Windows Phone 8, 添加Map控件

摘要：

1. 添加Map控件到程序。

2. 在Map控件中显示您当前的位置。

内容：

首先在WMAppManifest.xml中的Capabilities选项卡中勾选如下两项：ID_CAP_MAP, ID_CAP_LOCATION

在XAML中添加Map控件：

<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<Controls:Map x:Name="mapWithMyLocation" />
</Grid>

在后台代码中， 添加Convert 类使能从Windows.Devices.Geolocation; 转换到 System.Device.Location;

public static class CoordinateConverter
{
public static GeoCoordinate ConvertGeocoordinate(Geocoordinate geocoordinate)
{
return new GeoCoordinate
(
geocoordinate.Latitude,
geocoordinate.Longitude,
geocoordinate.Altitude ?? Double.NaN,
geocoordinate.Accuracy,
geocoordinate.AltitudeAccuracy ?? Double.NaN,
geocoordinate.Speed ?? Double.NaN,
geocoordinate.Heading ?? Double.NaN
);
}
}

添加如下命名空间：

using System.Device.Location;
using Windows.Devices.Geolocation;
using System.Windows.Shapes;
using System.Windows.Media;
using Microsoft.Phone.Maps.Controls;

代码实例：

public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
InitializeComponent();

// Sample code to localize the ApplicationBar
//BuildLocalizedApplicationBar();
}

protected override void OnNavigatedTo(NavigationEventArgs e)
{
ShowMyLocationOntheMap();
base.OnNavigatedTo(e);
}

private async void ShowMyLocationOntheMap()
{
Geolocator myGeolocator = new Geolocator();
Geoposition myGeoposition = await myGeolocator.GetGeopositionAsync();
Geocoordinate myGeocoordinate = myGeoposition.Coordinate;
GeoCoordinate myGeoCoordinate1 =
CoordinateConverter.ConvertGeocoordinate(myGeocoordinate);
mapWithMyLocation.Center = myGeoCoordinate1;
mapWithMyLocation.ZoomLevel = 17;

// Create a small circle to mark the current location.
Ellipse myCircle = new Ellipse();
myCircle.Fill = new SolidColorBrush(Colors.Blue);
myCircle.Height = 20;
myCircle.Width = 20;
myCircle.Opacity = 50;
// Create a MapOverlay to contain the circle.
MapOverlay myLocationOverlay = new MapOverlay();
myLocationOverlay.Content = myCircle;
myLocationOverlay.PositionOrigin = new Point(0.5, 0.5);
myLocationOverlay.GeoCoordinate = myGeoCoordinate1;
// Create a MapLayer to contain the MapOverlay.
MapLayer myLocationLayer = new MapLayer();
myLocationLayer.Add(myLocationOverlay);
// Add the MapLayer to the Map.
mapWithMyLocation.Layers.Add(myLocationLayer);

}

}

参考： http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj735578(v=vs.105).aspx