/** 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。 */
private void queryProvinces() {
provinceList = coolWeatherDB.loadProvinces();
if (provinceList.size() > 0) {
dataList.clear();
for (Province province : provinceList) {
dataList.add(province.getProvinceName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
titleText.setText("中国");
currentLevel = LEVEL_PROVINCE;
} else {
queryFromServer(null, "province");
}
}
/** 查询选中省内所有的市，优先从数据库查询，如果没有查询到再去服务器上查询。 */
private void queryCities() {
cityList = coolWeatherDB.loadCities(selectedProvince.getId());
if (cityList.size() > 0) {
dataList.clear();
for (City city : cityList) {
dataList.add(city.getCityName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
titleText.setText(selectedProvince.getProvinceName());
currentLevel = LEVEL_CITY;
} else {
queryFromServer(selectedProvince.getProvinceCode(), "city");
}
}
/** 解析和处理服务器返回的省级数据 */
public static synchronized boolean handleProvincesResponse(
CoolWeatherDB coolWeatherDB, String response) {
if (!TextUtils.isEmpty(response)) {
String[] allProvinces = response.split(",");
if (allProvinces != null && allProvinces.length > 0) {
for (String p : allProvinces) {
String[] array = p.split("\\|");
Province province = new Province();
province.setProvinceCode(array[0]);
province.setProvinceName(array[1]);
// 将解析出来的数据存储到Province表
coolWeatherDB.saveProvince(province);
}
return true;
}
}
return false;
}