Windows Phone 8.1 MapControl empty

Question

I'm beginning to develop windows phone application. I would like add MapControl in my app, i followed Microsoft tutorial http://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn741528.aspx I have developer account, I got the Map service ApplicationID and Map service AuthenticationToken, add them in my project.

XAML

<Maps:MapControl 
x:Name="map"        
Grid.Row="1"
MapServiceToken="<token>"/>

with

xmlns:Maps="using:Windows.UI.Xaml.Controls.Maps"

I load my project on emulator and device, but I can't display map. I have a black screen. There isn't token error.

Did I miss a step ?

Thanks

Answer 1

您桅杆启用（检查）Package.appxmanifest的“功能”选项卡中的“位置”