Android下解析XML

channel.java

package com.itheima.xmpparser;public class Channel {	PRivate String id;	private String city;	private String temp;	private String wind;	private String pm250;	public String getId() {		return id;	}	public void setId(String id) {		this.id = id;	}	public String getCity() {		return city;	}	public void setCity(String city) {		this.city = city;	}	public String getTemp() {		return temp;	}	public void setTemp(String temp) {		this.temp = temp;	}	public String getWind() {		return wind;	}	public void setWind(String wind) {		this.wind = wind;	}	public String getPm250() {		return pm250;	}	public void setPm250(String pm250) {		this.pm250 = pm250;	}	@Override	public String toString() {		return "Channel [id=" + id + ", city=" + city + ", temp=" + temp				+ ", wind=" + wind + ", pm250=" + pm250 + "]";	}					}WeatherParser.java
package com.itheima.xmpparser;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlPullParser;import android.util.Xml;public class WeatherParser {	/**	 * 服务器是以流的形式把数据返回的 	 * @return	 */	public static List<Channel> parserXml(InputStream in) throws Exception{				//[0]声明集合对象 		 List<Channel> weatherLists = null;		 Channel  channel = null;		//[1]获取XmlPullParser 解析的实例 		XmlPullParser parser = Xml.newPullParser();				//[2]设置XmlPullParser 的参数 		parser.setInput(in, "utf-8");				//[3]获取事件类型		int type = parser.getEventType();		while(type!= XmlPullParser.END_DOCUMENT){						switch (type) {			case XmlPullParser.START_TAG:   //解析开始标签				//[4]具体判断一下 解析到是哪个开始标志				if ("weather".equals(parser.getName())) {					//[5]创建一个集合对象					weatherLists = new ArrayList<Channel>();									}else if("channel".equals(parser.getName())){					//[6]创建Channel对象					channel = new Channel();					//[7]获取id值 					String id = parser.getAttributeValue(0);					channel.setId(id);									}else if("city".equals(parser.getName())){					//[8]获取city的数据 					String city = parser.nextText();					channel.setCity(city);									}else if("temp".equals(parser.getName())){					//[8]获取city的数据 					String temp = parser.nextText();					channel.setTemp(temp);														}else if("wind".equals(parser.getName())){					//[8]获取city的数据 					String wind = parser.nextText();					channel.setWind(wind);									}else if("pm250".equals(parser.getName())){					//[8]获取city的数据 					String pm250 = parser.nextText();					channel.setPm250(pm250);				}								break;			case XmlPullParser.END_TAG:     //解析结束标志 				//判断要解析的结束标签 				if ("channel".equals(parser.getName())) {					//把javabean对象存到集合中 					weatherLists.add(channel);									}								break;			}						//不停的向下解析			type = parser.next();								}				return weatherLists;			}	}MainActivity.java
package com.itheima.xmpparser;import java.io.InputStream;import java.util.List;import android.os.Bundle;import android.app.Activity;import android.widget.TextView;public class MainActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);						try {			//[1]显示天气信息 			TextView tv_weather = (TextView) findViewById(R.id.tv_weather);			//[1.1]获取资产的管理者 通过上下文 			InputStream inputStream = getAssets().open("weather.xml");						//[2]调用我们定义的解析xml业务方法			List<Channel> weatherlists = WeatherParser.parserXml(inputStream);					StringBuffer sb = new StringBuffer();			for (Channel channel : weatherlists) {				sb.append(channel.toString());			}						//[3]把数据展示到textviwe上 			tv_weather.setText(sb.toString());								} catch (Exception e) {			e.printStackTrace();		}					}	}assets下weather.xml
<?xml version="1.0" encoding="utf-8"?><weather>        <channel id ='1'>		     <city>北京</city>			 <temp>25°</temp>			 <wind>3</wind>			 <pm250>300</pm250>			 		</channel>				 <channel id ='2'>		     <city>郑州</city>			 <temp>20°</temp>			 <wind>4</wind>			 <pm250>300</pm250>			 		</channel>				<channel id ='3'>		     <city>长春</city>			 <temp>10°</temp>			 <wind>4</wind>			 <pm250>100</pm250>			 		</channel>				<channel id ='4'>		     <city>沈阳</city>			 <temp>20°</temp>			 <wind>1</wind>			 <pm250>50</pm250>		</channel></weather>