/** 将County实例存储到数据库。 */
public void saveCounty(County county) {
if (county != null) {
ContentValues values = new ContentValues();
values.put("county_name", county.getCountyName());
values.put("county_code", county.getCountyCode());
values.put("city_id", county.getCityId());
db.insert("County", null, values);
}
}
/** 从数据库读取某城市下所有的县信息。 */
public List<County> loadCounties(int cityId) {
List<County> list = new ArrayList<County>();
Cursor cursor =
db.query(
"County", null, "city_id = ?", new String[] {String.valueOf(cityId)}, null, null, null);
if (cursor.moveToFirst()) {
do {
County county = new County();
county.setId(cursor.getInt(cursor.getColumnIndex("id")));
county.setCountyName(cursor.getString(cursor.getColumnIndex("county_name")));
county.setCountyCode(cursor.getString(cursor.getColumnIndex("county_code")));
county.setCityId(cityId);
list.add(county);
} while (cursor.moveToNext());
}
return list;
}