<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="horizontal"

    android:padding="8dp" >

    <Spinner

        android:id="@+id/spin_province"

        android:layout_width="80dp"

        android:layout_height="wrap_content" />

    <Spinner

        android:id="@+id/spin_city"

        android:layout_width="112dp"

        android:layout_height="wrap_content" />

    <Spinner

        android:id="@+id/spin_county"

        android:layout_width="100dp"

        android:layout_height="wrap_content" />

</LinearLayout>

package com.example.android.demo.spinner;

import android.os.Bundle;

import android.app.Activity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

public class MainActivity extends Activity

{

    private Spinner provinceSpinner = null;  //省级（省、直辖市）

    private Spinner citySpinner = null;     //地级市

    private Spinner countySpinner = null;    //县级（区、县、县级市）

    ArrayAdapter<String> provinceAdapter = null;  //省级适配器

    ArrayAdapter<String> cityAdapter = null;    //地级适配器

    ArrayAdapter<String> countyAdapter = null;    //县级适配器

    static int provincePosition = 3;

    //省级选项值

    private String[] province = new String[] {"北京","上海","天津","广东"};//,"重庆","黑龙江","江苏","山东","浙江","香港","澳门"};

    //地级选项值

    private String[][] city = new String[][]

            {

                    { "东城区", "西城区", "崇文区", "宣武区", "朝阳区", "海淀区", "丰台区", "石景山区", "门头沟区",

                            "房山区", "通州区", "顺义区", "大兴区", "昌平区", "平谷区", "怀柔区", "密云县",

                            "延庆县" },

                    { "长宁区", "静安区", "普陀区", "闸北区", "虹口区" },

                    { "和平区", "河东区", "河西区", "南开区", "河北区", "红桥区", "塘沽区", "汉沽区", "大港区",

                            "东丽区" },

                    { "广州", "深圳", "韶关" // ,"珠海","汕头","佛山","湛江","肇庆","江门","茂名","惠州","梅州",

                    // "汕尾","河源","阳江","清远","东莞","中山","潮州","揭阳","云浮"

                    }

            };

    //县级选项值

    private String[][][] county = new String[][][]

            {

                    {   //北京

                        {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},

                        {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"}

                    },

                    {    //上海

                        {"无"},{"无"},{"无"},{"无"},{"无"}

                    },

                    {    //天津

                        {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"}

                    },

                    {    //广东

                        {"海珠区","荔湾区","越秀区","白云区","萝岗区","天河区","黄埔区","花都区","从化市","增城市","番禺区","南沙区"}, //广州

                        {"宝安区","福田区","龙岗区","罗湖区","南山区","盐田区"}, //深圳

                        {"武江区","浈江区","曲江区","乐昌市","南雄市","始兴县","仁化县","翁源县","新丰县","乳源县"}  //韶关

                    }

            };

    @Override

    protected void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        setSpinner();

    }

    /*

     * 设置下拉框

     */

    private void setSpinner()

    {

        provinceSpinner = (Spinner)findViewById(R.id.spin_province);

        citySpinner = (Spinner)findViewById(R.id.spin_city);

        countySpinner = (Spinner)findViewById(R.id.spin_county);

        //绑定适配器和值

        provinceAdapter = new ArrayAdapter<String>(MainActivity.this,

                android.R.layout.simple_spinner_item, province);

        provinceSpinner.setAdapter(provinceAdapter);

        provinceSpinner.setSelection(3,true);  //设置默认选中项，此处为默认选中第4个值

        cityAdapter = new ArrayAdapter<String>(MainActivity.this,

                android.R.layout.simple_spinner_item, city[3]);

        citySpinner.setAdapter(cityAdapter);

        citySpinner.setSelection(0,true);  //默认选中第0个

        countyAdapter = new ArrayAdapter<String>(MainActivity.this,

                android.R.layout.simple_spinner_item, county[3][0]);

        countySpinner.setAdapter(countyAdapter);

        countySpinner.setSelection(0, true);

        //省级下拉框监听

        provinceSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()

        {

            // 表示选项被改变的时候触发此方法，主要实现办法：动态改变地级适配器的绑定值

            @Override

            public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long arg3)

            {

                //position为当前省级选中的值的序号

                //将地级适配器的值改变为city[position]中的值

                cityAdapter = new ArrayAdapter<String>(

                        MainActivity.this, android.R.layout.simple_spinner_item, city[position]);

                // 设置二级下拉列表的选项内容适配器

                citySpinner.setAdapter(cityAdapter);

                provincePosition = position;    //记录当前省级序号，留给下面修改县级适配器时用

            }

            @Override

            public void onNothingSelected(AdapterView<?> arg0)

            {

            }

        });

        //地级下拉监听

        citySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()

        {

            @Override

            public void onItemSelected(AdapterView<?> arg0, View arg1,

                    int position, long arg3)

            {

                countyAdapter = new ArrayAdapter<String>(MainActivity.this,

                        android.R.layout.simple_spinner_item, county[provincePosition][position]);

                countySpinner.setAdapter(countyAdapter);

            }

            @Override

            public void onNothingSelected(AdapterView<?> arg0)

            {

            }

        });

    }

}