说明：此案例使用的是通过Sax方式解析xml文件这篇文章里的布局文件、City类和china.xml文件（此文件内包含两种格式），所以只需要完成MainActivity和PullXml就行了，在于展示如何使用Pull方式解析xml文件。

1. PullXml类的主要代码如下：

<span style="font-size:14px;">public class PullXml {
	public List<City> pullXml() {
		List<City> entities = null;
		City currentCity = null;
		// 创建XmlPullParser解析器对象
		XmlPullParser xmlPullParser = Xml.newPullParser();
		try {
			// 设置解析的文件输入流，并且指定输入流在操作的编码方式
			xmlPullParser.setInput(getClass().getClassLoader()
					.getResourceAsStream("china.xml"),"UTF-8");
			// 获取解析文件时返回的eventType
			int eventType = xmlPullParser.getEventType();
			while (eventType != XmlPullParser.END_DOCUMENT) {
				switch (eventType) {
				case XmlPullParser.START_DOCUMENT:
					Log.i(TAG,"---START_DOCUMENT---");
					entities = new ArrayList<>();
					break;

				case XmlPullParser.START_TAG:
					// 获取标签名
					String name = xmlPullParser.getName();
					if (name.equals("city")) {
						currentCity = new City();
						int count = xmlPullParser.getAttributeCount();
						if (count > 0) {
							// 根据属性赋值
							currentCity.setCityName(xmlPullParser
									.getAttributeValue(null,"cityname"));
							currentCity.setPyName(xmlPullParser
									.getAttributeValue(null,"pyName"));
							currentCity.setQuName(xmlPullParser
									.getAttributeValue(null,"quName"));
							currentCity.setState1(xmlPullParser
									.getAttributeValue(null,"state1"));
							currentCity.setState2(xmlPullParser
									.getAttributeValue(null,"state2"));
							currentCity.setStateDetailed(xmlPullParser
									.getAttributeValue(null,"stateDetailed"));
							currentCity.setTem1(xmlPullParser
									.getAttributeValue(null,"tem1"));
							currentCity.setTem2(xmlPullParser
									.getAttributeValue(null,"tem2"));
							currentCity.setWindState(xmlPullParser
									.getAttributeValue(null,"windState"));
						}

					} else if (currentCity != null) {
						if (name.equalsIgnoreCase("cityname")) {
							currentCity.setCityName(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("pyName")) {
							currentCity.setPyName(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("quName")) {
							currentCity.setQuName(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("state1")) {
							currentCity.setState1(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("state2")) {
							currentCity.setState2(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("stateDetailed")) {
							currentCity.setStateDetailed(xmlPullParser
									.nextText());
						} else if (name.equalsIgnoreCase("tem1")) {
							currentCity.setTem1(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("tem2")) {
							currentCity.setTem2(xmlPullParser.nextText());
						} else if (name.equalsIgnoreCase("windState")) {
							currentCity.setWindState(xmlPullParser.nextText());
						}
					}
					break;

				case XmlPullParser.END_TAG:
					// 在标签结束时添加到集合中
					if (xmlPullParser.getName().equalsIgnoreCase("city")
							&& currentCity != null) {
						entities.add(currentCity);
						currentCity = null;
					}
					break;
				}
				// 下一个
				eventType = xmlPullParser.next();
			}
		} catch (XmlPullParserException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return entities;
	}

}</span>

2. MainActivity的主要步骤是：获取控件对象，实现OnItemSelectedListener接口注册监听事件，获取字符串数组，设置控件的默认值，获取解析的xml文件等，主要代码如下：

@H_502_32@public class MainActivity extends Activity implements OnItemSelectedListener{ private Spinner sp_cities; private TextView tv_fengli; private String cities[]; private List<City> entities; private PullXml pullXml; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); sp_cities = (Spinner) findViewById(R.id.sp_cities); tv_fengli = (TextView) findViewById(R.id.tv_fengli); // 注册事件 sp_cities.setOnItemSelectedListener(this); // 获取字符串数组 cities = getResources().getStringArray(R.array.cities); pullXml = new PullXml(); // 设置控件的默认值 sp_cities.setSelection(2); // 获取解析的xml文件 entities = pullXml.pullXml(); } @Override public void onItemSelected(AdapterView<?> parent,View view,int position,long id) { for (City c : entities) { // 找到对应的city对象 if (c.getQuName().equals(cities[position])) { // 设置风力 tv_fengli.setText(c.getWindState()); break; } } } @Override public void onNothingSelected(AdapterView<?> parent) { } }3. 主要功能：