思路I ：通过二维数据放我们需要的城市地区 ，第一个spinner加载第一级城市，监听第一级城市去控制第二个spinner加载二级城市。
demo下载地址
代码如下：
MainActivity
package com.example.testdiqu;import java.util.ArrayList;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Spinner;import android.widget.AdapterView.OnItemSelectedListener;public class MainActivity extends ActionBarActivity {private Spinner parent,chaird;private ArrayList<String> list=new ArrayList<String>();//城市private ArrayList<String> clist=new ArrayList<String>();//子城市private String [][] citys=new String[][]{{"济南市","历下区","市中区","槐荫区","天桥区","历城区","长清区","平阴县","济阳县","商河县","章丘市"},{"青岛市","市南区","市北区","四方区","黄岛区","崂山区","李沧区","城阳区","胶州市","即墨市","平度市","胶南市","莱西市"},{"淄博市","淄川区","张店区","博山区","临淄区","周村区","桓台县","高青县","沂源县"},{"枣庄市","薛城区","峄城区","台儿庄区","山亭区","滕州市"},{"东营市","东营区","河口区","垦利县","利津县","广饶县"},{"潍坊市","潍城区","寒亭区","坊子区","奎文区","临朐县","昌乐县","青州市","诸城市","寿光市","安丘市","高密市","昌邑市"},{"烟台市","芝罘区","福山区","牟平区","莱山区","长岛县","龙口市","莱阳市","莱州市","蓬莱市","招远市","栖霞市","海阳市"},{"威海市","环翠区","文登市","荣成市","乳山市"},{"济宁市","任城区","微山县","鱼台县","金乡县","嘉祥县","汶上县","泗水县","梁山县","曲阜市","兖州市","邹城市"},{"泰安市","泰山区","岱岳区","宁阳县","东平县","新泰市","肥城市"},{"日照市","东港区","岚山区","五莲县","莒县"},{"莱芜市","莱城区","钢城区"},{"临沂市","兰山区","罗庄区","沂南县","郯城县","沂水县","苍山县","费县","平邑县"},{"德州市","德城区","宁津县","庆云县","临邑县","齐河县","平原县","夏津县","武城县","乐陵市","禹城市","莒南县","蒙阴县","临沭县"},{"聊城市","东昌府区","阳谷县","莘县","茌平县","东阿县","冠县","高唐县","临清市"},{"滨州市","滨城区","惠民县","阳信县","无棣县","沾化县","博兴县","邹平县"},{"菏泽市","牡丹区","曹县","单县","巨野县","定陶县","成武县","郓城县","鄄城县","东明县"}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);parent=(Spinner)findViewById(R.id.parent);chaird=(Spinner)findViewById(R.id.chaird);loadData();}private void loadData() {// TODO Auto-generated method stubfor(int i=0;i<citys.length;i++){list.add(citys[i][0]);Log.i("test2",citys[i].length+"" );}//主城市ArrayAdapter<String> adapter=new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, list);adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);parent.setAdapter(adapter);parent.setOnItemSelectedListener(new OnItemSelectedListener() {@Overridepublic void onItemSelected(AdapterView<?> parent, View view,int position, long id) {// TODO Auto-generated method stubclist.clear();//清除数据for(int j=1;j<citys[position].length;j++){clist.add(citys[position][j]);}//次城市ArrayAdapter<String> adapter=new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, clist);adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);chaird.setAdapter(adapter);}@Overridepublic void onNothingSelected(AdapterView<?> parent) {// TODO Auto-generated method stub}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}}main_activity.xml
但我们好多人没想过，勇敢的冷静的理智的去接受失败，
