Get ArcGIS online basemaps from default account

FetchBasemaps.java

  	private void fetchBasemaps() throws Exception {

			String url = "http://www.arcgis.com";
			Portal portal = new Portal(url, null);

			// get the information provided by portal
			PortalInfo portalInfo = portal.fetchPortalInfo();
			// get query to determine which basemap gallery group should be used
			// in client
			String basemapGalleryGroupQuery = portalInfo
					.getBasemapGalleryGroupQuery();
			// create a PortalQueryParams from the basemap query
			PortalQueryParams portalQueryParams = new PortalQueryParams(
					basemapGalleryGroupQuery);
			// allow public search for basemaps
			portalQueryParams.setCanSearchPublic(true);
			// find groups for basemaps
			PortalQueryResultSet<PortalGroup> results = portal
					.findGroups(portalQueryParams);

			// get the basemap group
			List<PortalGroup> groupResults = results.getResults();

			if (groupResults != null && groupResults.size() > 0) {
				PortalQueryParams queryParams = new PortalQueryParams();
				queryParams.setCanSearchPublic(true);
				queryParams.setLimit(15);

				String groupID = groupResults.get(0).getGroupId();
				queryParams.setQuery(PortalItemType.WEBMAP, groupID, null);
				queryParams.setSortField("name").setSortOrder(
						PortalQuerySortOrder.ASCENDING);
				
				PortalQueryResultSet<PortalItem> queryResultSet = portal
						.findItems(queryParams);
				
				for(PortalItem item : queryResultSet.getResults()){
					byte[] data = item.fetchThumbnail();
					if (data != null) {
						Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0,
								data.length);
						MyItem portalItemData =  new MyItem(item, bitmap);
						itemDataList.add(portalItemData);
						
					}
				}
				

			} else {
				Log.d("Test", "portal group empty");
			}

		}