为 UWP 必应地图中的地图图标纬度值指定属性路径

Question

我正在尝试在UWP版本的必应地图中对MapIcon的位置进行动画处理。 我在指定用作图标中心值的GeoPoint Latitude组件(double值(的PropertyPath时遇到问题：

        MapIcon mapIcon1 = new MapIcon();
        mapIcon1.Location = myMap.Center;
        mapIcon1.NormalizedAnchorPoint = new Point(0.5, 1.0);
        mapIcon1.Title = "My Friend";
        mapIcon1.Image = mapIconStreamReference;
        mapIcon1.ZIndex = 0;
        myMap.MapElements.Add(mapIcon1);
        double centerLatitude = myMap.Center.Position.Latitude;
        double centerLongitude = myMap.Center.Position.Longitude;
        Storyboard storyboard = new Storyboard();
        DoubleAnimation animation = new DoubleAnimation();
        animation.From = centerLatitude;
        animation.To = centerLatitude + 100f;
        animation.Duration = new Duration(new TimeSpan(0, 0, 0, 5));
        animation.EnableDependentAnimation = true;
        storyboard.Children.Add(animation);
        //Storyboard.SetTargetProperty(animation, "(MapIcon.Location)(Geopoint.Position)(BasicGeoposition.Latitude)");
        //Storyboard.SetTargetProperty(animation, "(MapIcon.Location)(MapControl.Center)(Geopoint.Position)(BasicGeoposition.Latitude)");
        //Storyboard.SetTargetProperty(animation, "(MapIcon.Location)(BasicGeoposition.Latitude)");
        //Storyboard.SetTargetProperty(animation, "(MapIcon.Location.Latitude)");
        Storyboard.SetTarget(storyboard, mapIcon1);
        storyboard.Begin();

注释

掉的语句都不起作用;它们都会导致"无法解析指定对象上的 TargetProperty"错误。 我对"(MapIcon.Location)(Geopoint.Position)(BasicGeoposition.Latitude)"第一次尝试特别有希望，但没有运气。

(我能够成功地对地图图标的颜色属性进行动画处理。

Answer 1

>Storyboard.SetTargetProperty以应用动画的依赖项属性为目标。因此，要将动画应用于"纬度"是不可能的。

你必须自己做。例如，使用调度程序计时器。