Android实现城市选择三级联动

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我是靠谱客的博主无聊小蘑菇，这篇文章主要介绍Android实现城市选择三级联动，现在分享给大家，希望可以做个参考。

本文实例为大家分享了Android实现城市选择三级联动的具体代码，供大家参考，具体内容如下

效果图，用于城市选择三级联动，带ID返回

1. 添加依赖

复制代码

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//三级联动
 implementation 'com.contrarywind:Android-PickerView:4.1.8'
 // gosn解析
 implementation 'com.google.code.gson:gson:2.8.5'

2.文件转换成json串工具类

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import android.content.Context;
import android.content.res.AssetManager;
 
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
 
/**
 * Created by dell on 2019/9/16.
 */
 
public class JsonFileReader {
 public static String getJson(Context context, String fileName) {
 ByteArrayOutputStream baos = new ByteArrayOutputStream();
 try {
  AssetManager assetManager = context.getAssets();
  InputStream inputStream = assetManager.open(fileName);
  BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
  byte[] buffer = new byte[1024];
  int len;
  while ((len = bufferedInputStream.read(buffer)) != -1) {
  baos.write(buffer, 0, len);
  }
 } catch (IOException e) {
  e.printStackTrace();
 }
 return baos.toString();
 }
}

3.json转换成集合工具类

复制代码

import android.content.Context;
 
import com.google.gson.Gson;
 
import org.json.JSONArray;
 
import java.util.ArrayList;
 
/**
 * Created by dell on 2019/9/16.
 */
 
public class LevelsListDate {
 private ArrayList<JsonBean> options1Items = new ArrayList<>();
 private ArrayList<ArrayList<String>> options2Items = new ArrayList<>();
 private ArrayList<ArrayList<ArrayList<String>>> options3Items = new ArrayList<>();
 private Context context;
 
 public LevelsListDate(Context context) {
 this.context = context;
 }
 
 public ArrayList<JsonBean> initJsonData(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 options1Items.clear();
 options1Items = parseData(JsonData);//用Gson 转成实体
 return options1Items;
 }
 
 public ArrayList<ArrayList<String>> initJsonData1(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 ArrayList<JsonBean> jsonBean = parseData(JsonData);//用Gson 转成实体
 options2Items.clear();
 for (int i = 0; i < jsonBean.size(); i++) {//遍历省份
  ArrayList<String> CityList = new ArrayList<>();//该省的城市列表（第二级）
  ArrayList<ArrayList<String>> Province_AreaList = new ArrayList<>();//该省的所有地区列表（第三极）
  for (int c = 0; c < jsonBean.get(i).getCity().size(); c++) {//遍历该省份的所有城市
  String CityName = jsonBean.get(i).getCity().get(c).getREGION_NAME();
  CityList.add(CityName);//添加城市
  ArrayList<String> City_AreaList = new ArrayList<>();//该城市的所有地区列表
  //如果无地区数据，建议添加空字符串，防止数据为null 导致三个选项长度不匹配造成崩溃
  if (jsonBean.get(i).getCity().get(c).getRes() == null
   || jsonBean.get(i).getCity().get(c).getRes().size() == 0) {
   City_AreaList.add("");
  } else {
   for (int d = 0; d < jsonBean.get(i).getCity().get(c).getRes().size(); d++) {//该城市对应地区所有数据
   String AreaName = jsonBean.get(i).getCity().get(c).getRes().get(d).getREGION_NAME();
   City_AreaList.add(AreaName);//添加该城市所有地区数据
   }
  }
  Province_AreaList.add(City_AreaList);//添加该省所有地区数据
  }
  /**
  * 添加城市数据
  */
  options2Items.add(CityList);
 }
 return options2Items;
 }
 
 public ArrayList<ArrayList<ArrayList<String>>> initJsonData2(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 ArrayList<JsonBean> jsonBean = parseData(JsonData);//用Gson 转成实体
 options3Items.clear();
 for (int i = 0; i < jsonBean.size(); i++) {//遍历省份
  ArrayList<String> CityList = new ArrayList<>();//该省的城市列表（第二级）
  ArrayList<ArrayList<String>> Province_AreaList = new ArrayList<>();//该省的所有地区列表（第三极）
  for (int c = 0; c < jsonBean.get(i).getCity().size(); c++) {//遍历该省份的所有城市
  String CityName = jsonBean.get(i).getCity().get(c).getREGION_NAME();
  CityList.add(CityName);//添加城市
  ArrayList<String> City_AreaList = new ArrayList<>();//该城市的所有地区列表
  //如果无地区数据，建议添加空字符串，防止数据为null 导致三个选项长度不匹配造成崩溃
  if (jsonBean.get(i).getCity().get(c).getRes() == null
   || jsonBean.get(i).getCity().get(c).getRes().size() == 0) {
   City_AreaList.add("");
  } else {
   for (int d = 0; d < jsonBean.get(i).getCity().get(c).getRes().size(); d++) {//该城市对应地区所有数据
   String AreaName = jsonBean.get(i).getCity().get(c).getRes().get(d).getREGION_NAME();
   City_AreaList.add(AreaName);//添加该城市所有地区数据
   }
  }
  Province_AreaList.add(City_AreaList);//添加该省所有地区数据
  }
  /**
  * 添加地区数据
  */
  options3Items.add(Province_AreaList);
 }
 return options3Items;
 }
 
 public ArrayList<JsonBean> parseData(String result) {//Gson 解析
 ArrayList<JsonBean> detail = new ArrayList<>();
 try {
  JSONArray data = new JSONArray(result);
  Gson gson = new Gson();
  for (int i = 0; i < data.length(); i++) {
  JsonBean entity = gson.fromJson(data.optJSONObject(i).toString(), JsonBean.class);
  detail.add(entity);
  }
 } catch (Exception e) {
  e.printStackTrace();
 }
 return detail;
 }
}

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import android.content.Context;
 
import com.google.gson.Gson;
 
import org.json.JSONArray;
 
import java.util.ArrayList;
 
