private void initDao() {
   try {
     collectionDataDao = new CollectionDataDao();
     collectionDataDao.openDB(this);
   } catch (Exception e) {
     ADLog.error("初始Dao异常", e);
   }
 }
 private void initData(int node) {
   try {
     List<CollectionDataDO> res = collectionDataDao.findPage(1, 0, "" + node);
     // txtnode, txtstutas, txtvol, txthum, txttemp, txtbrt
     if (null == res || res.size() == 0) {
       txtnode.setText("node-" + node);
       txtstutas.setText("N/A");
       txtvol.setText("N/A");
       txthum.setText("N/A");
       txttemp.setText("N/A");
       txtbrt.setText("N/A");
     } else {
       txtnode.setText("node-" + node);
       txtstutas.setText("ok");
       txtvol.setText("" + res.get(0).getDvoltage());
       txthum.setText("" + res.get(0).getDhumidity());
       txttemp.setText("" + res.get(0).getDtemperature());
       txtbrt.setText("" + res.get(0).getDbrightness());
     }
   } catch (Exception e) {
     ADLog.error("初始数据异常", e);
   }
 }