Android天气预报之基于HttpGet对象解析天气数据的方法

本文实例所述为Android天气预报之解析天气数据的代码，可实现获取HttpGet对象读取天气网站天气数据，并从数据中解析出天气数据，比如温度、温度、风力、风向、未来几天天气趋势、当天天气状况、空气污染指数等信息，还包括了调用对应的图片或天气动画文件，对于开发android天气预报程序的可以参考本文实例。

具体功能代码如下：

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import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; import java.util.Locale; import net.tsz.afinal.FinalHttp; import net.tsz.afinal.http.AjaxCallBack; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; import org.json.JSONException; import org.json.JSONObject; import org.lmw.weather.MyApp; import org.lmw.weather.entity.WeatherEntity; import android.app.Activity; import android.os.Handler; import android.os.Message; /**   * 解析天气数据   * @author Dave   */ public class WeatherData {   private Activity activity;   private FinalHttp fh;   public static String def_weather_key= "def_weather" ;   public WeatherData(Activity activity) {   this .activity = activity;   fh = new FinalHttp();   fh.configTimeout( 1000 * 3 );   }   public void getData( final String cityId, final Handler hd) {   StringBuffer sb_url = new StringBuffer();   sb_url.append( "http://0.qnweather.duapp.com/weather.php?uri=" );   sb_url.append( "http://m.weather.com.cn/data/" );   sb_url.append(cityId);   sb_url.append( ".html" );   final Message msg= new Message();   fh.get(sb_url.toString(), new AjaxCallBack() {    @Override    public void onSuccess(Object t) {    super .onSuccess(t);    MySharedPreferences.writeMessage(activity, "def_weather" ,t.toString());    msg.what= 0 ;    msg.obj=parseJson(t.toString());    hd.sendMessage(msg);    }    @Override    public void onFailure(Throwable t, int errorNo, String strMsg) {    super .onFailure(t, errorNo, strMsg);    System.out.println( "-------errorNo---------" +errorNo);    msg.what=- 1 ;    msg.arg1=errorNo;    msg.obj=MySharedPreferences.readMessage(activity, def_weather_key, "" );    hd.sendMessage(msg);    }   });   }   private String connServerForResult(String strUrl) {   // 获取HttpGet对象   HttpGet httpRequest = new HttpGet(strUrl);   String strResult = "" ;   try {    // HttpClient对象    HttpClient httpClient = new DefaultHttpClient();    // 获得HttpResponse对象    HttpResponse httpResponse = httpClient.execute(httpRequest);    if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {    // 取得返回的数据    strResult = EntityUtils.toString(httpResponse.getEntity());    }   } catch (ClientProtocolException e) {    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   } catch (Exception e) {    e.printStackTrace();   }   System.out.println( "rresult" + strResult);   return strResult; // 返回结果   }   // 数据解析   private WeatherEntity parseJson(String strResult) {   WeatherEntity weather = null ;   try {    JSONObject jsonObj = new JSONObject(strResult.replace( "℃" , "°" ))     .getJSONObject( "weatherinfo" );    weather = new WeatherEntity();    int ftime = jsonObj.getInt( "fchh" ); // 更新时间（整点）【更新时间确定temp属于哪天】    int temp = 0 ; // 偏移    if (ftime >= 18 || ftime < 8 ) {    weather.setNight( true );    temp = 1 ;    }    MyApp.week = jsonObj.getString( "week" ); // 今天星期几    weather.setCity(jsonObj.getString( "city" )); // 城市    weather.setComfortable(jsonObj.getString( "index" )); // 舒适度    weather.setRefreshDate(getDate()); // 更新日期    weather.setRefreshTime(getTime()); // 更新时间    weather.setRefreshWeek(getWeek()); // 更新星期    weather.setPicIndex(jsonObj.getInt( "img1" )); // 当天天气图片编号    List<Integer> topPic = new ArrayList<Integer>(); // 最高温时的图片编号    if (temp == 1 ) {    topPic.add(getSavePic(activity));    } else {    topPic.add(getJsonPic(jsonObj, "img" , 1 + temp));    savePic(activity, topPic.get( 0 ));    }    topPic.add(getJsonPic(jsonObj, "img" , 3 - temp));    topPic.add(getJsonPic(jsonObj, "img" , 5 - temp));    topPic.add(getJsonPic(jsonObj, "img" , 7 - temp));    weather.setTopPic(topPic);    List<Integer> lowPic = new ArrayList<Integer>(); // 最低温时的图片编号    lowPic.add(getJsonPic(jsonObj, "img" , 2 - temp));    lowPic.add(getJsonPic(jsonObj, "img" , 4 - temp));    lowPic.add(getJsonPic(jsonObj, "img" , 6 - temp));    lowPic.add(getJsonPic(jsonObj, "img" , 8 - temp));    weather.setLowPic(lowPic);    // ---------------------------以上为获取图片编号，暂且不管----------------------------------------------------------------------    List<String> tempList = new ArrayList<String>(); // 未来五天温度（第一个是今天）    tempList.add(jsonObj.getString( "temp1" ));    tempList.add(jsonObj.getString( "temp2" ));    tempList.add(jsonObj.getString( "temp3" ));    tempList.add(jsonObj.getString( "temp4" ));    tempList.add(jsonObj.getString( "temp5" ));    tempList.add(jsonObj.getString( "temp6" ));    MyApp.tempList.clear();    MyApp.tempList = tempList;    List<String> weatherList = new ArrayList<String>(); // 未来五天天气（第一个是今天）    