/**
 * Created by dell on 2019/9/16.
 */
 
public class LevelsListDate {
 private ArrayList<JsonBean> options1Items = new ArrayList<>();
 private ArrayList<ArrayList<String>> options2Items = new ArrayList<>();
 private ArrayList<ArrayList<ArrayList<String>>> options3Items = new ArrayList<>();
 private Context context;
 
 public LevelsListDate(Context context) {
 this.context = context;
 }
 
 public ArrayList<JsonBean> initJsonData(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 options1Items.clear();
 options1Items = parseData(JsonData);//用Gson 转成实体
 return options1Items;
 }
 
 public ArrayList<ArrayList<String>> initJsonData1(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 ArrayList<JsonBean> jsonBean = parseData(JsonData);//用Gson 转成实体
 options2Items.clear();
 for (int i = 0; i < jsonBean.size(); i++) {//遍历省份
  ArrayList<String> CityList = new ArrayList<>();//该省的城市列表（第二级）
  ArrayList<ArrayList<String>> Province_AreaList = new ArrayList<>();//该省的所有地区列表（第三极）
  for (int c = 0; c < jsonBean.get(i).getCity().size(); c++) {//遍历该省份的所有城市
  String CityName = jsonBean.get(i).getCity().get(c).getREGION_NAME();
  CityList.add(CityName);//添加城市
  ArrayList<String> City_AreaList = new ArrayList<>();//该城市的所有地区列表
  //如果无地区数据，建议添加空字符串，防止数据为null 导致三个选项长度不匹配造成崩溃
  if (jsonBean.get(i).getCity().get(c).getRes() == null
   || jsonBean.get(i).getCity().get(c).getRes().size() == 0) {
   City_AreaList.add("");
  } else {
   for (int d = 0; d < jsonBean.get(i).getCity().get(c).getRes().size(); d++) {//该城市对应地区所有数据
   String AreaName = jsonBean.get(i).getCity().get(c).getRes().get(d).getREGION_NAME();
   City_AreaList.add(AreaName);//添加该城市所有地区数据
   }
  }
  Province_AreaList.add(City_AreaList);//添加该省所有地区数据
  }
  /**
  * 添加城市数据
  */
  options2Items.add(CityList);
 }
 return options2Items;
 }
 
 public ArrayList<ArrayList<ArrayList<String>>> initJsonData2(String path) {
 String JsonData = JsonFileReader.getJson(context, path);
 ArrayList<JsonBean> jsonBean = parseData(JsonData);//用Gson 转成实体
 options3Items.clear();
 for (int i = 0; i < jsonBean.size(); i++) {//遍历省份
  ArrayList<String> CityList = new ArrayList<>();//该省的城市列表（第二级）
  ArrayList<ArrayList<String>> Province_AreaList = new ArrayList<>();//该省的所有地区列表（第三极）
  for (int c = 0; c < jsonBean.get(i).getCity().size(); c++) {//遍历该省份的所有城市
  String CityName = jsonBean.get(i).getCity().get(c).getREGION_NAME();
  CityList.add(CityName);//添加城市
  ArrayList<String> City_AreaList = new ArrayList<>();//该城市的所有地区列表
  //如果无地区数据，建议添加空字符串，防止数据为null 导致三个选项长度不匹配造成崩溃
  if (jsonBean.get(i).getCity().get(c).getRes() == null
   || jsonBean.get(i).getCity().get(c).getRes().size() == 0) {
   City_AreaList.add("");
  } else {
   for (int d = 0; d < jsonBean.get(i).getCity().get(c).getRes().size(); d++) {//该城市对应地区所有数据
   String AreaName = jsonBean.get(i).getCity().get(c).getRes().get(d).getREGION_NAME();
   City_AreaList.add(AreaName);//添加该城市所有地区数据
   }
  }
  Province_AreaList.add(City_AreaList);//添加该省所有地区数据
  }
  /**
  * 添加地区数据
  */
  options3Items.add(Province_AreaList);
 }
 return options3Items;
 }
 
 public ArrayList<JsonBean> parseData(String result) {//Gson 解析
 ArrayList<JsonBean> detail = new ArrayList<>();
 try {
  JSONArray data = new JSONArray(result);
  Gson gson = new Gson();
  for (int i = 0; i < data.length(); i++) {
  JsonBean entity = gson.fromJson(data.optJSONObject(i).toString(), JsonBean.class);
  detail.add(entity);
  }
 } catch (Exception e) {
  e.printStackTrace();
 }
 return detail;
 }
}

4.jsonBean类

复制代码

import com.contrarywind.interfaces.IPickerViewData;
 
import java.util.List;
 
