Android利用Gson解析實(shí)現(xiàn)天氣預(yù)報(bào)

1、用AndroidStudio新建一個默認(rèn)工程后，將即可5'H'AndroidQ|4215app-imanifests蜀AndroidlVIarife&t.xmI巴j白疔白2 匚om.example.rul.weatherforecastnOIVIainActivity0WeatherintoKUcom.example.rui.weatherforecastJandroidTest)3 kbcom.example.rui.weatherforecast僉tt=res巧鯨bdrawabletblayouteoactivityjriain.xirI Eainpmap bval

2、uesGGradleScriptsObuild.gradle(Project:WeatherForecast)Ubuild.gracileModule:appliBperties(CradleVer&ion)胃proguard-rules.pre(ProGuardRulesforapp)需perti&sProjectPrapertiesJOtting&.gradle(ProjectS&ttings)關(guān)pertiesSDKLocation)魚AndroidManiiest.xmImanif

3、est<?xralversion-L0encodin,manifestxnilns:android-http:/s匚hieiELa訂.androidcom/apk/re5/andro1d*package-com.esainple.rui.卿加曲銅尿<uses-perinissionandroidmame-andi_oid,permissimrINTERNET<applic：at-ianandro1d;a11owBackiip-t.rueffandroid:icon-Snipnirip/ic_letunchei-'android:label-WeatherFarecas

4、t8*androldzroumdl匚onfc0tlpmcipfic_riiincher_LouncTandroid:suppertsRtltrue1'5android;theme-©style/AppTheme><actlvityandi_oid:namF,MfiihAgt-ivity用><intent_filter><actionandroid;naines“sndro丄dintent.Baction.WAIIT/>16<cateEoryandroid:name-randi-oid»intent,ceitREory.

5、LAIINCFER/></intent_f11ter</acti¥ity</application21usespermissionandroid:name="android.permission.INTERNET"GMaiinActivityjavaUaiiiictivirypackagecom.exactplemi.weatherforceasi;1+import.publicclassMainActivityextendsAppCompat.Activlty(Edit-Testet_cityret.weather,et.highTeni

6、p,et.lowTemp;更題克烘邊圾weatherinfo;Weatherinfo.Weatherweather;©OverrideprotectedvoidorCreateEinidLesavedlnstanceStaTe)superonCreate(savedlnstanceState):合ContentViewfRrlayout,t?ct2ritv_aj?ain):init0;加*初始化控件并開皓事件packagecom.example.rui.weatherforecast;importandroid.os.Handler;importandroid.os.Message;

7、importandroid.supportv7app.AppCompatActivity;importandroidosBundle;importandroidwidget.EditText;importandroidwidget.Toast;importcomgooglegsonGson;importjavaio.BufferedReader;importjavaio.IOException;importjavaio.InputStream;importjavaio.InputStreamReader;importjavanetHttpURLConnection;.MalformedURLE

8、xception;importjavanetProtocolException;importjavanetURL;publicclassMainActivityextendsAppCompatActivityEditTextet_city,et_weather,et_highTemp,et_lowTemp;Weatherinfoweatherinfo;Weatherinfo.Weatherweather;OverrideprotectedvoidonCreate(BundlesavedlnstanceState)super.onCreate(savedlnstanceState);setCon

9、tentView(R.layout.activity.mail);init();/*初始化控件并開始事件*/publicvoidinit()/獲取控件et_city=(EditText)findViewById(R.id.city);et_weather=(EditText)findViewById(R.id.weathe©；et_highTemp=(EditText)findViewById(R.id.highTemp);et_lowTemp=(EditText)findViewById(R.id.lowTemp)；/*新建線程進(jìn)行查詢天氣*/newThread()Override

10、publicvoidrun()Stringstrurl="getweathers(strurl);catch(MalformedURLExceptione)e.printStackTrace();.start();/*子線程響應(yīng)處理*/HandlermHandler=newHandler()OverridepublicvoidhandleMessage(Messagemsg)super.handleMessage(msg);if(msg.what=1)Toast.makeText(MainActivity.this,"天氣"+weatherinfo.getWeat

