由于中国天气网的天气API不更新数据，我就使用百度车联网天气查询的API，需要得到的天气没怎么详细，但还是先用着，上效果图
关于定位部分可以查看：Android基于百度定位SDK（LBS）实现定位功能
车联网的天气查询可以得到json或xml数据，这里只讲如何解析xml数据；更详细信息可以查看：车联网天气查询
从网页上读取到的数据是
<CityWeatherResponse> <status>success</status> <date>2014-04-14</date> <results> <currentCity>深圳</currentCity> <weather_data> <date>周一(今天,实时：23℃)</date> <dayPictureUrl>http://api.map.baidu.com/images/weather/day/yin.png</dayPictureUrl> <nightPictureUrl>http://api.map.baidu.com/images/weather/night/yin.png</nightPictureUrl> <weather>阴</weather> <wind>微风</wind> <temperature>26 ~ 21℃</temperature> <date>周二</date> <dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl> <nightPictureUrl>http://api.map.baidu.com/images/weather/night/duoyun.png</nightPictureUrl> <weather>多云</weather> <wind>微风</wind> <temperature>27 ~ 20℃</temperature> <date>周三</date> <dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl> <nightPictureUrl>http://api.map.baidu.com/images/weather/night/duoyun.png</nightPictureUrl> <weather>多云</weather> <wind>微风</wind> <temperature>28 ~ 20℃</temperature> <date>周四</date> <dayPictureUrl>http://api.map.baidu.com/images/weather/day/duoyun.png</dayPictureUrl> <nightPictureUrl>http://api.map.baidu.com/images/weather/night/duoyun.png</nightPictureUrl> <weather>多云</weather> <wind>微风</wind> <temperature>29 ~ 22℃</temperature> </weather_data> </results> </CityWeatherResponse>
这个APP只要就是读取指定的xml，并解析让用户看起来更直观
程序目录结构
获取xml数据WeatherSource.java
package com.dzt.weather;
import android.os.AsyncTask;
import com.dzt.weather.constant.GlobalConstants;
import com.dzt.weather.utils.NetworkUtils;
public class WeatherSource {
private boolean mIsFinish = false;
private String mResult;
private OnFinishListener mFinishListener = null;
private String mCity;
public WeatherSource(String city) {
mCity = city;
new GetSource().execute();
}
public boolean isFinish() {
return mIsFinish;
}
public String getResult() {
return mResult;
}
class GetSource extends AsyncTask<String,Integer,String> {
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
GlobalConstants.PrintLog_D("[GetSource->doInBackground]");
mIsFinish = false;
try { // http://www.weather.com.cn/data/sk/101280601.html 不再更新天气
String path = "http://api.map.baidu.com/telematics/v3/weather?location="
+ mCity
+ "&output=xml&ak=640f3985a6437dad8135dae98d775a09";
return NetworkUtils.HttpGet(path);
} catch (Exception e) {
System.out.println("doInBackground--Exception");
e.printStackTrace();
return null;
} // http://61.4.185.48:81/g/
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
mResult = result;
mIsFinish = true;
if (mFinishListener != null) {
mFinishListener.OnFinish(result);
}
GlobalConstants.PrintLog_D("[GetSource->onPostExecute]" + result);
}
}
public void setOnFinishListener(OnFinishListener listener) {
mFinishListener = listener;
}
public interface OnFinishListener {
public void OnFinish(String result);
}
}
得到数据后通过SAX解析xml数据WeatherHandler.java
package com.dzt.weather;
import java.util.ArrayList;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* 使用SAX解析百度车联网天气查询得到的xml文件。 http://developer.baidu.com/map/carapi-7.htm
*
* @author dzt 2014.04.14
*
*/
public class WeatherHandler extends DefaultHandler {
String status,date,currentCity;
String tagName;
WeatherInfo weatherInfo = null;
ArrayList<WeatherInfo> weatherInfos;
int flag = 0;
public ArrayList<WeatherInfo> getWeathers() {
return weatherInfos;
}
public String getDate() {
return date;
}
public String getCity() {
return currentCity;
}
/**
* 开始解析xml文件
*/
public void startDocument() throws SAXException {
weatherInfos = new ArrayList<WeatherInfo>();
System.out.println("````````begin````````");
}
/**
* 解析xml文件结束
*/
public void endDocument() throws SAXException {
System.out.println("````````end````````");
}
/**
* 开始解析标签
*/
public void startElement(String namespaceURI,String localName,String qName,Attributes attr) throws SAXException {
tagName = localName;
if (localName.equals("CityWeatherResponse")) {
System.out.println("start-----CityWeatherResponse");
// 获取标签的全部属性
for (int i = 0; i < attr.getLength(); i++) {