/**
 * Created by dell on 2019/9/16.
 */
 
public class JsonBean implements IPickerViewData {
 
 /**
 * ID : 7971
 * PARENT_ID : 7459
 * REGION_NAME : 辽宁省
 * city : [{"ID":7972,"PARENT_ID":7971,"REGION_NAME":"沈阳市","res":[{"ID":7973,"PARENT_ID":7972,"REGION_NAME":"和平区"},{"ID":7974,"PARENT_ID":7972,"REGION_NAME":"沈河区"},{"ID":7975,"PARENT_ID":7972,"REGION_NAME":"大东区"},{"ID":7976,"PARENT_ID":7972,"REGION_NAME":"皇姑区"},{"ID":7977,"PARENT_ID":7972,"REGION_NAME":"铁西区"},{"ID":7978,"PARENT_ID":7972,"REGION_NAME":"苏家屯区"},{"ID":7979,"PARENT_ID":7972,"REGION_NAME":"东陵区"},{"ID":7980,"PARENT_ID":7972,"REGION_NAME":"新城子区"},{"ID":7981,"PARENT_ID":7972,"REGION_NAME":"于洪区"},{"ID":7982,"PARENT_ID":7972,"REGION_NAME":"辽中县"},{"ID":7983,"PARENT_ID":7972,"REGION_NAME":"康平县"},{"ID":7984,"PARENT_ID":7972,"REGION_NAME":"法库县"},{"ID":7985,"PARENT_ID":7972,"REGION_NAME":"新民市"},{"ID":7986,"PARENT_ID":7972,"REGION_NAME":"浑南新区"},{"ID":7987,"PARENT_ID":7972,"REGION_NAME":"张士开发区"},{"ID":7988,"PARENT_ID":7972,"REGION_NAME":"沈北新区"},{"ID":7989,"PARENT_ID":7972,"REGION_NAME":"其它区"}]},{"ID":7990,"PARENT_ID":7971,"REGION_NAME":"大连市","res":[{"ID":7991,"PARENT_ID":7990,"REGION_NAME":"中山区"},{"ID":7992,"PARENT_ID":7990,"REGION_NAME":"西岗区"},{"ID":7993,"PARENT_ID":7990,"REGION_NAME":"沙河口区"},{"ID":7994,"PARENT_ID":7990,"REGION_NAME":"甘井子区"},{"ID":7995,"PARENT_ID":7990,"REGION_NAME":"旅顺口区"},{"ID":7996,"PARENT_ID":7990,"REGION_NAME":"金州区"},{"ID":7997,"PARENT_ID":7990,"REGION_NAME":"长海县"},{"ID":7998,"PARENT_ID":7990,"REGION_NAME":"开发区"},{"ID":7999,"PARENT_ID":7990,"REGION_NAME":"瓦房店市"},{"ID":8000,"PARENT_ID":7990,"REGION_NAME":"普兰店市"},{"ID":8001,"PARENT_ID":7990,"REGION_NAME":"庄河市"},{"ID":8002,"PARENT_ID":7990,"REGION_NAME":"岭前区"},{"ID":8003,"PARENT_ID":7990,"REGION_NAME":"其它区"}]},{"ID":8004,"PARENT_ID":7971,"REGION_NAME":"鞍山市","res":[{"ID":8005,"PARENT_ID":8004,"REGION_NAME":"铁东区"},{"ID":8006,"PARENT_ID":8004,"REGION_NAME":"铁西区"},{"ID":8007,"PARENT_ID":8004,"REGION_NAME":"立山区"},{"ID":8008,"PARENT_ID":8004,"REGION_NAME":"千山区"},{"ID":8009,"PARENT_ID":8004,"REGION_NAME":"台安县"},{"ID":8010,"PARENT_ID":8004,"REGION_NAME":"岫岩满族自治县"},{"ID":8011,"PARENT_ID":8004,"REGION_NAME":"高新区"},{"ID":8012,"PARENT_ID":8004,"REGION_NAME":"海城市"},{"ID":8013,"PARENT_ID":8004,"REGION_NAME":"其它区"}]},{"ID":8014,"PARENT_ID":7971,"REGION_NAME":"抚顺市","res":[{"ID":8015,"PARENT_ID":8014,"REGION_NAME":"新抚区"},{"ID":8016,"PARENT_ID":8014,"REGION_NAME":"东洲区"},{"ID":8017,"PARENT_ID":8014,"REGION_NAME":"望花区"},{"ID":8018,"PARENT_ID":8014,"REGION_NAME":"顺城区"},{"ID":8019,"PARENT_ID":8014,"REGION_NAME":"抚顺县"},{"ID":8020,"PARENT_ID":8014,"REGION_NAME":"新宾满族自治县"},{"ID":8021,"PARENT_ID":8014,"REGION_NAME":"清原满族自治县"},{"ID":8022,"PARENT_ID":8014,"REGION_NAME":"其它区"}]},{"ID":8023,"PARENT_ID":7971,"REGION_NAME":"本溪市","res":[{"ID":8024,"PARENT_ID":8023,"REGION_NAME":"平山区"},{"ID":8025,"PARENT_ID":8023,"REGION_NAME":"溪湖区"},{"ID":8026,"PARENT_ID":8023,"REGION_NAME":"明山区"},{"ID":8027,"PARENT_ID":8023,"REGION_NAME":"南芬区"},{"ID":8028,"PARENT_ID":8023,"REGION_NAME":"本溪满族自治县"},{"ID":8029,"PARENT_ID":8023,"REGION_NAME":"桓仁满族自治县"},{"ID":8030,"PARENT_ID":8023,"REGION_NAME":"其它区"}]},{"ID":8031,"PARENT_ID":7971,"REGION_NAME":"丹东市","res":[{"ID":8032,"PARENT_ID":8031,"REGION_NAME":"元宝区"},{"ID":8033,"PARENT_ID":8031,"REGION_NAME":"振兴区"},{"ID":8034,"PARENT_ID":8031,"REGION_NAME":"振安区"},{"ID":8035,"PARENT_ID":8031,"REGION_NAME":"宽甸满族自治县"},{"ID":8036,"PARENT_ID":8031,"REGION_NAME":"东港市"},{"ID":8037,"PARENT_ID":8031,"REGION_NAME":"凤城市"},{"ID":8038,"PARENT_ID":8031,"REGION_NAME":"其它区"}]},{"ID":8039,"PARENT_ID":7971,"REGION_NAME":"锦州市","res":[{"ID":8040,"PARENT_ID":8039,"REGION_NAME":"古塔区"},{"ID":8041,"PARENT_ID":8039,"REGION_NAME":"凌河区"},{"ID":8042,"PARENT_ID":8039,"REGION_NAME":"太和区"},{"ID":8043,"PARENT_ID":8039,"REGION_NAME":"黑山县"},{"ID":8044,"PARENT_ID":8039,"REGION_NAME":"义县"},{"ID":8045,"PARENT_ID":8039,"REGION_NAME":"凌海市"},{"ID":8046,"PARENT_ID":8039,"REGION_NAME":"北镇市"},{"ID":8047,"PARENT_ID":8039,"REGION_NAME":"其它区"}]},{"ID":8048,"PARENT_ID":7971,"REGION_NAME":"营口市","res":[{"ID":8049,"PARENT_ID":8048,"REGION_NAME":"站前区"},{"ID":8050,"PARENT_ID":8048,"REGION_NAME":"西市区"},{"ID":8051,"PARENT_ID":8048,"REGION_NAME":"鲅鱼圈区"},{"ID":8052,"PARENT_ID":8048,"REGION_NAME":"老边区"},{"ID":8053,"PARENT_ID":8048,"REGION_NAME":"盖州市"},{"ID":8054,"PARENT_ID":8048,"REGION_NAME":"大石桥市"},{"ID":8055,"PARENT_ID":8048,"REGION_NAME":"其它区"}]},{"ID":8056,"PARENT_ID":7971,"REGION_NAME":"阜新市","res":[{"ID":8057,"PARENT_ID":8056,"REGION_NAME":"海州区"},{"ID":8058,"PARENT_ID":8056,"REGION_NAME":"新邱区"},{"ID":8059,"PARENT_ID":8056,"REGION_NAME":"太平区"},{"ID":8060,"PARENT_ID":8056,"REGION_NAME":"清河门区"},{"ID":8061,"PARENT_ID":8056,"REGION_NAME":"细河区"},{"ID":8062,"PARENT_ID":8056,"REGION_NAME":"阜新蒙古族自治县"},{"ID":8063,"PARENT_ID":8056,"REGION_NAME":"彰武县"},{"ID":8064,"PARENT_ID":8056,"REGION_NAME":"其它区"}]},{"ID":8065,"PARENT_ID":7971,"REGION_NAME":"辽阳市","res":[{"ID":8066,"PARENT_ID":8065,"REGION_NAME":"白塔区"},{"ID":8067,"PARENT_ID":8065,"REGION_NAME":"文圣区"},{"ID":8068,"PARENT_ID":8065,"REGION_NAME":"宏伟区"},{"ID":8069,"PARENT_ID":8065,"REGION_NAME":"弓长岭区"},{"ID":8070,"PARENT_ID":8065,"REGION_NAME":"太子河区"},{"ID":8071,"PARENT_ID":8065,"REGION_NAME":"辽阳县"},{"ID":8072,"PARENT_ID":8065,"REGION_NAME":"灯塔市"},{"ID":8073,"PARENT_ID":8065,"REGION_NAME":"其它区"}]},{"ID":8074,"PARENT_ID":7971,"REGION_NAME":"盘锦市","res":[{"ID":8075,"PARENT_ID":8074,"REGION_NAME":"双台子区"},{"ID":8076,"PARENT_ID":8074,"REGION_NAME":"兴隆台区"},{"ID":8077,"PARENT_ID":8074,"REGION_NAME":"大洼县"},{"ID":8078,"PARENT_ID":8074,"REGION_NAME":"盘山县"},{"ID":8079,"PARENT_ID":8074,"REGION_NAME":"其它区"}]},{"ID":8080,"PARENT_ID":7971,"REGION_NAME":"铁岭市","res":[{"ID":8081,"PARENT_ID":8080,"REGION_NAME":"银州区"},{"ID":8082,"PARENT_ID":8080,"REGION_NAME":"清河区"},{"ID":8083,"PARENT_ID":8080,"REGION_NAME":"铁岭县"},{"ID":8084,"PARENT_ID":8080,"REGION_NAME":"西丰县"},{"ID":8085,"PARENT_ID":8080,"REGION_NAME":"昌图县"},{"ID":8086,"PARENT_ID":8080,"REGION_NAME":"调兵山市"},{"ID":8087,"PARENT_ID":8080,"REGION_NAME":"开原市"},{"ID":8088,"PARENT_ID":8080,"REGION_NAME":"其它区"}]},{"ID":8089,"PARENT_ID":7971,"REGION_NAME":"朝阳市","res":[{"ID":8090,"PARENT_ID":8089,"REGION_NAME":"双塔区"},{"ID":8091,"PARENT_ID":8089,"REGION_NAME":"龙城区"},{"ID":8092,"PARENT_ID":8089,"REGION_NAME":"朝阳县"},{"ID":8093,"PARENT_ID":8089,"REGION_NAME":"建平县"},{"ID":8094,"PARENT_ID":8089,"REGION_NAME":"喀喇沁左翼蒙古族自治县"},{"ID":8095,"PARENT_ID":8089,"REGION_NAME":"北票市"},{"ID":8096,"PARENT_ID":8089,"REGION_NAME":"凌源市"},{"ID":8097,"PARENT_ID":8089,"REGION_NAME":"其它区"}]},{"ID":8098,"PARENT_ID":7971,"REGION_NAME":"葫芦岛市","res":[{"ID":8099,"PARENT_ID":8098,"REGION_NAME":"连山区"},{"ID":8100,"PARENT_ID":8098,"REGION_NAME":"龙港区"},{"ID":8101,"PARENT_ID":8098,"REGION_NAME":"南票区"},{"ID":8102,"PARENT_ID":8098,"REGION_NAME":"绥中县"},{"ID":8103,"PARENT_ID":8098,"REGION_NAME":"建昌县"},{"ID":8104,"PARENT_ID":8098,"REGION_NAME":"兴城市"},{"ID":8105,"PARENT_ID":8098,"REGION_NAME":"其它区"}]}]
 */
 
