topic Re: Zoom based Graphics Renderer using GraphicsOverlay in ArcGIS Runtime SDK for Android Questions

Zoom based Graphics Renderer using GraphicsOverlay

Dhruvin — Thu, 14 Apr 2022 00:48:59 GMT

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

Re: Zoom based Graphics Renderer using GraphicsOverlay

RamaChintapalli — Mon, 18 Apr 2022 23:37:30 GMT

Hi,
Yes, it is possible to create scale based symbols in Runtime. Here is a blog that explains how to create them. A sample to showcase is still in works.

Release Notes:
https://developers.arcgis.com/android/reference/release-notes/100.13/#alternate-symbols-and-scale-based-symbols-for-unique-value-and-class-breaks-renderers

Blog post:
https://www.esri.com/arcgis-blog/products/api-net-win-desktop/developers/defining-scale-based-symbology-using-arcgis-runtime-sdk/

Thanks
Rama

Re: Zoom based Graphics Renderer using GraphicsOverlay

Dhruvin — Wed, 20 Apr 2022 15:48:50 GMT

Thanks Rama for this info.

When do you think the sample will be available ?

I see that the blog post is for Runtime .net api, are the api functions very similarly named in Android runtime ?

Re: Zoom based Graphics Renderer using GraphicsOverlay

Dhruvin — Mon, 25 Apr 2022 17:37:58 GMT

We are using PictureMarkerSymbol for our Graphics. Our process is: VectorDrawables -> Bitmap -> PictureMarkerSymbol.

How can we use MultilayerSymbol instead of PictureMarkerSymbol?

The API documentation mentions this is only compatible with MultilayerSymbol

Thanks

Re: Zoom based Graphics Renderer using GraphicsOverlay

PriyankaRupani — Tue, 26 Apr 2022 18:48:31 GMT

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://xxx/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.