FeatureLayer not displayed and infoWindow not popup

ShaningYu

By referring ESRI's sample, I added a FeatureLayer layer.  But the FeatureLayer does not display and the infoWindow does not popup.  The related code is below:

          var content = "<b>Service Line</b>: ${SERVICE_LINE} <br/>" +
                              "<b>Segment</b>: ${TRACK_SEGMENT}" +
         "<b>Length (ft)</b>: ${Shape_Length}";
          var infoTemplate = new esri.InfoTemplate("${TRACKNAME}", content);
          map.infoWindow.resize(200, 80);
          var featureLayer = new esri.layers.FeatureLayer(serverURL + "/0", {
              mode: esri.layers.FeatureLayer.MODE_ONDEMAND,
              outFields: ["OBJECTID", "TRACKNAME", "Shape_Length", "TRACK_SEGMENT", "SERVICE_LINE"],
              infoTemplate: infoTemplate     });
          map.addLayers([basemap, featureLayer]);
I doubled checked and am sure the URL is correct.  I also load the required dojo items.  Did I miss something?  Thanks if you help.

JamieSimko

One common mistake I know of is pointing to the MapServer url instead of the FeatureServer url. Even with double checking I've unknowingly done that before.

e.g.
[INDENT]"http://arcgis/arcgis/rest/services/path/name/MapServer/4" [/INDENT]
instead of
[INDENT]"http://arcgis/arcgis/rest/services/path/name/FeatureServer/4"[/INDENT]

Could that be it?

What response do you get back from the network request to the feature layer url? Depending on what this is it could help narrow down the causes of the error.