 private int ID;
 private int PARENT_ID;
 private String REGION_NAME;
 private List<CityBean> city;
 
 public int getID() {
 return ID;
 }
 
 public void setID(int ID) {
 this.ID = ID;
 }
 
 public int getPARENT_ID() {
 return PARENT_ID;
 }
 
 public void setPARENT_ID(int PARENT_ID) {
 this.PARENT_ID = PARENT_ID;
 }
 
 public String getREGION_NAME() {
 return REGION_NAME;
 }
 
 public void setREGION_NAME(String REGION_NAME) {
 this.REGION_NAME = REGION_NAME;
 }
 
 public List<CityBean> getCity() {
 return city;
 }
 
 public void setCity(List<CityBean> city) {
 this.city = city;
 }
 
 @Override
 public String getPickerViewText() {
 return this.REGION_NAME;
 }
 
 public static class CityBean {
 /**
  * ID : 7972
  * PARENT_ID : 7971
  * REGION_NAME : 沈阳市
  * res : [{"ID":7973,"PARENT_ID":7972,"REGION_NAME":"和平区"},{"ID":7974,"PARENT_ID":7972,"REGION_NAME":"沈河区"},{"ID":7975,"PARENT_ID":7972,"REGION_NAME":"大东区"},{"ID":7976,"PARENT_ID":7972,"REGION_NAME":"皇姑区"},{"ID":7977,"PARENT_ID":7972,"REGION_NAME":"铁西区"},{"ID":7978,"PARENT_ID":7972,"REGION_NAME":"苏家屯区"},{"ID":7979,"PARENT_ID":7972,"REGION_NAME":"东陵区"},{"ID":7980,"PARENT_ID":7972,"REGION_NAME":"新城子区"},{"ID":7981,"PARENT_ID":7972,"REGION_NAME":"于洪区"},{"ID":7982,"PARENT_ID":7972,"REGION_NAME":"辽中县"},{"ID":7983,"PARENT_ID":7972,"REGION_NAME":"康平县"},{"ID":7984,"PARENT_ID":7972,"REGION_NAME":"法库县"},{"ID":7985,"PARENT_ID":7972,"REGION_NAME":"新民市"},{"ID":7986,"PARENT_ID":7972,"REGION_NAME":"浑南新区"},{"ID":7987,"PARENT_ID":7972,"REGION_NAME":"张士开发区"},{"ID":7988,"PARENT_ID":7972,"REGION_NAME":"沈北新区"},{"ID":7989,"PARENT_ID":7972,"REGION_NAME":"其它区"}]
  */
 
 private int ID;
 private int PARENT_ID;
 private String REGION_NAME;
 private List<ResBean> res;
 
 public int getID() {
  return ID;
 }
 
 public void setID(int ID) {
  this.ID = ID;
 }
 
 public int getPARENT_ID() {
  return PARENT_ID;
 }
 
 public void setPARENT_ID(int PARENT_ID) {
  this.PARENT_ID = PARENT_ID;
 }
 
 public String getREGION_NAME() {
  return REGION_NAME;
 }
 
 public void setREGION_NAME(String REGION_NAME) {
  this.REGION_NAME = REGION_NAME;
 }
 
 public List<ResBean> getRes() {
  return res;
 }
 
 public void setRes(List<ResBean> res) {
  this.res = res;
 }
 
 public static class ResBean {
  /**
  * ID : 7973
  * PARENT_ID : 7972
  * REGION_NAME : 和平区
  */
 
  private int ID;
  private int PARENT_ID;
  private String REGION_NAME;
 
  public int getID() {
  return ID;
  }
 
  public void setID(int ID) {
  this.ID = ID;
  }
 
  public int getPARENT_ID() {
  return PARENT_ID;
  }
 
  public void setPARENT_ID(int PARENT_ID) {
  this.PARENT_ID = PARENT_ID;
  }
 
  public String getREGION_NAME() {
  return REGION_NAME;
  }
 
  public void setREGION_NAME(String REGION_NAME) {
  this.REGION_NAME = REGION_NAME;
  }
 }
 }
}

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import com.contrarywind.interfaces.IPickerViewData;
 
import java.util.List;
 
