package com. Example. Administrator. Coolweather; 


The import android. App. ProgressDialog; 
The import android. OS. Bundle; 
The import android. Support. The v4. App. Fragments; 

The import android. View. LayoutInflater; 
The import android. View. The view; 
The import android. View. ViewGroup; 
The import android. Widget. AdapterView; 
The import android. Widget. ArrayAdapter; 
The import android. Widget. The Button; 
The import android. Widget. ListView. 
The import android. Widget. TextView; 
The import android. Widget. Toast; 

The import com. Example. Administrator. Coolweather. The City; 
The import com. Example. Administrator. Coolweather. The County; 
The import com. Example. Administrator. Coolweather. The Province; 
The import com. Example. Administrator. Coolweather. Util. HttpUtil; 
The import com. Example. Administrator. Coolweather. Util. The Utility; 

The import org. Litepal. Crud. DataSupport; 

Import the Java. IO. IOException; 
Import the Java. Util. ArrayList; 
import java.util.List; 

The import okhttp3. Call; 
The import okhttp3. Callback; 
The import okhttp3. The Response; 

/* * 
* Created by Administrator on 2018/4/24. 
*/

Public class ChooseAreaFragment extends fragments {
Public static final ints LEVEL_PROVINCE=0; 
Public static final ints LEVEL_CITY=1; 
Public static final ints LEVEL_COUNTY=2; 
Private ProgressDialog ProgressDialog. 
Private TextView titleText; 
Private Button backButton; 

Private ListView ListView. 
Private ArrayAdapter Adapter. 
Private List The dataList=new ArrayList<> (a); 

Private List ProvinceList; 
Private List CityList; 
Private List CountyList; 

Private Province selectedProvince; 
Private City selectedCity; 
//the currently selected level 
Private int currentLevel; 


@ Override 
Public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View the View=inflater. Inflate (R.l ayout. Choose_area, container, false); 
TitleText=(TextView) view. The findViewById (R.i which itle_text); 
BackButton=(Button) view. The findViewById (R.i db ack_button); 
ListView=(listView) view. The findViewById (R.i d.l ist_view); 
Adapter=new ArrayAdapter<> (getContext (), the android R.l ayout. Simple_list_item_1, dataList); 
ListView. SetAdapter (adapter); 
Return the view; 
} 

@ Override 
Public void onActivityCreated (Bundle savedInstanceState) {
Super. OnActivityCreated (savedInstanceState); 
ListView. SetOnItemClickListener (new AdapterView. OnItemClickListener () {
@ Override 
Public void onItemClick (AdapterView<?> The parent, View View, int position, long id) {
If (currentLevel==LEVEL_PROVINCE) {
SelectedProvince=provinceList. Get (position); 
QueryCities (); 
{} else if (currentLevel==LEVEL_CITY) 
SelectedCity=cityList. Get (position); 
QueryCounties (); 
} 
} 
}); 
BackButton. SetOnClickListener (new View. An OnClickListener () {
@ Override 
Public void onClick (View v) {
If (currentLevel==LEVEL_COUNTY) {
QueryCities (); 
{} else if (currentLevel==LEVEL_CITY) 
QueryProvinces (); 
} 
} 
}); 
QueryProvinces (); 
} 

/* 
Query all across the country, province, first from the database query, if it weren't for the query to query on the server 
In a ListView in 
*/
Private void queryProvinces () {
TitleText. SetText (" China "); 
BackButton. SetVisibility (View. GONE); 
ProvinceList=DataSupport. The.findall (Province. Class); 
If (provinceList. The size () & gt; 0 {
DataList. The clear (); 
For (Province Province: provinceList) {
DataList. Add (province. GetProvinceName () + "" + province. GetProvinceCode () +" "+ province. The getId ()); 
} 
Adapter. NotifyDataSetChanged (); 
ListView. SetSelection (0); 
CurrentLevel=LEVEL_PROVINCE; 
} else {
String address="http://guolin.tech/api/china"; 
QueryFromServer (address, "the province"); 
} 
} 

/* 
Query to select all of the city in the province, the first from the database query, if there is no query to query to the server 
In a ListView in 
*/
Private void queryCities () {
TitleText. SetText (selectedProvince getProvinceName ()); 
BackButton. SetVisibility (the VISIBLE); 
CityList=DataSupport. Where (" provinceid=?" String. The valueOf (selectedProvince getId ())). The find (City. Class); 
If (cityList. The size () & gt; 0 {
DataList. The clear (); 
For (City City: cityList) {
DataList. Add (city. GetCityName () + "" + city. GetCityCode () +" "+ city. GetProvinceId ()); 
} 
Adapter. NotifyDataSetChanged (); 
ListView. SetSelection (0); 
CurrentLevel=LEVEL_CITY; 
} else {
Int provinceCode=selectedProvince. GetProvinceCode (); 
String address="http://guolin.tech/api/china/" + provinceCode; 
QueryFromServer (address, city, ""); 
} 
} 

/* 
Query of all counties in the city, the first from a database query, if it weren't for the query to query on the server 
In a ListView in 
*/
Private void queryCounties () {
TitleText. SetText (selectedCity getCityName ()); 
BackButton. SetVisibility (the VISIBLE); 
CountyList=DataSupport. Where (" cityid=?" nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull