topic Re: Function to detect touch on pin graphics in ArcGIS Runtime SDK for Android Questions

Function to detect touch on pin graphics

ThomasBinu — Tue, 16 Oct 2012 15:53:31 GMT

Hi guys,

I am trying to create a an application similar to the UC2012 android application by ESRI. I show some relevant places in an ERSI map using some pin graphics. Now i want to create a callout when the use touches these 'pins' similar to UC2012 app. I am able to display a callout at random points specifed through code and I know how to use the 'onsingletaplistener' but I couldnt find any function that detects whether the touch was over the graphics. Can some one help me out?

Basically I am looking for a convenience function to detect whether the touch occurred over a graphic(with PictureMarkerSymbol).
Thanks in Advance

Tom

Re: Function to detect touch on pin graphics

deleted-user-ATjHIWsdQYmT — Wed, 17 Oct 2012 12:03:33 GMT

Check out the IdentifyTask. That'll get you what you need:
http://resources.arcgis.com/en/help/android-sdk/concepts/index.html#/Identify_task_sample/01190000001w000000/

You'll have to modify your SingleTapListener() event to execute the identify task against the layer you define in your map service (your pins). If you don't want to modify the SingleTapListener(), you could alternatively use OnLongPressListener().

Hope this helps.

Re: Function to detect touch on pin graphics

ThomasBinu — Thu, 18 Oct 2012 01:48:41 GMT

Check out the IdentifyTask. That'll get you what you need:
http://resources.arcgis.com/en/help/android-sdk/concepts/index.html#/Identify_task_sample/01190000001w000000/

You'll have to modify your SingleTapListener() event to execute the identify task against the layer you define in your map service (your pins). If you don't want to modify the SingleTapListener(), you could alternatively use OnLongPressListener().

Hope this helps.

Thank you for the reply.I ended up the using graphicsLayer.getGraphicIDs(x, y, tolerance, noOfPointsToBeDetected); to retrieve the graphics ids of the graphics(pins) near the point of touch in an int array inside singletaplistener().

Re: Function to detect touch on pin graphics

deleted-user-ATjHIWsdQYmT — Thu, 18 Oct 2012 12:29:56 GMT

Ah, I didn't realize (or missed) that you are using a Graphics Layer. When you said "graphics" I was thinking symbology. Knowing we're talking about a graphics layer; your implementation seems to be the most feasible.