problem using arcgisonline basemaps

[MichaelZierten]

I'm trying to use the arcgis online basemaps (http://server.asrcgisonline.com/ArcGIS/rest/services/) as basemaps in my application. My feature data is all in Web Mercator Auxiliary Sphere (DynamicMapServiceLayer). The feature classes will show and project properly, but the base layers don't appear. If I remove the feature classes, the base layers show up in GCS, without any projection (the map is squashed down).  I've defined the spatial reference (wkid=102100), but it still won't work.
               
                <esri:Extent id="NVExtent"   
      xmin="-13856000"
      ymin="4243000"
      xmax="-12291000"
      ymax="5182000" >
    <esri:SpatialReference wkid="102100" />
  </esri:Extent>

Note: I've used all my layers in ArcGIS Viewer for Flex, with the ESRI base layers, and everything works fine. ???

[RobertScheitlin__GISP]

Michael,

   Yes it is but you were using this map service not the one that I have in red.

and the one below that you were using is WGS 4326:

http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer

And this one (the correct one) to use is Spatial Reference: 102100 (3857):

http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer

[RobertScheitlin__GISP]

Michael,

Glad you got it working.

Don't forget  the most important part, click the Mark as answer check (this is the first (left most) portion of the image):