Problem refreshing FeatureLayer on android device after changes made in REST server

Question

Hi,

I have problem with refreshing FeatureLayers on my android application (uses 2 base maps as TiledMap and 3 FeatureLayers) I can load the FeatureLayers without problem, but if there are changes made on the server (ie. adding or removing features from layers). Zooming, moving or other wont help either

Only way to update the featurelayers is to remove all the featurelayers from the MapView and add them again from the server. This is way too slow for my application.

Code that i would like to get working: for (ArcGISFeatureLayer l : targetlayers) {
   l.refresh();
  }

I have tried to work with MODE.ONDEMAND and MODE.SNAPSHOT, neither of them seem to bring solution.

AleksiMajander · Answer

Found a workaround by setting .setAutoRefreshOnExpiration(true); and .setExpirationInterval(3);

Seems the problem is with caching the features when they are loaded from server.

AndyGup · Answer

Aleksi, another suggestion for HTTP responses. A real quick way to verify if the request is being made is if you have access to your web server logs then run the refresh() and see if the HTTP request shows up in the log.

-Andy

AndyGup · Answer

Aleksi, are you able to verify if there is a request/response when the refresh() method runs? And, did any errors show up in Logcat when the refresh() runs?

If you don't know how to monitor HTTP requests for native Android apps, here's a blog post that should help: http://www.andygup.net/?p=695

-Andy