Android仿苹果实现省市区三级联动选择

效果图：

  一、添加依赖

dependencies {
    ·····
    implementation 'liji.library.dev:citypickerview:0.7.0'
}

二、这里就不在介绍布局文件了，直接演示实现代码：

package com.example.weicy.myapplication;

import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;
import com.lljjcoder.citypickerview.widget.CityPicker;

public class MainActivity extends AppCompatActivity {
    private TextView mSubmitTv;
    private TextView new_address_area;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSubmitTv = (TextView) findViewById(R.id.submit_tv);
        new_address_area = (TextView) findViewById(R.id.new_address_area);
        mSubmitTv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //判断输入法的隐藏状态
                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                if (imm.isActive()) {
                    imm.hideSoftInputFromWindow(v.getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
                    selectAddress();//调用CityPicker选取区域
                }
            }
        });
    }

    private void selectAddress() {
        CityPicker cityPicker = new CityPicker.Builder(MainActivity.this)
                .textSize(14)
                .title("地址选择")
                .titleBackgroundColor("#FFFFFF")
                .confirTextColor("#696969")
                .cancelTextColor("#696969")
                .province("江苏省")
                .city("常州市")
                .district("天宁区")
                .textColor(Color.parseColor("#000000"))
                .provinceCyclic(true)
                .cityCyclic(false)
                .districtCyclic(false)
                .visibleItemsCount(7)
                .itemPadding(10)
                .onlyShowProvinceAndCity(false)
                .build();
        cityPicker.show();
        //监听方法，获取选择结果
        cityPicker.setOnCityItemClickListener(new CityPicker.OnCityItemClickListener() {
            @Override
            public void onSelected(String... citySelected) {
                //省份
                String province = citySelected[0];
                //城市
                String city = citySelected[1];
                //区县（如果设定了两级联动，那么该项返回空）
                String district = citySelected[2];
                //邮编
                String code = citySelected[3];
                //为TextView赋值
                new_address_area.setText(province.trim() + "-" + city.trim() + "-" + district.trim());
            }
        });
    }
}