11、herinfo()getCity()+weatherinfo.getWeatherinfo()getTempl()ToastLENGTH_SHOR®.show();et_city.setText(weather.getCity();et_weather.setText(weather.getWeather();et_lowTemp.setText(weather.getTemp1();et_highTemp.setText(weather.getTemp2();/*解析JSON數(shù)據(jù)轉(zhuǎn)換并賦值到實(shí)體類中* parampath* throwsMalformedURLException*/

12、publicvoidgetweathers(Stringpath)throwsMalformedURLExceptionStringstrjson=(String)getConnetion(path);Gsongson=newGson();weatherinfo=gson.fromJson(strjson,Weatherinfo.class);weather=weatherinfo.getWeatherinfo();/完成后發(fā)送消息給Handler進(jìn)行下一個事件Messagemsg=newMessage();msg.what=1;mHandler.sendMessage(msg);/*聯(lián)網(wǎng)獲取

13、JSON數(shù)據(jù)*parampath* return* throwsMalformedURLException*/publicStringgetConnetion(Stringpath)throwsMalformedURLExceptionURLurl=newURL(path);tryHttpURLConnectionconnection=(HttpURLConnection)url.openConnection();connection.setConnectTimeout(5000);connection.setReadTimeout(5000);connection.setRequestMet

14、hod("GET");InputStreamReaderinputStreamReader=newInputStreamReader(connection.getInputStream();BufferedReaderbufferedReader=newBufferedReader(inputStreamReader);Stringline=bufferedReader.readLine().toString();bufferedReader.close();inputStreamReader.close();returnline;catch(ProtocolExcepti

15、one)e.printStackTrace();catch(IOExceptione)e.printStackTrace();returnnull;J4-0WeatherinfojavaH'eatherinfosetWeatherinfoO1*CreatdbyJiza曲2018/1/2.5vpublicclassWeatherinfoprivateWeather麟簸戎如；10piLblicleathergeiffearherinfo()retiLcneaLh&rinfcij卜1314亡Publicvoidfather<15this,weathsrinfa-weatheri

16、nfa;|L61Li18publicclassleather19privateStringcity;120privateStringcitvid;priva七曰StrinstEnpl;privateStringtetripS;23privateStringweaiher;privateStringimgl;125prisrateStringimg2;»尸亠packagecom.example.rui.weatherforecast;/*CreatedbyRuion2018/1/2.*/publicclassWeatherinfoprivateWeatherweatherinfo;pu

17、blicWeathergetWeatherinfo()returnweatherinfo;publicvoidsetWeatherinfo(Weatherweatherinfo)this.weatherinfo=weatherinfo;publicclassWeatherprivateStringcity;privateStringcityid;privateStringtempi;privateStringtemp2;privateStringweather;privateStringimgi;privateStringimg2;privateStringptime;publicString

18、getCity()returncity;publicvoidsetCity(Stringcity)this.city=city;publicStringgetCityid()returncityid;publicvoidsetCityid(Stringcityid)this.cityid=cityid;publicStringgetTempi()returntempi;publicvoidsetTempi(Stringtempi)this.tempi=tempi;publicStringgetTemp2()returntemp2;publicvoidsetTemp2(Stringtemp2)t

19、his.temp2=temp2;publicStringgetWeather()returnweather;publicvoidsetWeather(Stringweather)this.weather=weather;publicStringgetlmgl()returnimgl;publicvoidsetImg1(Stringimgl)this.img1=img1;publicStringgetlmg2()returnimg2;publicvoidsetImg2(Stringimg2)this.img2=img2;publicStringgetPtime()returnptime;publ

20、icvoidsetPtime(Stringptime)this.ptime=ptime;android:ems="10"requestFocus/>/EditTextTextViewandroid:id="+id/textView2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="天氣："/><EditTextandroid:id="+id/wea

21、ther"android:layout_width="match_parent"android:layout_height="wrap_content"android:ems="10"/><TextViewandroid:id="+id/textView3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="最高溫度："

22、;/><EditTextandroid:id="+id/highTemp"android:layout_width="match_parent"android:layout_height="wrap_content"android:ems="10"/><TextViewandroid:id="+id/textView4"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="最低溫度："/><EditTextandroid:id="+id/lowTemp"android:layout_width="match_parent"android:layou