topic MapView Initial Extent in ArcGIS Runtime SDK for Android Questions

MapView Initial Extent

LukeCatania — Tue, 31 Jul 2012 20:39:02 GMT

I have tried to set the initial extent of the mapview to the world, but it seems to be overridden by the extent of the first layer loaded into the mapview. How to I get around this? All my layers are WGS_1984 Geographic. I have set a the initial extent in the xml as well as added onStatusChanged listener on each layer:

public void onStatusChanged(Object arg0, STATUS status) {
                /*
                 * Check if layer's new status = INITIALIZED. If it is,
                 * initialize UI elements
                 */
                if (status.equals(OnStatusChangedListener.STATUS.INITIALIZED)) {
                    System.out.println("onStatusChanged: "
                        + arcGISLocalTiledLayer.getUrl());
                    mapView.setExtent(new Envelope(-180, -90, 180, 90));
                }
            }

Re: MapView Initial Extent

AndyGup — Sat, 11 Dec 2021 21:07:15 GMT

Luke,

Make sure you are listening for when the first layer has been initialized using the MapView's OnStatusChanged event, for example:

mapView = new MapView(this);
mapView.setOnStatusChangedListener(new OnStatusChangedListener() {
  private static final long serialVersionUID = 1L;
  
 @Override
 public void onStatusChanged(Object source, STATUS status) {
   if (OnStatusChangedListener.STATUS.INITIALIZED == status && source == _mapView) {
   //TODO Set your extent here
   }
   if (OnStatusChangedListener.STATUS.LAYER_LOADING_FAILED == status && source == _mapView){
   //TODO
   }
 }
});

-Andy

Re: MapView Initial Extent

ChristopherDonohue — Fri, 25 Jan 2013 19:45:46 GMT

I'm experiencing the same issue even when I set the extent after the map is done initializing.

Re: MapView Initial Extent

NigelDsouza — Wed, 13 Feb 2013 08:08:01 GMT

why don't you try
MapView.getMapBackgroundExtent();

It will set this to the Extent of the Map.

My question is do you want to set it to the full extent or a specific Extent like say when the Map gets initialized it should be set around a particular country or something.

Re: MapView Initial Extent

GSauers — Thu, 21 Feb 2013 12:03:12 GMT

Has anyone found a solution for this?

I want to use 2 or more cached maps but the extent only allows me to view one of them.