的Windows Phone 8 - 在地图上显示方法文档当前位置 [英] Windows Phone 8 - HowTo display current position on the map

问题描述

正如标题建议我正在与地图上的用户的当前位置的显示struggeling。

据我所知有两种方式显示当前用户位置：

1. 在代码：创建一个椭圆，将其设置为一个 MapOverlay ，设置MapOverlay的会有地理座标，这个添加叠加层到 MapLayer <内容/ code>这添加到地图 - 但我不能访问 MapOverlay 了，因此我无法改变（更新）用户的位置。
有没有一种方法来更新用户的位置，而无需重新绘制所有图层？




2. XAML和代码：在Windows Phone 7的，我能够加入图钉地图和让 GeoCoordinateWatcher 处理 PositionChanged 事件，并设置 MyLocation.Location 到当前位置。

看来，有没有办法一个图钉添加到地图中，如果你不使用的Windows Phone工具包。于是，我尝试添加图钉从Windows Phone的工具包：

<预类=郎XML prettyprint-覆盖> 的xmlns：地图=CLR的命名空间：Microsoft.Phone.Maps.Controls;装配= Microsoft.Phone.Maps
的xmlns：maptk =clr-命名空间：Microsoft.Phone.Maps.Toolkit;装配= Microsoft.Phone.Controls.Toolkit

< maptk：图钉X：NAME =MyLocation>

< maptk：Pushpin.Template>
<&控件模板GT;
<椭圆
WIDTH =15
高度=15
保证金=0
填充=钢青
StrokeThickness = 1
行程=黑/>
< /控件模板>
< / maptk：Pushpin.Template>

< / maptk：图钉>


但我不能在我的MapPage.xaml访问MyLocation图钉（调试器说，这是空）。

我可以显示与 maptk：图钉

在Windows Phone 7的，我可以简单地创建了图钉一个XAML布局，将保存用户位置像这样的：

<预类=郎咸平的XML prettyprint-覆盖> 的xmlns：地图=CLR的命名空间：Microsoft.Phone.Controls.Maps ;装配= Microsoft.Phone.Controls.Maps

<地图：地图Grid.Row =2×：NAME =地图>

<地图：图钉X：NAME =MyLocation>
<地图：Pushpin.Template>
<&控件模板GT;
将;椭圆宽度=12
高度=12
保证金=0
填充=钢青
StrokeThickness =1
行程=黑
/>
< /控件模板>
< /图：Pushpin.Template>
< /图：图钉>

< /地图：地图>


然后我可以添加一个 GeoCoordinateWatcher 这将监听 PositionChanged 事件，改变MyLocation图钉的位置：

<预类=郎-CS prettyprint-覆盖> 无效GeoCoordinateWatcher_PositionChanged（对象发件人，GeoPositionChangedEventArgs<会有地理座标> E）
{
MyLocation.Location = e.Position。位置;
}


解决方案

尝试这种方式，

 图钉图钉=新图钉（）; 
 
 pushpin.Background =新的SolidColorBrush（Colors.Red）; 
 
 pushpin.Location =新会有地理座标（经纬度）; 
 
 pushpin.Content =SampleString; 
 
 pushpin.Width = 25; 
 
 map1.Children.Add（图钉）; //这是的方式添加图钉映射
  

参观了这一点。

的 http://social.msdn.microsoft.com/论坛/ wpapps / EN-US / 3d95b0c5-5f48-4918-b761-f8302fa090c2 / updatehow到节目 - 图钉上，microsoftphonemapscontrolsmap＃bbb42943-663b-41f1时-A920-f7368f2fee70

As the title suggest I am struggeling with the display of the current location of the user on the map.

Afaik there a two ways to display the current user location:

1. In Code: create a ellipse, set it as content of a MapOverlay, set the GeoCoordinate of the MapOverlay, add this overlay to a MapLayer and add this to the map - but I cannot access the MapOverlay anymore and thus I cannot change (update) the position of the user. Is there a way to update the user position without having to redraw all the map layers?

2. XAML and Code: In Windows Phone 7 I was able to add a Pushpin to the map and let the GeoCoordinateWatcher handle the PositionChanged event and set the MyLocation.Location to the current location.

It seems that there is no way to add a Pushpin to the map if you don't use the Windows Phone Toolkit. So I tried to add Pushpin from the Windows Phone Toolkit:

xmlns:maps="clr-namespace:Microsoft.Phone.Maps.Controls;assembly=Microsoft.Phone.Maps"
xmlns:maptk="clr-namespace:Microsoft.Phone.Maps.Toolkit;assembly=Microsoft.Phone.Controls.Toolkit"

<maptk:Pushpin x:Name="MyLocation">

    <maptk:Pushpin.Template>
        <ControlTemplate>
            <Ellipse
                Width="15" 
                Height="15" 
                Margin="0" 
                Fill="SteelBlue" 
                StrokeThickness="1"
                Stroke="Black"/>
        </ControlTemplate>
    </maptk:Pushpin.Template>

</maptk:Pushpin> 

But I cannot access the MyLocation pushpin in my MapPage.xaml (the debugger says it is null).

Can I display and update the current user position on the map with maptk:Pushpin?

In Windows Phone 7 I could simply create a XAML layout for the pushpin which would hold the user location like this:

xmlns:maps="clr-namespace:Microsoft.Phone.Controls.Maps;assembly=Microsoft.Phone.Controls.Maps"

<maps:Map Grid.Row="2" x:Name="Map" >

    <maps:Pushpin x:Name="MyLocation" >
        <maps:Pushpin.Template>
            <ControlTemplate>
                <Ellipse Width="12" 
                         Height="12" 
                         Margin="0" 
                         Fill="SteelBlue" 
                         StrokeThickness="1"
                         Stroke="Black"
                         />
            </ControlTemplate>
        </maps:Pushpin.Template>
    </maps:Pushpin>

</maps:Map>

then I could add a GeoCoordinateWatcher which would listen for the PositionChanged event and change the Location of the MyLocation pushpin:

void GeoCoordinateWatcher_PositionChanged ( object sender, GeoPositionChangedEventArgs<GeoCoordinate> e )
{
    MyLocation.Location = e.Position.Location;
}

解决方案

try this way,

Pushpin pushpin = new Pushpin();

pushpin.Background = new SolidColorBrush(Colors.Red);

pushpin.Location = new GeoCoordinate(Latitude, Longitude);

pushpin.Content = "SampleString";

pushpin.Width = 25;

map1.Children.Add(pushpin);//this is way add pushpin to map

Have visited this one .

http://social.msdn.microsoft.com/Forums/wpapps/en-US/3d95b0c5-5f48-4918-b761-f8302fa090c2/updatehow-to-show-pushpin-on-microsoftphonemapscontrolsmap#bbb42943-663b-41f1-a920-f7368f2fee70

这篇关于的Windows Phone 8 - 在地图上显示方法文档当前位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！