/**
 * Created by dell on 2019/9/16.
 */
 
public class JsonBean implements IPickerViewData {
 
 /**
 * ID : 7971
 * PARENT_ID : 7459
 * REGION_NAME : 辽宁省
 * city : [{"ID":7972,"PARENT_ID":7971,"REGION_NAME":"沈阳市","res":[{"ID":7973,"PARENT_ID":7972,"REGION_NAME":"和平区"},{"ID":7974,"PARENT_ID":7972,"REGION_NAME":"沈河区"},{"ID":7975,"PARENT_ID":7972,"REGION_NAME":"大东区"},{"ID":7976,"PARENT_ID":7972,"REGION_NAME":"皇姑区"},{"ID":7977,"PARENT_ID":7972,"REGION_NAME":"铁西区"},{"ID":7978,"PARENT_ID":7972,"REGION_NAME":"苏家屯区"},{"ID":7979,"PARENT_ID":7972,"REGION_NAME":"东陵区"},{"ID":7980,"PARENT_ID":7972,"REGION_NAME":"新城子区"},{"ID":7981,"PARENT_ID":7972,"REGION_NAME":"于洪区"},{"ID":7982,"PARENT_ID":7972,"REGION_NAME":"辽中县"},{"ID":7983,"PARENT_ID":7972,"REGION_NAME":"康平县"},{"ID":7984,"PARENT_ID":7972,"REGION_NAME":"法库县"},{"ID":7985,"PARENT_ID":7972,"REGION_NAME":"新民市"},{"ID":7986,"PARENT_ID":7972,"REGION_NAME":"浑南新区"},{"ID":7987,"PARENT_ID":7972,"REGION_NAME":"张士开发区"},{"ID":7988,"PARENT_ID":7972,"REGION_NAME":"沈北新区"},{"ID":7989,"PARENT_ID":7972,"REGION_NAME":"其它区"}]},{"ID":7990,"PARENT_ID":7971,"REGION_NAME":"大连市","res":[{"ID":7991,"PARENT_ID":7990,"REGION_NAME":"中山区"},{"ID":7992,"PARENT_ID":7990,"REGION_NAME":"西岗区"},{"ID":7993,"PARENT_ID":7990,"REGION_NAME":"沙河口区"},{"ID":7994,"PARENT_ID":7990,"REGION_NAME":"甘井子区"},{"ID":7995,"PARENT_ID":7990,"REGION_NAME":"旅顺口区"},{"ID":7996,"PARENT_ID":7990,"REGION_NAME":"金州区"},{"ID":7997,"PARENT_ID":7990,"REGION_NAME":"长海县"},{"ID":7998,"PARENT_ID":7990,"REGION_NAME":"开发区"},{"ID":7999,"PARENT_ID":7990,"REGION_NAME":"瓦房店市"},{"ID":8000,"PARENT_ID":7990,"REGION_NAME":"普兰店市"},{"ID":8001,"PARENT_ID":7990,"REGION_NAME":"庄河市"},{"ID":8002,"PARENT_ID":7990,"REGION_NAME":"岭前区"},{"ID":8003,"PARENT_ID":7990,"REGION_NAME":"其它区"}]},{"ID":8004,"PARENT_ID":7971,"REGION_NAME":"鞍山市","res":[{"ID":8005,"PARENT_ID":8004,"REGION_NAME":"铁东区"},{"ID":8006,"PARENT_ID":8004,"REGION_NAME":"铁西区"},{"ID":8007,"PARENT_ID":8004,"REGION_NAME":"立山区"},{"ID":8008,"PARENT_ID":8004,"REGION_NAME":"千山区"},{"ID":8009,"PARENT_ID":8004,"REGION_NAME":"台安县"},{"ID":8010,"PARENT_ID":8004,"REGION_NAME":"岫岩满族自治县"},{"ID":8011,"PARENT_ID":8004,"REGION_NAME":"高新区"},{"ID":8012,"PARENT_ID":8004,"REGION_NAME":"海城市"},{"ID":8013,"PARENT_ID":8004,"REGION_NAME":"其它区"}]},{"ID":8014,"PARENT_ID":7971,"REGION_NAME":"抚顺市","res":[{"ID":8015,"PARENT_ID":8014,"REGION_NAME":"新抚区"},{"ID":8016,"PARENT_ID":8014,"REGION_NAME":"东洲区"},{"ID":8017,"PARENT_ID":8014,"REGION_NAME":"望花区"},{"ID":8018,"PARENT_ID":8014,"REGION_NAME":"顺城区"},{"ID":8019,"PARENT_ID":8014,"REGION_NAME":"抚顺县"},{"ID":8020,"PARENT_ID":8014,"REGION_NAME":"新宾满族自治县"},{"ID":8021,"PARENT_ID":8014,"REGION_NAME":"清原满族自治县"},{"ID":8022,"PARENT_ID":8014,"REGION_NAME":"其它区"}]},{"ID":8023,"PARENT_ID":7971,"REGION_NAME":"本溪市","res":[{"ID":8024,"PARENT_ID":8023,"REGION_NAME":"平山区"},{"ID":8025,"PARENT_ID":8023,"REGION_NAME":"溪湖区"},{"ID":8026,"PARENT_ID":8023,"REGION_NAME":"明山区"},{"ID":8027,"PARENT_ID":8023,"REGION_NAME":"南芬区"},{"ID":8028,"PARENT_ID":8023,"REGION_NAME":"本溪满族自治县"},{"ID":8029,"PARENT_ID":8023,"REGION_NAME":"桓仁满族自治县"},{"ID":8030,"PARENT_ID":8023,"REGION_NAME":"其它区"}]},{"ID":8031,"PARENT_ID":7971,"REGION_NAME":"丹东市","res":[{"ID":8032,"PARENT_ID":8031,"REGION_NAME":"元宝区"},{"ID":8033,"PARENT_ID":8031,"REGION_NAME":"振兴区"},{"ID":8034,"PARENT_ID":8031,"REGION_NAME":"振安区"},{"ID":8035,"PARENT_ID":8031,"REGION_NAME":"宽甸满族自治县"},{"ID":8036,"PARENT_ID":8031,"REGION_NAME":"东港市"},{"ID":8037,"PARENT_ID":