Label Feature Layer created by Feature Collection

[ZdeněkSoldán]

Acording to this demonstration ArcGIS API for JavaScript Sandbox I try to set labels to Feature Layer. My Feature Layer is created by Feature Collection and when I have exactly the same code as in demonstration no labels are shown.

Can anyone help please?

Here is my code:

var map = this.map;
map.showLabels = true;
var devFeatureCollection = {
     "layerDefinition": null,
     "featureSet":{
          "features":[],
          "geometryType": "esriGeometryPoint"
     }
};
devFeatureCollection.layerDefinition = {
     "geometryType": "esriGeometryPoint",
     "objectIdField": "ObjectID",
     "spatialReference": {
           "wkid": 102067,
           "latestWkid": 102067
     },
     "drawingInfo": {
           "renderer": {
              "type": "simple",
              "symbol": {
                "type": "esriPMS",
                "url": "images/trafLight.png",
                "contentType": "image/png",
                "width": 10,
                "height": 20
              }
           }
     },
     "fields": [{
           "name": "ObjectID",
           "alias": "ObjectID",
           "type": "esriFieldTypeOID"
           }, {
           "name": "serialno",
           "alias": "ID zařízení",
           "type": "esriFieldTypeString"
           }, {
           "name": "street1",
           "alias": "Ulice_1",
           "type": "esriFieldTypeString"
           }, {
           "name": "street2",
           "alias": "Ulice_2",
           "type": "esriFieldTypeString"
          }]
};
devFeatureLayer = new FeatureLayer(devFeatureCollection, {
      id: 'devStates',
      infoTemplate: devPopupTemplate,
      outFields: ["*"]
});
// create a text symbol to define the style of labels
        var devLabel = new TextSymbol()
        devLabel.font.setSize("14pt");
        devLabel.font.setFamily("arial");

        //this is the very least of what should be set within the JSON  
        var json = {
          "labelExpressionInfo": {"value": "{serialno}"}
        };

        //create instance of LabelClass (note: multiple LabelClasses can be passed in as an array)
        var labelClass = new LabelClass(json);
        labelClass.symbol = devLabel; // symbol also can be set in LabelClass' json
        devFeatureLayer.setLabelingInfo(labelClass);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

[RobertScheitlin__GISP]

Zdeněk,

   FYI, I thought I would pass along the reason that my code changed worked and your was not working, now that I have figured it out. The issue is the use of the x and y field values as STRINGS in the new Point. You need to pass your X and Y as a number and not a string for it to work. 

//This is attempting to pass the X and Y as strings
/var geometry = new Point({"x":"-605982.51","y":"-1162677.18","spatialReference":{"wkid":102067}});

//This is passing them as numbers
var geometry = new Point(-605982.51,-1162677.18, new SpatialReference({"wkid":102067}));

//This would work as well
var geometry = new Point({"x":-605982.51,"y":-1162677.18,"spatialReference":{"wkid":102067}});‍‍‍‍‍‍‍‍