利用pull方式进行xml文件查看天气

来源：互联网发布：java 时间控件编辑：程序博客网时间：2024/06/08 23:53

1.需要使用到的java文件

解析china.xml文件中的内容。

利用pull方式进行xml文件步骤：

①直接创建出XmlPullParser解析器对象 XmlPullParser xmlPullParser = Xml.newPullParser();

②设置解析的文件输入流并且制定输入流在操作方式中的编码方式 xmlPullParser.setInput(getClass().getClassLoader().getResourceAsStream("china.xml"), "UTF-8");

③获取解析文件时返回的EventType

④利用XmlPullParser中自带的START_DOCUMENT、END_DOCUMENT、START_TAG、END_TAG定值进行判断和赋值

注意：获取标签及标签中的对象在START_TAG方法中进行，而在END_TAG中即标签结束后将当前属性添加到集合中。

2.xml文件的格式有两种：

1）第一种如下：

<city        cityname="南京"             pyName="jiangsu"        quName="江苏"        state1="1"        state2="1"        stateDetailed="多云"        tem1="24"        tem2="19"        windState="西北风3-4级" />    <city        cityname="北京"             pyName="beijing"        quName="北京"        state1="1"        state2="1"        stateDetailed="多云"        tem1="24"        tem2="14"        windState="西北风4-5级" />

2）第二种如下：

<city>        <cityname>长沙</cityname>        <pyName>hunan</pyName>        <quName>湖南</quName>        <state1>1</state1>        <state2>1</state2>        <stateDetailed>晴</stateDetailed>        <tem1>23</tem1>        <tem2>34</tem2>        <windState>东南风2-3级</windState>    </city>

3.第一种xml格式的进行解析时使用如下方式：

String name = xmlPullParser.getName();if (name.equals("city")) {// 声明当前的city对象currentCity = new City();

int count = xmlPullParser.getAttributeCount();

// System.out.println("个数：：：：："+count);if (count > 0) {// 给当前的city对象赋值

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.setStateDetailed(xmlPullParser.getAttributeValue(null, "stateDetailed"));currentCity.setTem1(xmlPullParser.getAttributeValue(null, "tem1"));currentCity.setTem2(xmlPullParser.getAttributeValue(null, "tem2"));currentCity.setWindState(xmlPullParser.getAttributeValue(null, "windState"));}}

4.第二种xml格式的进行解析时使用如下方式：

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("state1")) {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());}

5.利用pull方式解析xml文件查看天气界面的搭建和DOM方式还有SAX方式是一样的，查看的方式也几乎相似，参照：

http://blog.csdn.net/xia09222826/article/details/28434189或者http://blog.csdn.net/xia09222826/article/details/28383941

说明：界面搭建时，可以使用RadioGroup（按钮群）或者spinner插件进行城市的选择。

按钮的方式结果如图：

利用pull方式进行xml文件相关的代码：

package www.csdn.net.xml;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import android.util.Log;import android.util.Xml;import domain.City;public class PullXml {private static final String TAG = "PullXml";public List<City> pullXml() {List<City> entities = null;City currentCity = null;// 直接创建出XmlPullParser解析器对象XmlPullParser xmlPullParser = Xml.newPullParser();try {// 设置解析的文件输入流 并且制定输入流在操作方式中的编码方式xmlPullParser.setInput(getClass().getClassLoader().getResourceAsStream("china.xml"), "UTF-8");// 获取解析文件时返回的EventTypeint eventType = xmlPullParser.getEventType();while (eventType != XmlPullParser.END_DOCUMENT) {switch (eventType) {case XmlPullParser.START_DOCUMENT:entities = new ArrayList<>();Log.i(TAG, "----startdocument-----");break;case XmlPullParser.START_TAG:// 获取标签名String name = xmlPullParser.getName();if (name.equals("city")) {// 声明当前的city对象currentCity = new City();int count = xmlPullParser.getAttributeCount();// System.out.println("个数：：：：："+count);if (count > 0) {// 给当前的city对象赋值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.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("state1")) {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());}}//Log.i(TAG, "----starttag-----" + name);break;case XmlPullParser.END_TAG://String name2 = xmlPullParser.getName();//标签结束时添加到集合中if (xmlPullParser.getName().equalsIgnoreCase("city")&& currentCity != null) {// 将当前属性添加到集合中entities.add(currentCity);currentCity= null;}//Log.i(TAG, "----endtag-----" + name2);break;}eventType = xmlPullParser.next();}} catch (XmlPullParserException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return entities;}}

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