carregar um expandableList com um Bd sqlite3 externo

protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main_layout);
		
		Group group1 = new Group("Ativos");
		group1.getItems().add(new Item("Caio"));
		group1.getItems().add(new Item("Jaci"));
		group1.getItems().add(new Item("Bruno"));

		Group group2 = new Group("Inativos");
		group2.getItems().add(new Item("Marcio"));
		group2.getItems().add(new Item("André"));
		
		List<Group> groups = new ArrayList<Group>();
		groups.add(group1);
		groups.add(group2);
		
		AdapterList adapter = new AdapterList(MainActivity.this, groups);
		
		ExpandableListView lstGroups = (ExpandableListView)findViewById(R.id.lstGroups);
		lstGroups.setAdapter(adapter);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}