android 通过Google Weather Api 获取天气预报

获取天气的链接地址

根据经纬度获取：http://www.google.com/ig/api?weather=,,,31174165,121433841

【如中山的经纬度是：22.516997123628076,113.39263916015625 必须都乘以1000000才能作为参数】

int a=(int)22.516997123628076*1000000;
int b=(int)113.39263916015625*1000000;
String strUrl ="http://www.google.com/ig/api?hl=zh-cn&weather=,,,"+a+","+b;
System.out.println(strUrl);

根据地名获取：http://www.google.com/ig/api?hl=zh-cn&weather=Beijing

                        String strData = "";
                        String strUrl = "http://www.google.com/ig/api?hl=zh-cn&weather=ZhongShan";

                        strData = getResponse(strUrl);                        

                        // 天气预报的xml存储在sd卡中
                        new FileUnit().write(strData, "weather.xml");

                        // SAX解析xml
                        try {
                            SAXParserFactory spf = SAXParserFactory.newInstance();
                            SAXParser sp = spf.newSAXParser();
                            SAXReader saxReader = new SAXReader();
                            
                            InputSource is = new InputSource();
                            is.setByteStream(new ByteArrayInputStream(strData.getBytes()));
                            sp.parse(is, saxReader);
                            
                            weatherList=saxReader.getWeathList();
                            

                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                                                
                        //显示天气预报
                        showWeather();

根据地址 获得xml的String

   protected String getResponse(String queryURL) {
        URL url;
        try {
            url = new URL(queryURL.replace(" ", "%20"));
            URLConnection urlconn = url.openConnection();
            urlconn.connect();

            InputStream is = urlconn.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);

            ByteArrayBuffer buf = new ByteArrayBuffer(50);

            int read_data = -1;
            while ((read_data = bis.read()) != -1) {
                buf.append(read_data);
            }
            // String resp = buf.toString();
            String resp = EncodingUtils.getString(buf.toByteArray(), "GBK");
            return resp;
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "";
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "";
        }
    }

显示天气

private void showWeather(){
        List<String> weather=null;
        String strTemp="";
        for(int i=0; i<weatherList.size();i++)
        {
            weather=weatherList.get(i);
            strTemp+="\n==========================\n";
            for(int j=0;j<weather.size();j++)
            {
                strTemp+=weather.get(j)+"\n";
            }
            
        }
        tvShow.setText(strTemp);
    }

SAXReader：

package com.ReadOrder;

import java.util.ArrayList;
import java.util.List;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class SAXReader extends DefaultHandler {    
    
    private final String FORECASE_INFORMATION= "forecast_information";
    private final String CURRENT_CONDITIONS="current_conditions";
    private final String FORECAST_CONDITIONS="forecast_conditions";
    
    private List<List<String>> weatherList = null;
    private List<String> weather = null;

    private static String tagname = "";
    
    @Override
    public void startDocument() throws SAXException {
        weatherList = new ArrayList<List<String>>();
    }

    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
        if (localName.equals(FORECASE_INFORMATION)
                ||localName.equals(CURRENT_CONDITIONS)
                ||localName.equals(FORECAST_CONDITIONS)) {
            
            tagname = "current_conditions";
            weather = new ArrayList<String>();
        }        
        else {            
            if (tagname.equals(CURRENT_CONDITIONS)&& attributes.getValue("data") != null) {
                
                weather.add (attributes.getValue("data"));
                System.out.println("###" + attributes.getValue("data"));
            } 
        }
    }
    
    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {        
        
        if (localName.equals(FORECASE_INFORMATION)
                ||localName.equals(CURRENT_CONDITIONS)
                ||localName.equals(FORECAST_CONDITIONS)) {
            
            weatherList.add(weather);
            weather=null;
            tagname="";
        }            
    }

    @Override
    public void endDocument() throws SAXException {

    }

    public List<List<String>> getWeathList() {        
        if(weatherList==null||weatherList.size()<1)
        {
            return null;
        }
        else {    
            for(int i=0;i<weatherList.size();i++)
            {
                System.out.println(weatherList.get(i));
            }            
            return weatherList;            
        }        
    }
}

详细代码：

package com.ReadOrder;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import javax.crypto.spec.IvParameterSpec;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.apache.http.util.ByteArrayBuffer;
import org.apache.http.util.EncodingUtils;
import org.w3c.dom.ls.LSException;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import android.R.integer;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;

public class GoogleWeatherActivity extends Activity {

    TextView tvShow;
    List<List<String>> weatherList=null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTitle("获取天气预报");
        setContentView(R.layout.layout_weather);
        tvShow = (TextView) findViewById(R.id.TextView001);
        tvShow.setText("None Data");

        findViewById(R.id.btnGetWeather).setOnClickListener(
                new OnClickListener() {
                    @Override
                    public void onClick(View arg0) {
                        System.out.println("btnGetWeather===>onclick");                            

                        String strData = "";
                        String strUrl = "http://www.google.com/ig/api?hl=zh-cn&weather=ZhongShan";

                        strData = getResponse(strUrl);                        

                        // 天气预报的xml存储在sd卡中
                        new FileUnit().write(strData, "weather.xml");

                        // SAX解析xml
                        try {
                            SAXParserFactory spf = SAXParserFactory.newInstance();
                            SAXParser sp = spf.newSAXParser();
                            SAXReader saxReader = new SAXReader();
                            
                            InputSource is = new InputSource();
                            is.setByteStream(new ByteArrayInputStream(strData.getBytes()));
                            sp.parse(is, saxReader);
                            
                            weatherList=saxReader.getWeathList();
                            

                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                                                
                        //显示天气预报
                        showWeather();
                        
                        

                    }
                });
    }
    
    private void showWeather(){
        List<String> weather=null;
        String strTemp="";
        for(int i=0; i<weatherList.size();i++)
        {
            weather=weatherList.get(i);
            strTemp+="\n==========================\n";
            for(int j=0;j<weather.size();j++)
            {
                strTemp+=weather.get(j)+"\n";
            }
            
        }
        tvShow.setText(strTemp);
    }

    protected String getResponse(String queryURL) {
        URL url;
        try {
            url = new URL(queryURL.replace(" ", "%20"));
            URLConnection urlconn = url.openConnection();
            urlconn.connect();

            InputStream is = urlconn.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);

            ByteArrayBuffer buf = new ByteArrayBuffer(50);

            int read_data = -1;
            while ((read_data = bis.read()) != -1) {
                buf.append(read_data);
            }
            // String resp = buf.toString();
            String resp = EncodingUtils.getString(buf.toByteArray(), "GBK");
            return resp;
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "";
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "";
        }
    }
}