//通过activity传值获取到当前fragment加载的是哪个地方的天气情况 Bundle arguments = getArguments(); String city=arguments.getString("city"); getWeatherCity(city);

public class FragmentPagerAdapter extends FragmentStatePagerAdapter {List fragmentList; //主界面传入的fragmenr的集合 public FragmentPagerAdapter(FragmentManager fragmentManager,List fragments) {super(fragmentManager); this.fragmentList=fragments; } @NonNull @Override public Fragment getItem(int position) { //根据位置获取集合条目内容 return fragmentList.get(position); }@Override public int getCount() { //获取集合条目个数 return fragmentList.size(); } }

public static final String URL_WEATHER="https://tianqiapi.com/api?unescape=1&version=v1&appid=22444194&appsecret=EG7XHDop"; public static String doGet(String urlString){String result=""; String line; StringBuilder stringBuilder=null; BufferedReader bufferedReader=null; //连接网络 HttpURLConnection connection=null; InputStreamReader isr=null; try {URL url=new URL(urlString); connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); //链接方式 connection.setConnectTimeout(5000); //超时时间 //从连接中读取数据(二进制) InputStream inputStream=connection.getInputStream(); //对数据流进行加工 isr=new InputStreamReader(inputStream); //创建缓冲区，将二进制流送入 bufferedReader=new BufferedReader(isr); //从缓冲区一行一行读取字符串 stringBuilder=new StringBuilder(); while ((line=bufferedReader.readLine())!=null){stringBuilder.append(line); //进行拼接 } result=stringBuilder.toString(); } catch (Exception e) {e.printStackTrace(); }finally {try {//关闭流 connection.disconnect(); bufferedReader.close(); isr.close(); } catch (IOException e) {e.printStackTrace(); } } return result; } //拼接出来获取天气的url public static String getWeatherOfCity(String city){String url=URL_WEATHER+"&city="+city; Log.i("Aye","URL:"+url); Log.i("Aye","URLResult:"+doGet(url)); returndoGet(url); }

private void getWeatherCity(String selectCity) {//开启子线程，请求网络 new Thread(new Runnable() {@Override public void run() {//请求网络 String weatherOfCity=NetUtil.getWeatherOfCity(selectCity); //使用handler将数据传递给主线程 Message message=Message.obtain(); message.what=0; message.obj=weatherOfCity; handler.sendMessage(message); } }).start(); }

private Handler handler=new Handler(Looper.myLooper()){@Override public void handleMessage(@NonNull Message msg) {super.handleMessage(msg); if (msg.what==0){//主线程收到的天气数据 String weather= (String) msg.obj; Log.i("Aye","主线程收到的天气数据："+weather); //使用gson解析 Gson gson=new Gson(); JsonRootBean jsonRootBean=gson.fromJson(weather, JsonRootBean.class); updateWeather(jsonRootBean); //更新天气数据并显示 } } };

//数据显示 private void updateWeather(JsonRootBean jsonRootBean) {if (jsonRootBean!=null){List dayWeather = jsonRootBean.getData(); //获取每一天的数据 Data todayWeather = dayWeather.get(0); //获取今天的数据 //不为空则显示今天天气数据 if (todayWeather!=null){tempTv.setText(todayWeather.getTem1()); mainWeatherTv.setText(todayWeather.getWea()); ; todayTv.setText("今天："+todayWeather.getWea()); todayAirTv.setText("空气："+todayWeather.getAir_level()); todayTempTv.setText(todayWeather.getTem()+"~"+todayWeather.getTem2()); todayIconIv.setImageResource(getImg(todayWeather.getWea_img())); windTv.setText(todayWeather.getWin_speed()); humidityTv.setText(todayWeather.getHumidity()); pressureTv.setText(todayWeather.getPressure()+"hPa"); windTv1.setText(todayWeather.getWin().get(0)); sunriseTv.setText("日出："+todayWeather.getSunrise()); sunsetTv.setText("日落："+todayWeather.getSunset()); } //获取明天的数据 Data tomorrowWeather = dayWeather.get(1); //不为空则显示明天数据 if (tomorrowWeather!=null){tomorrowTv.setText("明天："+tomorrowWeather.getWea()); tomorrowAirTv.setText("空气："+tomorrowWeather.getAir_level()); tomorrowTempTv.setText(tomorrowWeather.getTem()+"~"+tomorrowWeather.getTem2()); tomorrowIconIv.setImageResource(getImg(tomorrowWeather.getWea_img())); } //获取后天的数据 Data afterWeather = dayWeather.get(2); //不为空则显示后天天气数据 if (afterWeather!=null){afterTv.setText("后天："+afterWeather.getWea()); afterAirTv.setText("空气："+afterWeather.getAir_level()); afterTempTv.setText(afterWeather.getTem()+"~"+afterWeather.getTem2()); afterIconIv.setImageResource(getImg(afterWeather.getWea_img())); } //获取指数信息 List index = todayWeather.getIndex(); //不为空则显示 if (index!=null) {//紫外线指数 UVTitle = index.get(0).getTitle(); UVLevel = index.get(0).getLevel(); UVDesc = index.get(0).getDesc(); //穿衣指数 clotheTitle = index.get(3).getTitle(); clotheLevel = index.get(3).getLevel(); clotheDesc = index.get(3).getDesc(); //运动指数 sportTitle=index.get(1).getTitle(); sportLevel=index.get(1).getLevel(); sportDesc=index.get(1).getDesc(); //洗车指数 carTitle=index.get(4).getTitle(); carLevel=index.get(4).getLevel(); carDesc=index.get(4).getDesc(); //血糖指数 sickTitle=index.get(2).getTitle(); sickLevel=index.get(2).getLevel(); sickDesc=index.get(2).getDesc(); //空气污染指数 airTitle=index.get(5).getTitle(); airLevel=index.get(5).getLevel(); airDesc=index.get(5).getDesc(); } //获取逐小时天气情况，传递给Adapter用于显示 List timeBean = todayWeather.getHours(); weatherAdapter=new WeatherAdapter(getActivity(),timeBean); LinearLayoutManager manager=new LinearLayoutManager(getActivity(), RecyclerView.HORIZONTAL,false); hoursRv.setAdapter(weatherAdapter); hoursRv.setLayoutManager(manager); } }

