How to use the DictionaryRenderer

Use the DictionaryRenderer to change label visibility

The following code sample takes a MessageGroupLayer and loops through all of the graphics layers to toggle the visibility of the labels. The ChildLayers method is used to return the graphics layers in the MessageGroupLayer:

for (Layer lyr : msgGroupLayer.getLayers())
{
 //get the graphics layer
	GraphicsLayer grLyr = (GraphicsLayer) lyr;
			
	//get the dictionary renderer 
	dictionaryRenderer = (DictionaryRenderer) grLyr.getRenderer();
			
	//toggle visibility
	if (dictionaryRenderer.getLabelsVisible() == true){
		dictionaryRenderer.setLabelsVisible(false);
 }
	else{
  dictionaryRenderer.setLabelsVisible(true);
	}
			
 //apply dictionary renderer back to graphics layer
	grLyr.setRenderer(dictionaryRenderer);
}