<?xml version="1.0" encoding="UTF-8"?>
<!--
START_DOCUMET:第一个节点 END_DOCUMET:尾节点 START_TAG:其他的首部的节点 p pn c cn...
END_TAG:其他的尾部的节点 </p> </c> ...
-->
<citylist>
<p p_id="01">
<pn>北京</pn>
<c c_id="0101">
<cn>北京</cn>
<d d_id="101010101">北京</d>
<d d_id="101010200">海淀</d>
<d d_id="101010300">朝阳</d>
<d d_id="101010400">顺义</d>
<d d_id="101010500">怀柔</d>
<d d_id="101010600">通州</d>
<d d_id="101010700">昌平</d>
<d d_id="101010800">延庆</d>
<d d_id="101010900">丰台</d>
<d d_id="101011000">石景山</d>
<d d_id="101011100">大兴</d>
<d d_id="101011200">房山</d>
<d d_id="101011300">密云</d>
<d d_id="101011400">门头沟</d>
<d d_id="101011500">平谷</d>
</c>
</p>xml文件只选取了部分，完整文件包括中国的所有省市地区。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Spinner
android:id="@+id/spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Spinner
android:id="@+id/spinner02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/spinner01"
/>
<Spinner
android:id="@+id/spinner03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/spinner02"
/>
</RelativeLayout>
package com.example.sjliandong;
import java.util.ArrayList;
import java.util.List;
public class City {
private String id;
private String name;
private List<District> districts;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<District> getDistricts() {
return districts;
}
public void setDistricts(List<District> districts) {
this.districts = districts;
}
@Override
public String toString() {
return name;
}
}
package com.example.sjliandong;
public class District {
private String id;
private String name;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return name;
}
}
package com.example.sjliandong;
import java.util.*;
public class Provence {
private String id;
private String name;
private List<City> citys;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<City> getCitys() {
return citys;
}
public void setCitys(List<City> citys) {
this.citys = citys;
}
@Override
public String toString() {
return name;
}
}package com.example.sjliandong;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import android.os.Bundle;
import android.app.Activity;
import android.content.res.Resources;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
public class MainActivity extends Activity {
private List<Provence> provences;
private Provence provence;
ArrayAdapter<Provence> adapter01;
ArrayAdapter<City> adapter02;
ArrayAdapter<District> adapter03;
private Spinner spinner01, spinner02, spinner03;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spinner01 = (Spinner) findViewById(R.id.spinner01);
spinner02 = (Spinner) findViewById(R.id.spinner02);
spinner03 = (Spinner) findViewById(R.id.spinner03);
try {
provences = getProvinces();
} catch (XmlPullParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
adapter01 = new ArrayAdapter<Provence>(this,
android.R.layout.simple_list_item_1, provences);
spinner01.setAdapter(adapter01);
spinner01.setSelection(0, true);
adapter02 = new ArrayAdapter<City>(this,
android.R.layout.simple_list_item_1, provences.get(0)
.getCitys());
spinner02.setAdapter(adapter02);
spinner02.setSelection(0, true);
adapter03 = new ArrayAdapter<District>(this,
android.R.layout.simple_list_item_1, provences.get(0)
.getCitys().get(0).getDistricts());
spinner03.setAdapter(adapter03);
spinner03.setSelection(0, true);
spinner01.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
provence = provences.get(position);
adapter02 = new ArrayAdapter<City>(MainActivity.this,
android.R.layout.simple_list_item_1, provences.get(
position).getCitys());
spinner02.setAdapter(adapter02);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
spinner02.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
adapter03 = new ArrayAdapter<District>(MainActivity.this,
android.R.layout.simple_list_item_1, provence.getCitys().get(position)
.getDistricts());
spinner03.setAdapter(adapter03);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
});
}
public List<Provence> getProvinces() throws XmlPullParserException,
IOException {
List<Provence> provinces = null;
Provence province = null;
List<City> citys = null;
City city = null;
List<District> districts = null;
District district = null;
Resources resources = getResources();
InputStream in = resources.openRawResource(R.raw.citys_weather);
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser parser = factory.newPullParser();
parser.setInput(in, "utf-8");
int event = parser.getEventType();
while (event != XmlPullParser.END_DOCUMENT) {
switch (event) {
case XmlPullParser.START_DOCUMENT:
provinces = new ArrayList<Provence>();
break;
case XmlPullParser.START_TAG:
String tagName = parser.getName();
if ("p".equals(tagName)) {
province = new Provence();
citys = new ArrayList<City>();
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
String attrName = parser.getAttributeName(i);
String attrValue = parser.getAttributeValue(i);
if ("p_id".equals(attrName))
province.setId(attrValue);
}
}
if ("pn".equals(tagName)) {
province.setName(parser.nextText());
}
if ("c".equals(tagName)) {
city = new City();
districts = new ArrayList<District>();
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
String attrName = parser.getAttributeName(i);
String attrValue = parser.getAttributeValue(i);
if ("c_id".equals(attrName))
city.setId(attrValue);
}
}
if ("cn".equals(tagName)) {
city.setName(parser.nextText());
}
if ("d".equals(tagName)) {
district = new District();
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
String attrName = parser.getAttributeName(i);
String attrValue = parser.getAttributeValue(i);
if ("d_id".equals(attrName))
district.setId(attrValue);
}
district.setName(parser.nextText());
districts.add(district);
}
break;
case XmlPullParser.END_TAG:
if ("c".equals(parser.getName())) {
city.setDistricts(districts);
citys.add(city);
}
if ("p".equals(parser.getName())) {
province.setCitys(citys);
provinces.add(province);
}
break;
}
event = parser.next();
}
return provinces;
}
}
效果：
完整项目下载地址：github spinner小练习
原文地址：http://blog.csdn.net/a910626/article/details/45204143
