private void queryCities() {
mCityList = coolWeatherDB.loadCities(selectedProvince.getId());
if (mCityList.size() > 0) {
dataList.clear();
for (City city : mCityList) {
dataList.add(city.getCityName());
}
adapter.notifyDataSetChanged();
listview.setSelection(0);
titleText.setText(selectedProvince.getProvinceName());
currentLevel = LEVEL_CITY;
} else {
queryFromServer(selectedProvince.getProvinceCode(), "city");
}
}