private int getImg(String wea_img) {int result = 0; switch (wea_img) {case "qing": //晴天 result=R.mipmap.sun; break; case "yin"://阴天 result=R.mipmap.yin; break; case "yu"://雨天 result=R.mipmap.yu; break; case "yun"://多云 result=R.mipmap.yun; break; case "bingbao"://冰雹 result=R.mipmap.bingbao; break; case "wu"://雾 result=R.mipmap.wu; break; case "shachen"://沙尘暴 result=R.mipmap.shachen; break; case "lei"://雷 result=R.mipmap.lei; break; case "xue"://雪 result=R.mipmap.xue; break; default://如果都不是则显示晴 result=R.mipmap.sun; break; } return result; }

public class WeatherAdapter extends RecyclerView.Adapter {private Context context; //上下文 private ListtimeBean; //天气信息public WeatherAdapter(Context context, List timeBean) {this.context = context; this.timeBean = timeBean; } @NonNull @Override//创建ViewHolder public WeatherViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view= LayoutInflater.from(context).inflate(R.layout.recylerview_item,parent,false); WeatherViewHolder weatherViewHolder=new WeatherViewHolder(view); return weatherViewHolder; } @Override//绑定ViewHolder，显示数据 public void onBindViewHolder(@NonNull WeatherViewHolder holder, int position) {Hours hoursBean = timeBean.get(position); //根据位置获取该小时天气信息并显示 holder.timeTv.setText(hoursBean.getHours()); holder.timeWeatherTv.setText(hoursBean.getWea()); holder.timeTempTv.setText(hoursBean.getTem()); holder.timeWindTv.setText(hoursBean.getWin()+" "+hoursBean.getWin_speed()); }@Override//获取条目个数 public int getItemCount() {return timeBean.size(); } //ViewHolder class WeatherViewHolder extends RecyclerView.ViewHolder {TextView timeTv; TextView timeTempTv; TextView timeWeatherTv; TextView timeWindTv; public WeatherViewHolder(@NonNull View itemView) { //对象与控件绑定 super(itemView); timeTv = itemView.findViewById(R.id.timeTv); timeTempTv = itemView.findViewById(R.id.timeTempTv); timeWeatherTv = itemView.findViewById(R.id.timeWeatherTv); timeWindTv = itemView.findViewById(R.id.timeWindTv); } } }

@Override public void onClick(View v) {switch (v.getId()){case R.id.webTv://点击"查看更多天气"，跳转到浏览器界面 Uri uri=Uri.parse("https://tianqi.qq.com/index.htm"); Intent intent=new Intent(); intent.setAction("android.intent.action.VIEW"); intent.setData(uri); startActivity(intent); break; case R.id.clotheIv://点击穿衣指数弹出对话框 showAlertDialog(clotheTitle,clotheLevel,clotheDesc); break; case R.id.UVIv://点击紫外线指数 showAlertDialog(UVTitle,UVLevel,UVDesc); break; case R.id.sportIv://点击运动指数 showAlertDialog(sportTitle,sportLevel,sportDesc); break; case R.id.carIv://点击洗车指数 showAlertDialog(carTitle,carLevel,carDesc); break; case R.id.airPollutionIv://点击空气污染指数 showAlertDialog(airTitle,airLevel,airDesc); break; case R.id.sickIv://点击血糖指数 showAlertDialog(sickTitle,sickLevel,sickDesc); break; } }

private void showAlertDialog(String title, String level, String desc) {AlertDialog.Builder builder= new AlertDialog.Builder(MainActivity.this); builder.setTitle(title).setMessage("\n"+level+"\n\n"+desc).create().show(); }

