Question

在我的WP7（芒果）应用程序中，我需要将用户从一个点导航到另一个点。我知道有一个Map控件可以让你在上面绘制工作人员，但是你如何要求它为你绘制路径？（根据指定的目的地和用户的当前位置 - 但这会不断变化，所以如果他继续这样做，你如何更新路线？）

Answer 1

要使用用户当前位置更新地图，请使用GeoCoordinateWatcher并更新数据绑定图钉的位置。请记住将最小距离设置为低，例如5米。

可以使用此XAML模板创建类似于bing地图上的图钉：

<maps:Pushpin Background="{StaticResource PushpinLocationBrush}"
              Location="{Binding MyLocation}">
    <maps:Pushpin.Template>
        <ControlTemplate>
            <Grid>
                <Rectangle Width="15"
                           Height="15"
                           Margin="0"
                           Fill="Black">
                    <Rectangle.Projection>
                        <PlaneProjection CenterOfRotationX="0"
                                         LocalOffsetX="-2"
                                         LocalOffsetY="5"
                                         RotationZ="45" />
                    </Rectangle.Projection>
                </Rectangle>
                <Ellipse Width="7"
                         Height="7"
                         Margin="0"
                         HorizontalAlignment="Center"
                         VerticalAlignment="Center"
                         Fill="Orange"
                         RenderTransformOrigin="0.339,0.232"
                         StrokeThickness="0" />
            </Grid>
        </ControlTemplate>
    </maps:Pushpin.Template>
</maps:Pushpin>

使用Bing Maps可以获取地址的GeoCoordinate。您可以在此处详细了解Bing服务：http://msdn.microsoft.com/en-us/library/cc980922.aspx - 您需要的是GeoCodeService

绘制路径相当复杂，特别是如果您希望它遵循道路。为此，您需要Bing Maps Route Service。

将服务添加到Visual Studio，名称为RouteServiceReference，然后您可以使用以下代码获取路径片段，并将它们添加到地图中。下面的XAML反映了我将片段添加到的控件：

List<GeoCoordinate> locations = new List<GeoCoordinate>();

RouteServiceClient routeService = new RouteServiceClient("BasicHttpBinding_IRouteService");

routeService.CalculateRouteCompleted += (sender, e) =>
{
    var points = e.Result.Result.RoutePath.Points;
    var coordinates = points.Select(x => new GeoCoordinate(x.Latitude, x.Longitude));

    var routeColor = Colors.Blue;
    var routeBrush = new SolidColorBrush(routeColor);

    var routeLine = new MapPolyline()
    {
        Locations = new LocationCollection(),
        Stroke = routeBrush,
        Opacity = 0.65,
        StrokeThickness = 5.0,
    };

    foreach (var location in points)
    {
        routeLine.Locations.Add(new GeoCoordinate(location.Latitude, location.Longitude));
    }

    RouteLayer.Children.Add(routeLine);
};

RouteBingMap.SetView(LocationRect.CreateLocationRect(locations));

routeService.CalculateRouteAsync(new RouteRequest()
{
    Credentials = new Credentials()
    {
        ApplicationId = "YOURBINGMAPSKEYHERE"
    },
    Options = new RouteOptions()
    {
        RoutePathType = RoutePathType.Points
    },
    Waypoints = new ObservableCollection<Waypoint>(
        locations.Select(x => new Waypoint()
        {
            Location = x.Location
        }))
});

在Bing Maps控件上计算并绘制路线

1 个答案: