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。