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：

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。