I was able to solve this with the code below. This seems to work great.
var labelList = new Array();
featureLayer.on("update-end", function (evt) {
for (var i = 0; i < evt.target.graphics.length; i++) {
var gfx = evt.target.graphics[i];
//if label hasn't been added go ahead and generate it and add to array
if (labelList.indexOf(gfx.attributes[idField]) == -1) {
labelList.push(gfx.attributes[idField]);
addLabelToGeometry(gfx.attributes[labelField], gfx.geometry);
}
}
});
function addLabelToGeometry(text, geometry) {
var point = geometry.getExtent().getCenter();
//top level label of text
var TextSymbolJson = {
"type": "esriTS",
"color": [0, 0, 0, 255],
"verticalAlignment": "middle",
"horizontalAlignment": "center",
"font": {
"family": "Helvetica",
"size": 12,
"style": "normal",
"weight": "bold",
"decoration": "none"
}
};
var labelTextSymbol = new esri.symbol.TextSymbol(TextSymbolJson);
labelTextSymbol.setText(text);
var labelGraphic = new esri.Graphic(point, labelTextSymbol);
map.graphics.add(labelGraphic);
}