private static SQLiteDatabase db; ContentValues values=new ContentValues(); private long flag=0; public CityDBHelper(@Nullable Context context) {super(context, "city.db", null, 1); db=this.getWritableDatabase(); } @Override public void onCreate(SQLiteDatabase db) {//创建表 String sql = "create table city(id integer primary key autoincrement,city varchar(20) unique not null)"; db.execSQL(sql); } //添加数据 public boolean addCity(String city){values.put("city",city); flag=db.insert("city",null,values); return flag>0?true:false; } //根据城市名删除数据 public boolean deleteCity(String city){flag=db.delete("city","city=?",new String[]{ city}); return flag>0?true:false; } //查询全部数据 public List queryCity(){List cityList=new ArrayList<>(); Cursor cursor=db.query("city",null,null,null,null,null,null); if (cursor!=null){while (cursor.moveToNext()){String city=cursor.getString(1); cityList.add(city); } } return cityList; } //根据城市名查询数据 public boolean findCity(String city) {Cursor cursor = db.query("city", null, "city=?", new String[]{ city}, null, null, null); if (cursor != null) {while (cursor.moveToNext()) {String findCity = cursor.getString(1); Log.i("Aye",findCity+"findCity"); if (findCity != null) {return false; } else {return true; } } } return true; } @Override//更新数据库 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}

private Context context; private List cityList; public CityAdapter(Context context, List cityList) {this.context = context; this.cityList = cityList; } @Override public int getCount() { //集合条目个数 return cityList.size(); }@Override public Object getItem(int position) { //根据位置获取条目信息 return cityList.get(position); }@Override public long getItemId(int position) { //获取位置 return position; }@Override public View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewHolder=null; if (convertView==null){ //如果convertView为空则初始化并绑定 viewHolder=new ViewHolder(); convertView=View.inflate(context, R.layout.city_listview_item,null); viewHolder.cityNameTv=convertView.findViewById(R.id.cityNameTv); convertView.setTag(viewHolder); }else {viewHolder=(ViewHolder)convertView.getTag(); } //获取数据并显示 viewHolder.cityNameTv.setText(cityList.get(position)); return convertView; } class ViewHolder{TextView cityNameTv; }

//添加城市，跳转到添加城市界面 findTv.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View v) {startActivity(new Intent(CityActivity.this,AddActivity.class)); } }); //长按删除城市 showLv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {@Override public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {String deleteCity=cityList.get(position); //根据长按点击位置获取内容 //弹出对话框 AlertDialog.Builder builder= new AlertDialog.Builder(CityActivity.this); builder.setTitle("提示").setMessage("是否删除该城市天气信息？") .setNegativeButton("取消", new DialogInterface.OnClickListener() {@Override public void onClick(DialogInterface dialog, int which) {} }) .setPositiveButton("删除", new DialogInterface.OnClickListener() {@Override public void onClick(DialogInterface dialog, int which) {//调用数据库方法删除条目 flag=cityDBHelper.deleteCity(deleteCity); if (flag){Toast.makeText(CityActivity.this,"删除成功",Toast.LENGTH_SHORT).show(); initView(); //发送广播，通知更新天气数据 Intent intent=new Intent("UPDATE1"); sendBroadcast(intent); }else {Toast.makeText(CityActivity.this,"删除失败",Toast.LENGTH_SHORT).show(); } } }) .create().show(); return true; } });

private Context context; private List cityList; private CityDBHelper cityDBHelper; public AddAdapter(Context context, List cityList,CityDBHelper cityDBHelper) {this.context = context; this.cityList = cityList; this.cityDBHelper=cityDBHelper; }@NonNull @Override//创建ViewHolder public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view=View.inflate(context,R.layout.add_recylerview_item,null); ViewHolder viewHolder = new ViewHolder(view); return viewHolder; }@Override//绑定ViewHolder，显示数据，添加数据 public void onBindViewHolder(@NonNull ViewHolder holder, int position) {holder.cityTv.setText(cityList.get(position)); holder.itemView.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View v) {String clickCity=cityList.get(position); //获取点击条目信息 //判断点击条目是否为空，然后判断该城市是否已经添加到数据库中，最后判断是否添加成功 if (clickCity!=null){if (cityDBHelper.findCity(clickCity)) {if (cityDBHelper.addCity(clickCity)) {Toast.makeText(context,"添加成功",Toast.LENGTH_SHORT).show(); //发送广播，通知更新天气数据 Intent intent=new Intent("UPDATE"); context.sendBroadcast(intent); }else {Toast.makeText(context,"添加失败",Toast.LENGTH_SHORT).show(); } }else {Toast.makeText(context,"已存在该城市",Toast.LENGTH_SHORT).show(); } } } }); }@Override public int getItemCount() { //获取集合数目 return cityList.size(); } //ViewHolder class ViewHolder extends RecyclerView.ViewHolder {TextView cityTv; public ViewHolder(@NonNull View itemView) {super(itemView); cityTv=ite mView.findViewById(R.id.itemCityTv); } }

private String[] cityStrings=new String[]{ "北京","天津","哈尔滨","沈阳","石家庄", "兰州", "西安", "郑州", "太原", "长沙", "南京", "贵阳","杭州", "广州", "台北", "上海" , "重庆", "长春", "呼和浩特", "乌鲁木齐", "西宁", "银川", "济南", "合肥", "武汉", "成都", "拉萨", "昆明", "南昌", "福州", "海口", "澳门"}; cityList=new ArrayList<>(); for (int i=0; i