(5); 
      mapView.addAnnotation(annotation, SKAnimationSettings.ANIMATION_NONE); 
     }