/***查询全国所有的省，优先从数据库查询，如果没有查询到再去服务器上查询。*/privatevoidqueryProvinces(){provinceList=coolWeatherDB.loadProvinces();if(provinceList.size()>0){dataList.clear();for(Provinceprovince:provinceList){dataList.add(province.getProvinceName());}adapter.notifyDataSetChanged();listView.setSel