Sarah, I haven't used the TOC, so I am not sure how it manages the layers, but in my widget that uses radio buttons, I just put the layers in an array, and then in the radio click handler I turn all layers off that don't correspond to the click event.Putting all the operational layers that exist in the main config.xml file into an array: private function getLayers():void
{
if (configData && configData.opLayers){
for (var i:int=0; i< configData.opLayers.length; i++)
{
layerArray.addItem(configData.opLayers.label);
}
} excluding any layers listed as exclude in the widget's config fileprivate function excludeLayers(): void
{
if (configXML){
// exclude these layers
var layers:XMLList = configXML..excludelayer as XMLList;
for (var j:Number = 0; j < layers.length(); j++){
for(var i:int=0; i< layerArray.length; i++){
if(layerArray == layers){
layerArray.removeItemAt(i);
}
}
}
}
} create radio buttons:for(var i:uint = 0; i < layerArray.length; i++)
{
radioBtn = new RadioButton;
radioBtn.groupName = "radioBtnGroup";
radioBtn.label = layerArray;
radioBtn.styleName = "WidgetText";
radioBtn.value = i;
radioBtn.height = 18
radioBtn.setStyle("textRollOverColor","#D0D0D0 ")
vBoxRadio.addChild(radioBtn);
}radio click handler: private function radioClickHandler(event:ItemClickEvent):void
{
// update the visible layers to only show the layer selected
for(var i:uint = 0; i < layerArray.length; i++)
{
if (layerArray == event.label){
map.getLayer(layerArray).visible = true;
}else{
map.getLayer(layerArray).visible = false;
}
}
}
