Windows Phone 离线路由

Question

我正在尝试制作具有离线路由的 windows phone 应用程序。我发现使用 Bing API 是可能的。我注册了，拿到了key，但是找不到，怎么用

我正在使用以下代码：

    private async void Button_Click(object sender, RoutedEventArgs e)
    {
        RouteQuery query = new RouteQuery();

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

        wayPoints.Add(new GeoCoordinate(47.23449, -121.172447));
        wayPoints.Add(new GeoCoordinate(47.062638, -120.691795));

        query.Waypoints = wayPoints;
        query.QueryCompleted += geoQ_QueryCompleted;
        query.QueryAsync();
    }

    private void geoQ_QueryCompleted(object sender, QueryCompletedEventArgs<Route> e)
    {
        try
        {
            Route myRoute = e.Result;
            MessageBox.Show("Completed");
        }
        catch (TargetInvocationException)
        {
            /// Unauthorized access exception 0x8004231C
            Thread.Sleep(1000); // waiting for  completing the query
            geoQ_QueryCompleted(sender, e);
        }

    }

但我收到未经授权的访问异常 0x8004231C。想请教一下，我该如何解决？

Answer 1

您不需要密钥即可显示离线地图。如果您在设备上下载了地图，则离线路线应该可以使用。您可以查看 sample 以获取更多详细信息。

以下引用自 msdn 示例，

However, mapping services also work without Internet connectivity when maps are downloaded for offline use.

Windows Phone 离线路由

Windows Phone Offline routing

c#

windows-phone-8

windows-phone-8.1

bing-maps

bing-api