public class ManagedDialogsActivity extends Activity
   implements IDialogFinishedCallBack
{
   //A registry for managed dialogs
   private DialogRegistry dr = new DialogRegistry();

   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      this.registerDialogs();
   }

   protected void registerDialogs()
   {
      // does nothing
      // have the derived classes override this method
      // to register their dialogs
      // example:
      // registerDialog(this.DIALOG_ALERT_ID_3, gmad);
   }

   public void registerDialog(IDialogProtocol dialog)
   {
      this.dr.registerDialog(dialog);
   }

   @Override
   protected Dialog onCreateDialog(int id) {
      return this.dr.create(id);
   }

   @Override
   protected void onPrepareDialog(int id, Dialog dialog) {
      this.dr.prepare(dialog, id);
   }

   public void dialogFinished(ManagedActivityDialog dialog, int buttonId)
   {
      //nothing to do
      //have derived classes override this
   }
}