8031,"REGION_NAME":"凤城市"},{"ID":8038,"PARENT_ID":8031,"REGION_NAME":"其它区"}]},{"ID":8039,"PARENT_ID":7971,"REGION_NAME":"锦州市","res":[{"ID":8040,"PARENT_ID":8039,"REGION_NAME":"古塔区"},{"ID":8041,"PARENT_ID":8039,"REGION_NAME":"凌河区"},{"ID":8042,"PARENT_ID":8039,"REGION_NAME":"太和区"},{"ID":8043,"PARENT_ID":8039,"REGION_NAME":"黑山县"},{"ID":8044,"PARENT_ID":8039,"REGION_NAME":"义县"},{"ID":8045,"PARENT_ID":8039,"REGION_NAME":"凌海市"},{"ID":8046,"PARENT_ID":8039,"REGION_NAME":"北镇市"},{"ID":8047,"PARENT_ID":8039,"REGION_NAME":"其它区"}]},{"ID":8048,"PARENT_ID":7971,"REGION_NAME":"营口市","res":[{"ID":8049,"PARENT_ID":8048,"REGION_NAME":"站前区"},{"ID":8050,"PARENT_ID":8048,"REGION_NAME":"西市区"},{"ID":8051,"PARENT_ID":8048,"REGION_NAME":"鲅鱼圈区"},{"ID":8052,"PARENT_ID":8048,"REGION_NAME":"老边区"},{"ID":8053,"PARENT_ID":8048,"REGION_NAME":"盖州市"},{"ID":8054,"PARENT_ID":8048,"REGION_NAME":"大石桥市"},{"ID":8055,"PARENT_ID":8048,"REGION_NAME":"其它区"}]},{"ID":8056,"PARENT_ID":7971,"REGION_NAME":"阜新市","res":[{"ID":8057,"PARENT_ID":8056,"REGION_NAME":"海州区"},{"ID":8058,"PARENT_ID":8056,"REGION_NAME":"新邱区"},{"ID":8059,"PARENT_ID":8056,"REGION_NAME":"太平区"},{"ID":8060,"PARENT_ID":8056,"REGION_NAME":"清河门区"},{"ID":8061,"PARENT_ID":8056,"REGION_NAME":"细河区"},{"ID":8062,"PARENT_ID":8056,"REGION_NAME":"阜新蒙古族自治县"},{"ID":8063,"PARENT_ID":8056,"REGION_NAME":"彰武县"},{"ID":8064,"PARENT_ID":8056,"REGION_NAME":"其它区"}]},{"ID":8065,"PARENT_ID":7971,"REGION_NAME":"辽阳市","res":[{"ID":8066,"PARENT_ID":8065,"REGION_NAME":"白塔区"},{"ID":8067,"PARENT_ID":8065,"REGION_NAME":"文圣区"},{"ID":8068,"PARENT_ID":8065,"REGION_NAME":"宏伟区"},{"ID":8069,"PARENT_ID":8065,"REGION_NAME":"弓长岭区"},{"ID":8070,"PARENT_ID":8065,"REGION_NAME":"太子河区"},{"ID":8071,"PARENT_ID":8065,"REGION_NAME":"辽阳县"},{"ID":8072,"PARENT_ID":8065,"REGION_NAME":"灯塔市"},{"ID":8073,"PARENT_ID":8065,"REGION_NAME":"其它区"}]},{"ID":8074,"PARENT_ID":7971,"REGION_NAME":"盘锦市","res":[{"ID":8075,"PARENT_ID":8074,"REGION_NAME":"双台子区"},{"ID":8076,"PARENT_ID":8074,"REGION_NAME":"兴隆台区"},{"ID":8077,"PARENT_ID":8074,"REGION_NAME":"大洼县"},{"ID":8078,"PARENT_ID":8074,"REGION_NAME":"盘山县"},{"ID":8079,"PARENT_ID":8074,"REGION_NAME":"其它区"}]},{"ID":8080,"PARENT_ID":7971,"REGION_NAME":"铁岭市","res":[{"ID":8081,"PARENT_ID":8080,"REGION_NAME":"银州区"},{"ID":8082,"PARENT_ID":8080,"REGION_NAME":"清河区"},{"ID":8083,"PARENT_ID":8080,"REGION_NAME":"铁岭县"},{"ID":8084,"PARENT_ID":8080,"REGION_NAME":"西丰县"},{"ID":8085,"PARENT_ID":8080,"REGION_NAME":"昌图县"},{"ID":8086,"PARENT_ID":8080,"REGION_NAME":"调兵山市"},{"ID":8087,"PARENT_ID":8080,"REGION_NAME":"开原市"},{"ID":8088,"PARENT_ID":8080,"REGION_NAME":"其它区"}]},{"ID":8089,"PARENT_ID":7971,"REGION_NAME":"朝阳市","res":[{"ID":8090,"PARENT_ID":8089,"REGION_NAME":"双塔区"},{"ID":8091,"PARENT_ID":8089,"REGION_NAME":"龙城区"},{"ID":8092,"PARENT_ID":8089,"REGION_NAME":"朝阳县"},{"ID":8093,"PARENT_ID":8089,"REGION_NAME":"建平县"},{"ID":8094,"PARENT_ID":8089,"REGION_NAME":"喀喇沁左翼蒙古族自治县"},{"ID":8095,"PARENT_ID":8089,"REGION_NAME":"北票市"},{"ID":8096,"PARENT_ID":8089,"REGION_NAME":"凌源市"},{"ID":8097,"PARENT_ID":8089,"REGION_NAME":"其它区"}]},{"ID":8098,"PARENT_ID":7971,"REGION_NAME":"葫芦岛市","res":[{"ID":8099,"PARENT_ID":8098,"REGION_NAME":"连山区"},{"ID":8100,"PARENT_ID":8098,"REGION_NAME":"龙港区"},{"ID":8101,"PARENT_ID":8098,"REGION_NAME":"南票区"},{"ID":8102,"PARENT_ID":8098,"REGION_NAME":"绥中县"},{"ID":8103,"PARENT_ID":8098,"REGION_NAME":"建昌县"},{"ID":8104,"PARENT_ID":8098,"REGION_NAME":"兴城市"},{"ID":8105,"PARENT_ID":8098,"REGION_NAME":"其它区"}]}]
 */
 
