We have developed a sample application in Android (SDK version around 3.2 and ArcGIS runtime SDK 10.2 or lesser and IDE is Eclipse). With this application we are able to load map service below and show layers on map.
http://18.104.22.168/lams/rest/services/LAMS_Incident_themes/MapServer (ArcGIS server version 10.1)
Sample Android application code can be downloaded from link below.
Android SDK which we have used can be downloaded using link below.
After migrating map services to ArcGIS server 10.3.1 and put it behind proxy server with new URL mentioned below, map is not getting displayed in Android app. http://22.214.171.124/4gLAMS/Services/GaaS/gaas4glamsincthemes/ (ArcGIS Server version 10.3.1)
Can you please let us know what could be the issue with android SDK?