package com.coolweather.app.activity;
import java.util.ArrayList;
import java.util.List;
import com.coolweather.app.R;
import com.coolweather.app.db.CoolWeatherDB;
import com.coolweather.app.model.City;
import com.coolweather.app.model.County;
import com.coolweather.app.model.Province;
import com.coolweather.app.util.HttpCallbackListener;
import com.coolweather.app.util.HttpUtil;
import com.coolweather.app.util.Utility;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class ChooseAreaActivity extends Activity{
public static final int LEVEL_PROVINCE=0;
public static final int LEVEL_CITY=1;
public static final int LEVEL_COUNTY=2;
private ProgressDialog progressDialog;
private TextView titleText;
private ListView listView;
private ArrayAdapter adapter;
private CoolWeatherDB coolWeatherDB;
private List dataList=new ArrayList();
private List provinceList;
private List cityList;
private List countyList;
private Province selectedProvince;
private City selectedCity;
private int currentLevel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.choose_area);
titleText=(TextView)findViewById(R.id.title_text);
listView=(ListView)findViewById(R.id.list_view);
adapter=new ArrayAdapter(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<?>arg0,View view, int index,long arg3) {
if(currentLevel==LEVEL_PROVINCE) {
selectedProvince=provinceList.get(index);
queryCities();
}else if(currentLevel==LEVEL_CITY) {
selectedCity=cityList.get(index);
queryCounties();
}
}
});
queryProvinces();
}
private void queryProvinces() {
// TODO Auto-generated method stub
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 {
String address="http://guolin.tech/api/china";
queryFromServer(address,"province");
}
}
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 {
int provinceCode=selectedProvince.getProvinceCode();
String address="http://guolin.tech/api/china/"+provinceCode;
queryFromServer(address,"city");
}
}
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);
titleText.setText(selectedCity.getCityName());
currentLevel=LEVEL_COUNTY;
}else {
int provinceCode=selectedProvince.getProvinceCode();
int cityCode=selectedCity.getCityCode();
String address="http://guolin.texh/api/china/"+provinceCode+"/"+cityCode;
queryFromServer(address,"county");
}
}
private void queryFromServer(String address,final String type) {
// TODO Auto-generated method stub
showProgressDialog();
HttpUtil.sendHttpRequest(address,new HttpCallbackListener() {
@Override
public void onFinish(String response) {
boolean result=false;
if("province".equals(type)) {
result=Utility.handleProvinceResponse(coolWeatherDB, response);
}else if("city".equals(type)){
result=Utility.handleCityResponse(coolWeatherDB, response,selectedProvince.getId());
}else if("county".equals(type)) {
result=Utility.handleCountyResponse(coolWeatherDB, response,selectedCity.getId());
}
if(result) {
runOnUiThread(new Runnable() {
@Override
public void run() {
closeProgressDialog();
if("province".equals(type)) {
queryProvinces();
}else if("city".equals(type)) {
queryCities();
}else if("county".equals(type)) {
queryCounties();
}
}
});
}
}
@Override
public void onError(Exception e) {
runOnUiThread(new Runnable(){
@Override
public void run() {
closeProgressDialog();
Toast.makeText(ChooseAreaActivity.this,"加载失败", Toast.LENGTH_LONG).show();
}
});
}
});
}
private void showProgressDialog() {
// TODO Auto-generated method stub
if(progressDialog==null) {
progressDialog=new ProgressDialog(this);
progressDialog.setMessage("正在加载");
progressDialog.setCanceledOnTouchOutside(false);
}
progressDialog.show();
}
private void closeProgressDialog() {
if(progressDialog!=null) {
progressDialog.dismiss();
}
}
@Override
public void onBackPressed() {
if(currentLevel==LEVEL_COUNTY) {
queryCities();
}else if(currentLevel==LEVEL_CITY) {
queryProvinces();
}else {
finish();
}
}
}
