Android-省市县地址选择

使用开源组件，基于公开的省市县数据源+本地化，以 http 接口形式供 App 调用。本地化是因为有些区县数据还未纳入正式版中，但又要满足客户需求

开源组件：AndroidPicker: 安卓选择器类库，包括日期及时间选择器（可用于出生日期、营业时间等）、单项选择器（可用于性别、民族、职业、学历、星座等）、二三级联动选择器（可用于车牌号、基金定投日期等）、城市地址选择器（分省级、地市级及区县级）、数字选择器（可用于年龄、身高、体重、温度等）、日历选日期择器（可用于酒店及机票预定日期）、颜色选择器、文件及目录选择器、图片选择器等…… (gitee.com)

步骤

app/build.gradle

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implementation 'com.squareup.okhttp3:okhttp:3.3.1'
implementation 'com.github.gzu-liyujiang.AndroidPicker:WheelPicker:4.0.1'
implementation 'com.github.gzu-liyujiang.AndroidPicker:AddressPicker:4.0.1'

CityUtil.java

package com.example.demo;

import android.os.Handler;
import android.os.Looper;
import android.text.TextUtils;

import com.github.gzuliyujiang.wheelpicker.AddressPicker;
import com.github.gzuliyujiang.wheelpicker.contract.AddressParser;
import com.github.gzuliyujiang.wheelpicker.contract.OnLinkageSelectedListener;
import com.github.gzuliyujiang.wheelpicker.entity.ProvinceEntity;
import com.github.gzuliyujiang.wheelpicker.utility.AddressJsonParser;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;

import okhttp3.OkHttpClient;
import okhttp3.Request;

public class CityUtil {
    public static final String SERVER_URL = "http://192.168.0.197:8080/gms-web/citys/allData.do";
    private static List<ProvinceEntity> provinceEntityList = null;
    public static void init(AddressPicker picker) {
        if(provinceEntityList == null) {
            Executors.newSingleThreadExecutor().execute(new Runnable() {
                @Override
                public void run() {
                    OkHttpClient client = new OkHttpClient();
                    Request request = new Request.Builder().url(SERVER_URL).build();
                    okhttp3.Response response = null;
                    try {
                        response = client.newCall(request).execute();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    String text = null;
                    try {
                        text = response.body().string();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    if (TextUtils.isEmpty(text)) {
                        provinceEntityList = new ArrayList<>();
                    } else {
                        AddressParser parser = new AddressJsonParser.Builder()
                                .provinceCodeField("code")
                                .provinceNameField("name")
                                .provinceChildField("children")
                                .cityCodeField("code")
                                .cityNameField("name")
                                .cityChildField("children")
                                .countyCodeField("code")
                                .countyNameField("name")
                                .build();
                        provinceEntityList = parser.parseData(text);
                    }
                    new Handler(Looper.getMainLooper()).post(new Runnable() {
                        @Override
                        public void run() {
                            picker.onAddressReceived(provinceEntityList);
                            updateTitle(picker);
                        }
                    });
                }
            });
        } else {
            picker.onAddressReceived(provinceEntityList);
            updateTitle(picker);
        }
    }

    private static void updateTitle(AddressPicker picker) {
        picker.getWheelLayout().setOnLinkageSelectedListener(new OnLinkageSelectedListener() {
            @Override
            public void onLinkageSelected(Object first, Object second, Object third) {
                picker.getTitleView().setText(String.format("%s%s%s",
                        picker.getFirstWheelView().formatItem(first),
                        picker.getSecondWheelView().formatItem(second),
                        picker.getThirdWheelView().formatItem(third)));
            }
        });
    }
}

MainActivity.java

package com.example.demo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.github.gzuliyujiang.wheelpicker.AddressPicker;
import com.github.gzuliyujiang.wheelpicker.contract.AddressParser;
import com.github.gzuliyujiang.wheelpicker.contract.OnAddressPickedListener;
import com.github.gzuliyujiang.wheelpicker.contract.OnLinkageSelectedListener;
import com.github.gzuliyujiang.wheelpicker.entity.CityEntity;
import com.github.gzuliyujiang.wheelpicker.entity.CountyEntity;
import com.github.gzuliyujiang.wheelpicker.entity.ProvinceEntity;
import com.github.gzuliyujiang.wheelpicker.utility.AddressJsonParser;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;

import okhttp3.OkHttpClient;
import okhttp3.Request;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView address_view = findViewById(R.id.address);

        Button chooseAddress = findViewById(R.id.chooseAddress);
        chooseAddress.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showAddressPicker(address_view);
            }
        });
    }


    private void showAddressPicker(TextView textView) {
        AddressPicker picker = new AddressPicker(this);
        CityUtil.init(picker);

        //默认显示
        picker.setDefaultValue("湖北省", "荆州市", "开发区");
        picker.setOnAddressPickedListener(new OnAddressPickedListener() {
            @Override
            public void onAddressPicked(ProvinceEntity province, CityEntity city, CountyEntity county) {
                //区县编码
                String code = county.getCode();

                //省市县名称
                String name = province.getName() + city.getName() + county.getName();

                textView.setText(code);
                Toast.makeText(MainActivity.this, name, Toast.LENGTH_SHORT).show();
            }
        });
        picker.show();
    }
}