@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.choose_area);
listView = (ListView) findViewById(R.id.ListviewId);
textView = (TextView) findViewById(R.id.TitleId);
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dataList);
listView.setAdapter(adapter);
coolWeatherDB = CoolWeatherDB.getInstance(this);
listView.setOnItemClickListener(
new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// TODO Auto-generated method stub
if (currentLevel == LEVEL_PROVINCE) {
selectedProvince = provinceList.get(position);
queryCities();
} else if (currentLevel == LEVEL_CITY) {
selectedCity = cityList.get(position);
queryCounties();
}
}
});
// Toast.makeText(this, "dasd", Toast.LENGTH_SHORT).show();
queryProvinces(); // 加载省级数据
}
/** 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() {
// TODO Auto-generated method stub
provinceList = coolWeatherDB.loadProvince();
if (provinceList.size() > 0) {
dataList.clear();
for (Province province : provinceList) {
dataList.add(province.getProvinceName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
textView.setText("中国");
currentLevel = LEVEL_PROVINCE;
} else {
queryFromServer(null, "province");
}
}
/** 查询选中市内所有的县，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 queryCounties() {
// TODO Auto-generated method stub
countyList = coolWeatherDB.loadCounties(selectedCity.getId());
if (countyList.size() > 0) {
dataList.clear();
for (County county : countyList) {
dataList.add(county.getCountyName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
textView.setText(selectedCity.getCityName());
currentLevel = LEVEL_COUNTY;
} else {
queryFromServer(selectedCity.getCityCode(), "county");
}
}