如何在地图控件中显示多个位置（Windows Phone 8.1）

Question

我正在尝试使用地图控件在Windows Phone 8.1中开发应用程序。 Google place api用于获取Json格式的附近位置。现在如何在Windows Phone应用程序中将它们显示到我的地图控件。

当我提取Json格式时，我得到了以下类。

 public class Location
    {
        public double lat { get; set; }
        public double lng { get; set; }
    }

    public class Northeast
    {
        public double lat { get; set; }
        public double lng { get; set; }
    }

    public class Southwest
    {
        public double lat { get; set; }
        public double lng { get; set; }
    }

    public class Viewport
    {
        public Northeast northeast { get; set; }
        public Southwest southwest { get; set; }
    }

    public class Geometry
    {
        public Location location { get; set; }
        public Viewport viewport { get; set; }
    }

    public class OpeningHours
    {
        public bool open_now { get; set; }
        public List<object> weekday_text { get; set; }
    }

    public class Photo
    {
        public int height { get; set; }
        public List<string> html_attributions { get; set; }
        public string photo_reference { get; set; }
        public int width { get; set; }
    }

    public class Result
    {
        public Geometry geometry { get; set; }
        public string icon { get; set; }
        public string id { get; set; }
        public string name { get; set; }
        public string place_id { get; set; }
        public string reference { get; set; }
        public string scope { get; set; }
        public List<string> types { get; set; }
        public string vicinity { get; set; }
        public OpeningHours opening_hours { get; set; }
        public List<Photo> photos { get; set; }
        public double? rating { get; set; }
    }

    public class RootObject
    {
        public List<object> html_attributions { get; set; }
        public string next_page_token { get; set; }
        public List<Result> results { get; set; }
        public string status { get; set; }
    }

所以我想用图钉显示地图控件中的每个位置。

在Geometry中，我们有latitute和logitude值。如何将它们放在我的地图控件中

Answer 1

你必须做这样的事情首先制作两个列表并将位置传递给它

        public List<string> longt = new List<string>();
        public List<string> lati = new List<string>();

然后循环在地图上显示许多图标

for (i = 0; i <=t.Longitudelist.Count-1 ; i++)
            {

                MapIcon mapIcon1 = new MapIcon();
                string latitudetxt;
                string longitudetxt;
                latitudetxt = t.Latitudelist[i].Text;
                longt.Add(latitudetxt);
                longitudetxt = t.Longitudelist[i].Text;
                lati.Add(longitudetxt);
                // mapIcon1.Image = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/StoreLogo.png"));
                mapIcon1.Location = new Geopoint(new BasicGeoposition()
                {

                   Latitude = Convert.ToDouble(longt[i]),
                   Longitude = Convert.ToDouble(lati[i])
                });
               // mapIcon1.Image = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/StoreLogo.png"));
                mapIcon1.NormalizedAnchorPoint = new Point(0.5, 0.5);
                Map.MapElements.Add(mapIcon1);

                var bt = new Button();
                buttonn.Add(bt);
                bt.Content = "";
                bt.Width = 30;
                bt.Height = 50;
                bt.Opacity = 10;
                bt.Content = i;
                 // button.
                this.Map.Children.Add(bt);
                // assign geoposition
                var position = new Geopoint(new BasicGeoposition()
                {
                    Latitude = Convert.ToDouble(longt[i]),
                    Longitude = Convert.ToDouble(lati[i])

                });
                MapControl.SetLocation(buttonn[i], position);
                var pointt=MapControl.GetLocation(bt);
                pointt.Position.Latitude.ToString();
                pointt.Position.Longitude.ToString();
                //longg= position.Position.Latitude;
                //latt = position.Position.Longitude;
              //  button.Tag = longg;

                MapControl.SetNormalizedAnchorPoint(bt, new Point(0.5, 0.5));
                MapControl.SetIsTemplateFocusTarget(bt, true);

                bt.Click += Button_Click;

                await Map.TrySetViewAsync(mapIcon1.Location, 18D, 0, 0, MapAnimationKind.Bow);

            }

Answer 2

我认为你应该从观看本教程开始 https://channel9.msdn.com/Series/Building-Apps-for-Windows-Phone-8-1/12