xml文件的pull解析

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android应用程序中xml文件的pull解析：

要解析的xml文件为：info.xml，放置于src下

<?xml version="1.0" encoding="utf-8"?><info>    <city name="北京">    <temp>28°C</temp><wind>3~4级</wind><sun>晴</sun></city><city name="天津"><temp>26°C</temp><wind>3~4级</wind><sun>雷阵雨</sun></city><city name="石家庄"><temp>46°C</temp><wind>3~9级</wind><sun>下雪</sun></city><city name="邯郸"><temp>16°C</temp><wind>1~4级</wind><sun>雷</sun></city></info>

project文件结构如图：

将xml文件中的信息创建为JavaBean对象：

public class Weather {   private String city;   private String temp;   private String wind;   private String sun;   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 getSun() {return sun;}public void setSun(String sun) {this.sun = sun;}@Overridepublic String toString() {return "天气： " + city + ", 温度=" + temp + ", 风力=" + wind+","+  sun;}}

WeatherService.java类文件用pull解析读取xml文件中的信息：

public class WeatherService {    public static List<Weather> getWeatherInfo(InputStream is) throws Exception{    XmlPullParser parser=Xml.newPullParser();    parser.setInput(is, "utf-8");    //获取解析器解析的事件类型    int type=parser.getEventType();    List<Weather> weathers = null;    Weather weather = null;    while(type!=XmlPullParser.END_DOCUMENT){    switch(type){    //标签或者节点开始时候的节点    case XmlPullParser.START_TAG:    if("info".equals(parser.getName())){    //初始化天气集合信息    weathers=new ArrayList<Weather>();    }else if("city".equals(parser.getName())){    weather=new Weather();    String cityName=parser.getAttributeValue(0);    weather.setCity(cityName);    }else if("temp".equals(parser.getName())){    String temp=parser.nextText();    weather.setTemp(temp);    }else if("wind".equals(parser.getName())){    String wind=parser.nextText();    weather.setWind(wind);    }else if("sun".equals(parser.getName())){    String sun=parser.nextText();    weather.setSun(sun);    }    break;    //标签结束    case XmlPullParser.END_TAG:    //发现已解析完一个城市信息    if("city".equals(parser.getName())){    weathers.add(weather);    weather=null;    }    break;    }    //让解析器去解析下一个tag节点    type=parser.next();    }return weathers;    }}

在布局文件中设置一个TextViw用于显示从xml中读取的信息，MainActivity.java

public class MainActivity extends Activity {     private TextView tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_main);tv=(TextView) findViewById(R.id.tv);InputStream in=getClassLoader().getResourceAsStream("info.xml");//解析xml获取天气信息       try { List<Weather> weathers= WeatherService.getWeatherInfo(in); StringBuilder sb=new StringBuilder(); for(Weather weather:weathers){ sb.append(weather); sb.append("\n"); } tv.setText(sb.toString());    } catch (Exception e) {   e.printStackTrace();   Toast.makeText(this, "解析天气信息失败", 1).show();    }}}

最终实现的效果如图：

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