Previously I used following code for adding Layers:
UserCredentials userCredentials = new UserCredentials();
userCredentials.setUserAccount("Username", "Password");
dynamicLayer = new ArcGISDynamicMapServiceLayer(url,null, userCredentials, true);
mMapView.addLayer(dynamicLayer);
What's the alternative of adding ArcGISDynamicMapServiceLayer in API 100 as this Layer class doesn't exist in new API?