更改 GMSMarker 图标不起作用

Question

我正在尝试将GMSMarker 图标更改为Moa，但标记仍显示默认图标。这是我的代码：

   override func viewDidLoad() {
        super.viewDidLoad()
        locationmanager.delegate = self
        let authorizationStatus = CLLocationManager.authorizationStatus()
        if(authorizationStatus == .authorizedWhenInUse || authorizationStatus == .authorizedAlways) {
            locationmanager.startUpdatingLocation()
            MapView.isMyLocationEnabled = true
            MapView.settings.myLocationButton = true
        } else {
            locationmanager.requestWhenInUseAuthorization()
        }
        MapView.camera = GMSCameraPosition.camera(withLatitude: 32.4279, longitude: 53.6880, zoom: 5)
        MapView.delegate = self
        prepareMapMarkers()
    }        
    func prepareMapMarkers(){
        let marker = GMSMarker(position: CLLocationCoordinate2D(latitude: CLLocationDegrees(malls[0].lat), longitude: CLLocationDegrees(malls[0].long)))
        marker.map = MapView
        moa.onSuccess = { image in
            print(image)
            marker.icon = image.images?[0]
            return image
        }
        moa.url = "http://www.w3schools.com/css/img_fjords.jpg"
    }

控制台

<UIImage: 0x60000009e050>, {600, 400}

该图像仅用于测试。为什么它不起作用？

Answer 1

试试这个！它对我有用

let pin = UIImage(named: "maps_icon_location")!.imageWithRenderingMode(.AlwaysTemplate)
                                marker.icon = pin

Answer 2

您正试图在添加标记后更改标记的图像。我不确定 Google Maps SDK 是否支持这一点，但这不是一个好主意。相反，下载您的照片，然后创建标记并将其添加到地图中：

moa.onSuccess = { image in
    let marker = GMSMarker(position: CLLocationCoordinate2D(latitude: CLLocationDegrees(malls[0].lat), longitude: CLLocationDegrees(malls[0].long)))
    marker.icon = image.images?[0]
    marker.map = self.MapView
}
moa.url = "http://www.w3schools.com/css/img_fjords.jpg"