 private int ID;
 private int PARENT_ID;
 private String REGION_NAME;
 private List<CityBean> city;
 
 public int getID() {
 return ID;
 }
 
 public void setID(int ID) {
 this.ID = ID;
 }
 
 public int getPARENT_ID() {
 return PARENT_ID;
 }
 
 public void setPARENT_ID(int PARENT_ID) {
 this.PARENT_ID = PARENT_ID;
 }
 
 public String getREGION_NAME() {
 return REGION_NAME;
 }
 
 public void setREGION_NAME(String REGION_NAME) {
 this.REGION_NAME = REGION_NAME;
 }
 
 public List<CityBean> getCity() {
 return city;
 }
 
 public void setCity(List<CityBean> city) {
 this.city = city;
 }
 
 @Override
 public String getPickerViewText() {
 return this.REGION_NAME;
 }
 
 public static class CityBean {
 /**
  * ID : 7972
  * PARENT_ID : 7971
  * REGION_NAME : 沈阳市
  * res : [{"ID":7973,"PARENT_ID":7972,"REGION_NAME":"和平区"},{"ID":7974,"PARENT_ID":7972,"REGION_NAME":"沈河区"},{"ID":7975,"PARENT_ID":7972,"REGION_NAME":"大东区"},{"ID":7976,"PARENT_ID":7972,"REGION_NAME":"皇姑区"},{"ID":7977,"PARENT_ID":7972,"REGION_NAME":"铁西区"},{"ID":7978,"PARENT_ID":7972,"REGION_NAME":"苏家屯区"},{"ID":7979,"PARENT_ID":7972,"REGION_NAME":"东陵区"},{"ID":7980,"PARENT_ID":7972,"REGION_NAME":"新城子区"},{"ID":7981,"PARENT_ID":7972,"REGION_NAME":"于洪区"},{"ID":7982,"PARENT_ID":7972,"REGION_NAME":"辽中县"},{"ID":7983,"PARENT_ID":7972,"REGION_NAME":"康平县"},{"ID":7984,"PARENT_ID":7972,"REGION_NAME":"法库县"},{"ID":7985,"PARENT_ID":7972,"REGION_NAME":"新民市"},{"ID":7986,"PARENT_ID":7972,"REGION_NAME":"浑南新区"},{"ID":7987,"PARENT_ID":7972,"REGION_NAME":"张士开发区"},{"ID":7988,"PARENT_ID":7972,"REGION_NAME":"沈北新区"},{"ID":7989,"PARENT_ID":7972,"REGION_NAME":"其它区"}]
  */
 
 private int ID;
 private int PARENT_ID;
 private String REGION_NAME;
 private List<ResBean> res;
 
