Android中Xml文件的解析

Xml文件有多种解析方式，这里使用Pull解析器进行解析

Weather.xml

<?xml version="1.0" encoding="UTF-8"?>
<?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>江西</city>
        <temp>30℃</temp>
        <wind>4</wind>
        <pm250>200</pm250>
    </channel>
    <channel id="3">
        <city>湖北</city>
        <temp>30℃</temp>
        <wind>2</wind>
        <pm250>300</pm250>
    </channel>
    <channel id="4">
        <city>杭州</city>
        <temp>30℃</temp>
        <wind>4</wind>
        <pm250>200</pm250>
    </channel>
</weather>

Channel.java

public class Channel{
   private String id;
   private String city;
   private String temp;
   private String wind;
   private String pm250;

    省略get(),set()方法...
}

WeatherParser.java

package bean;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import android.util.Xml;

public class WeatherParser {
	public static List<Channel> parserXML(InputStream in) throws Exception {
		List<Channel> list = null;
		Channel channel = null;
		XmlPullParser parser = Xml.newPullParser();
		parser.setInput(in, "UTF-8");
		int type = parser.getEventType();
		while (type != XmlPullParser.END_DOCUMENT) {
			switch (type) {
			case XmlPullParser.START_TAG:
				if ("weather".equals(parser.getName())) {
					//开始标签创建集合
					list = new ArrayList<Channel>();
				} else if ("channel".equals(parser.getName())) {
					//创建实体
					channel = new Channel();
					//id为属性 使用parser.getAttributeName()方法获取,0表示第一个属性
					String id = parser.getAttributeName(0);
					channel.setId(id);
				} else if ("city".equals(parser.getName())) {
					String city = parser.nextText();
					channel.setCity(city);
				} else if ("wind".equals(parser.getName())) {
					String wind = parser.nextText();
					channel.setWind(wind);
				} else if ("pm250".equals(parser.getName())) {
					String pm250 = parser.nextText();
					channel.setPm250(pm250);
				} else if ("temp".equals(parser.getName())) {
					String temp = parser.nextText();
					channel.setTemp(temp);
				}
				break;
			case XmlPullParser.END_TAG:
				if ("channel".equals(parser.getName())) {
					//遇到结束标签则将channel添加进集合
					list.add(channel);
				}
				break;
			}
			//走完一次指针向下移动一次
			type = parser.next();
		}
		return list;
	}
}

XMLParserAciticity.java

package com.example.test_practice;

import java.io.InputStream;
import java.util.List;
import ParserUtil.Parser;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import bean.Channel;

public class XMLParserAciticity extends Activity {
	private TextView mTv;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.parser);
		mTv = (TextView) findViewById(R.id.tv);
		try {
			InputStream in = getResources().getAssets().open("weather.xml");
			List<Channel> list = Parser.WeatherParser(in);
			StringBuffer sb = new StringBuffer();
			for (Channel channel : list) {
				sb.append(channel.toString());
			}
			mTv.setText(sb);

		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

运行后截图如下:

赏

谢谢你请我吃糖果