System.out.println("startElement " + attr.getLocalName(i) + "="
+ attr.getValue(i));
}
} else if (localName.equals("date")) {
flag++;
if (flag > 1) {
weatherInfo = new WeatherInfo();
}
} else if (localName.equals("results")) {
System.out.println("start-----results");
} else if (localName.equals("weather_data")) {
System.out.println("start-----weather_data");
}
}
/**
* 读取到内容
*/
public void characters(char[] ch,int start,int length)
throws SAXException {
// System.out.println("characters---tagName = " + tagName);
if (tagName != null) {
String data = new String(ch,start,length);
if (tagName.equals("status"))
status = data;
else if (tagName.equals("currentCity"))
currentCity = data;
else if (tagName.equals("date")) {
if (flag == 1) {
date = data;
} else {
weatherInfo.setDate(data);
}
} else if (tagName.equals("dayPictureUrl")) {
weatherInfo.setDayPictureUrl(data);
} else if (tagName.equals("nightPictureUrl")) {
weatherInfo.setNightPictureUrl(data);
} else if (tagName.equals("weather")) {
weatherInfo.setWeather(data);
} else if (tagName.equals("wind")) {
weatherInfo.setWind(data);
} else if (tagName.equals("temperature")) {
weatherInfo.setTemperature(data);
}
}
}
/**
* 解析标签结束
*/
public void endElement(String namespaceURI,String qName)
throws SAXException {
// 在workr标签解析完之后，会打印出所有得到的数据
tagName = "";
if (localName.equals("CityWeatherResponse")) {
System.out.println("end-----CityWeatherResponse");
flag = 0;
// printout();
} else if (localName.equals("results")) {
System.out.println("end-----results");
} else if (localName.equals("weather_data")) {
System.out.println("end-----weather_data");
} else if (localName.equals("temperature")) {
weatherInfos.add(weatherInfo);
}
}
// 打开一个标签的内容
public void printout() {
System.out.println("status: " + status);
System.out.println("date: " + date);
System.out.println("currentCity: " + currentCity);
for (int i = 0; i < weatherInfos.size(); i++) {
System.out.println(weatherInfos.get(i).toString());
}
System.out.println();
}
}由于百度车联网天气查询有两个date标签，所以在这里我用flag变量来控制。
天气实体类WeatherInfo.java
package com.dzt.weather;
/**
* 天气信息实体类
*
* @author dzt 2014.04.12
*
*/
public class WeatherInfo {
private String date; // 日期
private String dayPictureUrl; // 白天天气图片
private String nightPictureUrl; // 晚上天气图片
private String weather;
private String wind;
private String temperature;
public WeatherInfo() {
}
public WeatherInfo(String date,String dayPictureUrl,String nightPictureUrl,String weather,String wind,String temperature) {
this.date = date;
this.dayPictureUrl = dayPictureUrl;
this.nightPictureUrl = nightPictureUrl;
this.weather = weather;
this.wind = wind;
this.temperature = temperature;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getDayPictureUrl() {
return dayPictureUrl;
}
public void setDayPictureUrl(String dayPictureUrl) {
this.dayPictureUrl = dayPictureUrl;
}
public String getNightPictureUrl() {
return nightPictureUrl;
}
public void setNightPictureUrl(String nightPictureUrl) {
this.nightPictureUrl = nightPictureUrl;
}
public String getWeather() {
return weather;
}
public void setWeather(String weather) {
this.weather = weather;
}
public String getWind() {
return wind;
}
public void setWind(String wind) {
this.wind = wind;
}
public String getTemperature() {
return temperature;
}
public void setTemperature(String temperature) {
this.temperature = temperature;
}
@Override
public String toString() {
return "WeatherInfo [date=" + date + ",dayPictureUrl=" + dayPictureUrl
+ ",nightPictureUrl=" + nightPictureUrl + ",weather="
+ weather + ",wind=" + wind + ",temperature=" + temperature
+ "]";
}
}
更多的代码我就不贴出来了，有需要的可以下载：http://download.csdn.net/detail/deng0zhaotai/7192795
声明下必须要有网络才能定位和获取天气信息。
今天(2014.05.05)在网上找到一个更详细的天气信息
http://wthrcdn.etouch.cn/weather_mini?city=深圳
通过城市名字获得天气数据，json数据
http://wthrcdn.etouch.cn/weather_mini?citykey=101280601
通过城市id获得天气数据，json数据
http://wthrcdn.etouch.cn/WeatherApi?citykey=101280601 通过城市id获得天气数据，xml文件数据,当错误时会有<error>节点 http://wthrcdn.etouch.cn/WeatherApi?city=深圳 通过城市名字获得天气数据，xml文件数据
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