The relevant code from the java file:
MapView map = null;
String baseMapURL = "http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer";
String dynamicMapURL = "http://gis.hicentral.com/arcgis/rest/services/OperPublicSafety/MapServer";
@Override
public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.floodzones);
  map = (MapView) findViewById(R.id.map);
  initextent = new Envelope(-17622457.3032347, 2439157.37937499, -17546524.1970318, 2457953.93517276);
  map.setExtent(initextent, 0);
  ArcGISTiledMapServiceLayer baseMap = new ArcGISTiledMapServiceLayer(baseMapURL);
  this.map.addLayer(baseMap);
  ArcGISDynamicMapServiceLayer dynamicLayer = new ArcGISDynamicMapServiceLayer(dynamicMapURL);
  this.map.addLayer(dynamicLayer);
  dynamicLayer.refresh();
}
And from the layout xml:
<com.esri.android.map.MapView
  android:id="@+id/map" 
  android:layout_height="fill_parent"
  android:layout_width="fill_parent" 
  initExtent="-17622457.3032347 2439157.37937499 -17546524.1970318 2457953.93517276">   
</com.esri.android.map.MapView>