private void initDatas() {
    groupItems = new ArrayList<BabyJiShiBenListViewExpandableGroupItem>();
    groupItem = new BabyJiShiBenListViewExpandableGroupItem();
    groupItem.setTitle("今天");
    luyinItems = dbService.getTodayItems(DateFormater.getInstatnce().getYMD());
    luyinItem = new BabyLuYin();
    luyinItem.setImageId(R.drawable.add_icon);
    luyinItems.add(0, luyinItem);
    if (luyinItems.size() == 1) {
      groupItem.setNum(0);
    } else {
      groupItem.setNum(luyinItems.size() - 1);
    }
    groupItem.setImage(R.drawable.group_unexpand_icon);
    groupItem.setLuyinItems(luyinItems);
    groupItems.add(groupItem);

    groupTitles = dbService.getMonths(DateFormater.getInstatnce().getYM());
    if (groupTitles.size() > 0) {
      for (String groupTitle : groupTitles) {
        groupItem = new BabyJiShiBenListViewExpandableGroupItem();
        groupItem.setTitle(groupTitle);
        groupItem.setLuyinItems(
            dbService.findItemsByYM(groupTitle, DateFormater.getInstatnce().getYMD()));
        if (groupItem.getLuyinItems().size() > 0) {
          groupItem.setNum(groupItem.getLuyinItems().size());
          groupItems.add(groupItem);
        }
        groupItem = null;
      }
    }
  }
 @Override
 public void onDestroy() {
   super.onDestroy();
   dbService.closeDB();
 }