The Add Graphics with Symbols sample demonstrates how to add points, polylines, and polygons as graphics, set a symbol renderer to the graphics and add to a GraphicsOverlay. The sample also adds TextSymbol to represent text as symbols on the GraphicsOverlay
Graphics are added to a GraphicsOverlay without any symbols or styles. To include a symbol with a graphic, create a Graphic with a Symbol and Geometry and add it to the GraphicsOverlay.
//define a polyline for the boat trip Polyline boatRoute = getBoatTripGeometry(); //define a line symbol SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.DASH, Color.rgb(128, 0, 128), 4); //create the graphic Graphic boatTripGraphic = new Graphic(boatRoute, lineSymbol); //add to the graphic overlay graphicOverlay.getGraphics().add(boatTripGraphic);