<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/activity_main"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context="com.example.testspinnerprovince.MainActivity"
  android:orientation="vertical">

  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textSize="20sp"
    android:text="@string/selection"
    android:padding="6dp"/>
  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="30dp"
    android:orientation="horizontal">

    <Spinner
      android:id="@+id/provinceSpinner"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"/>
    <Spinner
      android:id="@+id/citySpinner"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"/>
    <Spinner
      android:id="@+id/countySpinner"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"/>

  </LinearLayout>
  <TextView
    android:id="@+id/show"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="20sp"
    android:padding="6dp"
    android:layout_marginTop="80dp"
    android:text="@string/selected"/>

</LinearLayout>

public class MainActivity extends AppCompatActivity {
  private TextView show;
  private Spinner provinceSpinner;//省級
  private Spinner citySpinner;//市級
  private Spinner countySpinner;//區(qū)級

  private String[] province = new String[]{"北京","上海","天津","廣東"};
  private String[][] city = new String[][]{
      {"東城區(qū)","西城區(qū)","崇文區(qū)","宣武區(qū)","朝陽區(qū)","海淀區(qū)","豐臺區(qū)","石景山區(qū)","門頭溝區(qū)",
          "房山區(qū)","通州區(qū)","順義區(qū)","大興區(qū)","昌平區(qū)","平谷區(qū)","懷柔區(qū)","密云縣","延慶縣"},
  {"長寧區(qū)","靜安區(qū)","普陀區(qū)","閘北區(qū)","虹口區(qū)"},
  {"和平區(qū)","河?xùn)|區(qū)","河西區(qū)","南開區(qū)","河北區(qū)","紅橋區(qū)","塘沽區(qū)","漢沽區(qū)","大港區(qū)","東麗區(qū)"},
  {"廣州","深圳","韶關(guān)"}};
  private String[][][] county = new String[][][]{{
      //北京
      {"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},
      {"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},},{
      //上海
      {"無"},{"無"},{"無"},{"無"},{"無"},},{
      //天津
      {"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},{"無"},},{
      //廣東
      {"海珠區(qū)","荔灣區(qū)","越秀區(qū)","白云區(qū)","蘿崗區(qū)","天河區(qū)","黃浦區(qū)","花都區(qū)","從化市","增城市"
          ,"番禺區(qū)","南沙區(qū)"},
      {"寶安區(qū)","福田區(qū)","龍崗區(qū)","羅湖區(qū)","南山區(qū)","鹽田區(qū)"},
      {"武江區(qū)","湞江區(qū)","曲江區(qū)","樂昌市","南雄市","始興縣","仁化縣","翁源縣","新豐縣","乳源縣"}
  }
  };

  //Spinner想要填充肯定需要適配器
  private ArrayAdapter<String> provinceAdapter;
  private ArrayAdapter<String> cityAdapter;
  private ArrayAdapter<String> countyAdapter;
  private int provicePosition;//省級選中索引
  private int cityPosition;//市級選中索引

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initViews();//初始化
  }


  //控件初始化
  private void initViews() {
    provinceSpinner = (Spinner) findViewById(R.id.provinceSpinner);
    citySpinner = (Spinner) findViewById(R.id.citySpinner);
    countySpinner = (Spinner) findViewById(R.id.countySpinner);
    show = (TextView) findViewById(R.id.show);

    //初始化適配器及顯示的內(nèi)容
    provinceAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,province);
    provinceSpinner.setAdapter(provinceAdapter);


    //對省級下拉實(shí)現(xiàn)監(jiān)聽，市級下拉需要根據(jù)不同的省級顯示不同內(nèi)容。
    provinceSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        //需要在item選中省級的時(shí)候，動(dòng)態(tài)的改變市級對應(yīng)的顯示
        cityAdapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_spinner_item,city[position]);
        //設(shè)置二級下拉列表當(dāng)中選項(xiàng)內(nèi)容適配器
        citySpinner.setAdapter(cityAdapter);
        //記錄當(dāng)前的省級索引位置，留給下面修改縣級進(jìn)行適配使用
        provicePosition = position;
      }

      @Override
      public void onNothingSelected(AdapterView<?> parent) {

      }
    });


    //市級下拉監(jiān)聽
    citySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        //需要在item選中市級的時(shí)候，動(dòng)態(tài)的改變縣級對應(yīng)的顯示
        countyAdapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_spinner_item,county[provicePosition][position]);//首先確定是哪個(gè)省的。
        //設(shè)置二級下拉列表當(dāng)中選項(xiàng)內(nèi)容適配器
        countySpinner.setAdapter(countyAdapter);
        show.setText("選中的城市為:"+ province[provicePosition] + city[provicePosition][position]);
        cityPosition = position;
      }

      @Override
      public void onNothingSelected(AdapterView<?> parent) {

      }
    });


    //區(qū)級的下拉
    countySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        show.setText("選中的城市為:"+ province[provicePosition] + city[provicePosition][cityPosition]
            + county[provicePosition][cityPosition][position]);
      }

      @Override
      public void onNothingSelected(AdapterView<?> parent) {

      }
    });
  }


}