Zoom based Graphics Renderer using GraphicsOverlay

Dhruvin

How can I create a zoom based Graphics Renderer using the GraphicsOverlay with the Android Runtime SDK ?

I am on version 100.13.0

I want to be able to see some simple point marker when zoomed out and when I zoom close enough (passing a certain zoom threshold) to the graphic I want to display the actual graphic. 

Is there is a more automatic way to do this with a Renderer than switching out the graphic myself ?

If not possible on Android Runtime, is it possible with the Javascript api ?

Please let me know. Thanks

PriyankaRupani

Hi Dhruvin,

The function names should be the same in android as well. 

Also, only multilayer symbols are supported as scale-based and alternate symbols.

you can convert PictureMarkerSymbol to a MultilayerSymbol using below fucnction.

toMultilayerSymbol()

 Sample code

//Create a picture marker symbol from URI.
val pmSymbol = PictureMarkerSymbol("http://xyz/pushpin/BrownPushpin.png")
pmSymbol.height = 50f
pmSymbol.width = 50f

// Create an ArcGISMap with Light Gray Canvas basemap and set it to MapView
mapView.map = ArcGISMap(Basemap.createLightGrayCanvas())

// Create Multilayer point symbol from Picture marker symbol
val MultilayerPointSymbol = pmSymbol.toMultilayerSymbol()

// Create a graphics overlay to be identified against
val graphicsOverlay = GraphicsOverlay()
val graphic = Graphic(Point(50.0, 50.0, mapView.spatialReference),MultilayerPointSymbol)
graphicsOverlay.graphics.add(graphic)
mapView.graphicsOverlays.add(graphicsOverlay)

//Set reference properties on symbol to allow it to support alternate symbols
MultilayerPointSymbol.referenceProperties = SymbolReferenceProperties(0.0, 40_000_000.0)

 Hope this helps.