ArcGIS runtime SDK 3.0 for Windows Phone: how to solve the problem that no map is displayed when Jetta is called

Recently, ArcGIS runtime SDK 3.0 for Windows Phone has been released. After obtaining it, the author immediately tasted it easy.CodeLoad the basemap of Jetta as follows:

<ESRI: Map x: Name = "map"> <ESRI: arcgistiledmapservicelayer url = "http://www.arcgisonline.cn/ArcGIS/rest/services/ChinaOnlineCommunity/MapServer"/> </ESRI: Map>

And then press F5 to run it ~

Why is there a problem with the basemap? The same URL can be seen in the browser .. You can also see in the Silverlight API ..

This should be a problem specific to the Windows Phone SDK .. Think about it, not found, that is, the slice of the current requested MAP range cannot be found ~ Is there no slice in the current range? Predicted to change the MAP range ~ Added a line of code, as shown below:

Map. extent = new ESRI. ArcGIS. Client. Geometry. Envelope (11575115,3575676, 11596612,3599415 );

Press F5, and the effect is as follows:

It seems that there is no slice in the initial map range. Just modify the range!