 public int getID() {
  return ID;
 }
 
 public void setID(int ID) {
  this.ID = ID;
 }
 
 public int getPARENT_ID() {
  return PARENT_ID;
 }
 
 public void setPARENT_ID(int PARENT_ID) {
  this.PARENT_ID = PARENT_ID;
 }
 
 public String getREGION_NAME() {
  return REGION_NAME;
 }
 
 public void setREGION_NAME(String REGION_NAME) {
  this.REGION_NAME = REGION_NAME;
 }
 
 public List<ResBean> getRes() {
  return res;
 }
 
 public void setRes(List<ResBean> res) {
  this.res = res;
 }
 
 public static class ResBean {
  /**
  * ID : 7973
  * PARENT_ID : 7972
  * REGION_NAME : 和平区
  */
 
  private int ID;
  private int PARENT_ID;
  private String REGION_NAME;
 
  public int getID() {
  return ID;
  }
 
  public void setID(int ID) {
  this.ID = ID;
  }
 
  public int getPARENT_ID() {
  return PARENT_ID;
  }
 
  public void setPARENT_ID(int PARENT_ID) {
  this.PARENT_ID = PARENT_ID;
  }
 
  public String getREGION_NAME() {
  return REGION_NAME;
  }
 
  public void setREGION_NAME(String REGION_NAME) {
  this.REGION_NAME = REGION_NAME;
  }
 }
 }
}

5.主页调用，城市json数据很多解析耗时，进入页面会非常的慢，所以在子线程调用。有的地址没有第三级trycach，有就取没有就去二级

复制代码

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import com.bigkoo.pickerview.builder.OptionsPickerBuilder;
import com.bigkoo.pickerview.view.OptionsPickerView;
 
import java.util.ArrayList;
 
 
public class MainActivity extends AppCompatActivity {
 private TextView tvAddress;
 private OptionsPickerView pvOptions;
 private LevelsListDate levelsListDate;
 private ArrayList<JsonBean> jsonBeans;
 private ArrayList<ArrayList<String>> arrayLists;
 private ArrayList<ArrayList<ArrayList<String>>> arrayLists1;
 private Handler handler1 = new Handler() {
 @Override
 public void handleMessage(Message msg) {
  super.handleMessage(msg);
  try {
  showHyPickerView();
  } catch (Exception e) {
  e.printStackTrace();
  }
 }
 };
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 tvAddress = findViewById(R.id.tvAddress);
 tvAddress.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  if (pvOptions != null) {
   pvOptions.show();
  }
  }
 });
 new Thread(new Runnable() {
  @Override
  public void run() {
  try {
   levelsListDate = new LevelsListDate(MainActivity.this);
   jsonBeans = levelsListDate.initJsonData("citys_data.json");
   arrayLists = levelsListDate.initJsonData1("citys_data.json");
   arrayLists1 = levelsListDate.initJsonData2("citys_data.json");
   handler1.sendEmptyMessage(1);
  } catch (Exception e) {
   e.printStackTrace();
  }
  }
 }).start();
 }
 
 /**
 * 初始化城市选择器
 */
 private void showHyPickerView() {
 //条件选择器
 pvOptions = new OptionsPickerBuilder(MainActivity.this, new com.bigkoo.pickerview.listener.OnOptionsSelectListener() {
  @Override
  public void onOptionsSelect(int options1, int options2, int options3, View v) {
  try {
   // cityId = jsonBeans.get(options1).getCity().get(options2).getRes().get(options3).getID() + "";
   tvAddress.setText(jsonBeans.get(options1).getCity().get(options2).getRes().get(options3).getREGION_NAME());
  } catch (Exception e) {
   // cityId = jsonBeans.get(options1).getCity().get(options2).getID() + "";
   tvAddress.setText(jsonBeans.get(options1).getCity().get(options2).getREGION_NAME());
  }
  }
 }).build();
 pvOptions.setPicker(jsonBeans, arrayLists, arrayLists1);
 }
}

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import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import com.bigkoo.pickerview.builder.OptionsPickerBuilder;
import com.bigkoo.pickerview.view.OptionsPickerView;
 
import java.util.ArrayList;
 
 
public class MainActivity extends AppCompatActivity {
 private TextView tvAddress;
 private OptionsPickerView pvOptions;
 private LevelsListDate levelsListDate;
 private ArrayList<JsonBean> jsonBeans;
 private ArrayList<ArrayList<String>> arrayLists;
 private ArrayList<ArrayList<ArrayList<String>>> arrayLists1;
 private Handler handler1 = new Handler() {
 @Override
 public void handleMessage(Message msg) {
  super.handleMessage(msg);
  try {
  showHyPickerView();
  } catch (Exception e) {
  e.printStackTrace();
  }
 }
 };
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 tvAddress = findViewById(R.id.tvAddress);
 tvAddress.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  if (pvOptions != null) {
   pvOptions.show();
  }
  }
 });
 new Thread(new Runnable() {
  @Override
  public void run() {
  try {
   levelsListDate = new LevelsListDate(MainActivity.this);
   jsonBeans = levelsListDate.initJsonData("citys_data.json");
   arrayLists = levelsListDate.initJsonData1("citys_data.json");
   arrayLists1 = levelsListDate.initJsonData2("citys_data.json");
   handler1.sendEmptyMessage(1);
  } catch (Exception e) {
   e.printStackTrace();
  }
  }
 }).start();
 }
 
 /**
 * 初始化城市选择器
 */
 private void showHyPickerView() {
 //条件选择器
 pvOptions = new OptionsPickerBuilder(MainActivity.this, new com.bigkoo.pickerview.listener.OnOptionsSelectListener() {
  @Override
  public void onOptionsSelect(int options1, int options2, int options3, View v) {
  try {
   // cityId = jsonBeans.get(options1).getCity().get(options2).getRes().get(options3).getID() + "";
   tvAddress.setText(jsonBeans.get(options1).getCity().get(options2).getRes().get(options3).getREGION_NAME());
  } catch (Exception e) {
   // cityId = jsonBeans.get(options1).getCity().get(options2).getID() + "";
   tvAddress.setText(jsonBeans.get(options1).getCity().get(options2).getREGION_NAME());
  }
  }
 }).build();
 pvOptions.setPicker(jsonBeans, arrayLists, arrayLists1);
 }
}