weatherList.add(jsonObj.getString( "weather1" ));    weatherList.add(jsonObj.getString( "weather2" ));    weatherList.add(jsonObj.getString( "weather3" ));    weatherList.add(jsonObj.getString( "weather4" ));    weatherList.add(jsonObj.getString( "weather5" ));    weatherList.add(jsonObj.getString( "weather6" ));    MyApp.weatherList.clear();    MyApp.weatherList = weatherList;    List<String> tempListMax = new ArrayList<String>(); // 未来五天最高温度集合（有°符号）    if (temp == 1 ) {    tempListMax.add(getSaveTemperature(activity));    } else {    tempListMax     .add(getTemperatureMaxAndMin(tempList.get( 0 ))[ 0 + temp]);    saveTemperature(activity, tempListMax.get( 0 ));    }    tempListMax     .add(getTemperatureMaxAndMin(tempList.get( 1 - temp))[ 0 + temp]);    tempListMax     .add(getTemperatureMaxAndMin(tempList.get( 2 - temp))[ 0 + temp]);    tempListMax     .add(getTemperatureMaxAndMin(tempList.get( 3 - temp))[ 0 + temp]);    weather.setTemperatureMax(tempListMax);    weather.setTodayTemperature(getTemperatureMaxAndMin(tempList.get( 0 ))[ 0 ]); // 当天温度（实时）    weather.setTodayWeather(jsonObj.getString( "img_title1" )); // 当天天气描述（实时）    List<String> tempListMin = new ArrayList<String>(); // 未来四天最低温度集合（有°符号）    tempListMin.add(getTemperatureMaxAndMin(tempList.get( 0 ))[ 1 - temp]);    tempListMin.add(getTemperatureMaxAndMin(tempList.get( 1 ))[ 1 - temp]);    tempListMin.add(getTemperatureMaxAndMin(tempList.get( 2 ))[ 1 - temp]);    tempListMin.add(getTemperatureMaxAndMin(tempList.get( 3 ))[ 1 - temp]);    weather.setTemperatureMin(tempListMin);    weather.setTomorrowTemperature(tempList.get( 1 )); // 明天温度（包括最高温和最低温）    if (temp == 1 ) {    weatherList.add(getSaveWeather(activity));    } else {    weatherList.add(jsonObj.getString( "weather" + 1 ));    saveWeather(activity, weatherList.get( 0 ));    }    weatherList.add(jsonObj.getString( "weather" + ( 2 - temp)));    weatherList.add(jsonObj.getString( "weather" + ( 3 - temp)));    weatherList.add(jsonObj.getString( "weather" + ( 4 - temp)));    weather.setWeather(weatherList);    weather.setTomorrowWeather(weatherList.get( 1 ));    List<String> windList = new ArrayList<String>(); // 未来四天风力    windList.add(jsonObj.getString( "wind1" ));    windList.add(jsonObj.getString( "wind2" ));    windList.add(jsonObj.getString( "wind3" ));    windList.add(jsonObj.getString( "wind4" ));    weather.setWind(windList);    weather.setMaxlist(transplate(tempListMax)); // 未来四天最高温度集合（无°符号）    weather.setMinlist(transplate(tempListMin)); // 未来四天最低温度集合（无°符号）   } catch (JSONException e) {    e.printStackTrace();   }   return weather;   }   // 获取更新日期 并转换为（X月X日 周X）   private String getDate() {   SimpleDateFormat sdf = new SimpleDateFormat( "MM月dd日 EEE" , Locale.CHINA);   String date = sdf.format( new java.util.Date());   System.out.println(date);   return date;   }   // 获取更新时间 并转换为 （小时：分钟 更新）   private String getTime() {   SimpleDateFormat sdf = new SimpleDateFormat( "HH:mm" , Locale.CHINA);   String time = sdf.format( new java.util.Date()) + " " + "更新" ;   System.out.println(time);   return time;   }   private String getWeek() {   return null ;   }   // 获取最高温度和最低温度，有°符号   private String[] getTemperatureMaxAndMin(String str) {   return str.split( "~" );   }   // 去除最高温度和最低温度里的°符号   private List<Integer> transplate(List<String> strList) {   List<Integer> intList = new ArrayList<Integer>();   for (String temp : strList) {    intList.add(Integer.valueOf(temp.split( "°" )[ 0 ]));   }   return intList;   }   // 获取图片编号 例如"img" + "1"   private int getJsonPic(JSONObject jsonObj, String str, int index)    throws JSONException {   int result = jsonObj.getInt(str + index);   if (result == 99 && index > 1 ) {    index--;    result = jsonObj.getInt(str + index);   }   return result;   }   private void saveTemperature(Activity activity, String value) {   // MySharedPreferences mp = new MySharedPreferences(activity);   // mp.writeMessage("temperature", value);   }   // 保存的温度   private String getSaveTemperature(Activity activity) {   return MySharedPreferences.readMessage(activity, "temperature" , "100" );   }   private void saveWeather(Activity activity, String value) {   // MySharedPreferences mp = new MySharedPreferences(activity);   // mp.writeMessage("weather", value);   }   // 保存的天气   private String getSaveWeather(Activity activity) {   return MySharedPreferences.readMessage(activity, "weather" , "" );   }   private void savePic(Activity activity, int value) {   // MySharedPreferences mp = new MySharedPreferences(activity);   // mp.writeMessage("pic", value);   }   // 保存的天气图片编号   private int getSavePic(Activity activity) {   return MySharedPreferences.readMessage(activity, "pic" , 99 );   } }

希望本文实例对大家Android天气预报程序的开发能够起到一定的帮助作用。

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