public class TestActivity extends Activity implements Cloneable{
 private CheckedItems checkedItems = new CheckedItems();
 private SparseBooleanArray sba = new SparseBooleanArray();
 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        sba.append(0, true);
        sba.append(3, false);
        sba.append(5, true);
        
        checkedItems.setChecked(0, sba);
        sba.clear();
      
        sba.append(4, true);
        sba.append(2, false);
        sba.append(3, false);
        sba.append(7, true);
        sba.append(5, false);
        
        checkedItems.setChecked(1, sba);
        sba.clear();
        
        Log.d("MyTag", checkedItems.getChecked(0).size()+"");
        Log.d("MyTag", checkedItems.getChecked(1).size()+"");
      
 }

 class CheckedItems {
  private CopyItem ci;
  private Map<Integer, SparseBooleanArray> copy;
     
  CheckedItems(){
   ci = new CopyItem();
   copy = new HashMap<Integer, SparseBooleanArray>();  
  }
  public void setChecked(int key, SparseBooleanArray sba){
   ci.put(key, sba);
   copy.putAll((Map<? extends Integer, ? extends SparseBooleanArray>) ci.clone());
  }
  
  public Map<Integer, Boolean> getChecked(int key){
   Map<Integer, Boolean> checkedItemsBoolean = new HashMap<Integer, Boolean>();
   for(int i = 0 ; i < copy.get(key).size() ; i++){
    checkedItemsBoolean.put(copy.get(key).keyAt(i),
      copy.get(key).get(copy.get(key).keyAt(i)));
   }
   return checkedItemsBoolean;
  }
 }
 
 class CopyItem extends HashMap<Integer, SparseBooleanArray> implements Cloneable{
  private static final long serialVersionUID = 1L;

  public CopyItem() {
   super();
   // TODO Auto-generated constructor stub
  }

  public Object clone(){                       
   Object o = null;                   
   try{                      
    o = super.clone();               
   }catch (Exception e){System.out.println("can't clone object");}
   return o;  
  }
 }
}

이렇게 해봤는데 잘 안되네요.