從GoogleMaps API提取數據後，註解不顯示在MKMapView上

Question

我試圖從GoogleMaps API提取數據後在MKMapView上顯示註解。 HTTP請求成功，我可以在Xcode底部的控制檯中看到結果。但是，當試圖在地圖上顯示註釋時，它不會返回任何內容。只有當前位置（藍點）。這裏是代碼：

func plotPositions(_ data: [Any]) { 

    //Remove any existing custom annotations but not the user location blue dot 
    for annotation: MKAnnotation in mapView.annotations { 

     if (annotation is MapPoint) { 

      mapView.removeAnnotation(annotation) 
     } 
    } 

    //Loop through the array of places returned from the Google API 
    for i in 0..<data.count { 

     //Retrieve the NSDictionary object in each index of the array 
     let place: [AnyHashable: Any]? = (data[i] as? [AnyHashable: Any]) 

     //There is a specific NSDictionary object that gives us the location info 
     let geo: [AnyHashable: Any]? = (place?["geometry"] as? [AnyHashable: Any]) 

     // Get the lat and long for the location 
     let loc: [AnyHashable: Any]? = (geo?["location"] as? [AnyHashable: Any]) 

     //Get the name and address info for adding to a pin 
     let name: String? = (place?["name"] as? String) 
     let vicinity: String? = (place?["vicinity"] as? String) 

     // Create a special variable to hold this coordinate info 
     var placeCoord: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 0.0, longitude: 0.0) 

     // Set the lat and long 
     if let latitude = loc?["lat"] as? CDouble, let longitude = loc?["lat"] as? CDouble { 
      placeCoord.latitude = latitude 
      placeCoord.longitude = longitude 
     } 

     //Create a new annotation 
     let placeObject = MapPoint(name: name!, address: vicinity!, coordinate: placeCoord) 
     mapView.addAnnotation(placeObject) 
    } 
} 

任何想法，爲什麼它不顯示？我錯過了什麼嗎？

謝謝！

Answer 1

let placeObject = CustomPointAnnotation() 
placeObject.coordinate = placeCoord 
placeObject.title = name 
placeObject.subtitle = vicinity 

嘗試使用CustomPointAnnotation對象用於註解