Android天气预报app改进版

/** * 省份 */public class Province { //省份名 private String provinceName; //省份ID private String provinceId; public String getProvinceId() {  return provinceId; } public String getProvinceName() {  return provinceName; } public void setProvinceId(String provinceId) {  this.provinceId = provinceId; } public void setProvinceName(String provinceName) {  this.provinceName = provinceName; }}

/** * Created by ZY on 2016/7/21. */public class HourlyWeather { //预测时间 private String time; //温度 private String temp; //降水概率 private String pop; //风力 private String wind; public HourlyWeather(String time, String temp, String pop, String wind) {  this.time = time;  this.temp = temp;  this.pop = pop;  this.wind = wind; } public String getTime() {  return time; } public String getTemp() {  return temp; } public String getPop() {  return pop; } public String getWind() {  return wind; }}

public class DatabaseHelper extends SQLiteOpenHelper { private final String CREATE_PROVINCE = "create table Province ("   + "provinceName text," + "provinceId text )"; private final String CREATE_CITY = "create table City("   + "cityName text," + "cityId text," + "provinceId text)"; private final String CREATE_COUNTY = "create table County("   + "countyName text," + "countyId text," + "cityId text)"; public DatabaseHelper(Context context, String DbName,       CursorFactory factory, int version) {  super(context, DbName, factory, version); } @Override public void onCreate(SQLiteDatabase db) {  db.execSQL(CREATE_PROVINCE);  db.execSQL(CREATE_CITY);  db.execSQL(CREATE_COUNTY); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { }}

public class WeatherDB { private final String DataBaseName = "ZyWeather"; private final int VERSION = 1; private SQLiteDatabase database; private static WeatherDB weatherDB; private WeatherDB(Context context) {  DatabaseHelper dataBaseHelper = new DatabaseHelper(context,    DataBaseName, null, VERSION);  database = dataBaseHelper.getWritableDatabase(); } //获取实例 public static WeatherDB getInstance(Context context) {  if (weatherDB == null) {   weatherDB = new WeatherDB(context);  }  return weatherDB; } //保存省份信息 public void saveProvinces(List<Province> provinceList) {  if (provinceList != null && provinceList.size() > 0) {   ContentValues values = new ContentValues();   for (int i = 0; i < provinceList.size(); i++) {    values.put("provinceName", provinceList.get(i).getProvinceName());    values.put("provinceId", provinceList.get(i).getProvinceId());    database.insert("Province", null, values);    values.clear();   }  } } //保存城市信息 public void saveCities(List<City> cityList) {  if (cityList != null && cityList.size() > 0) {   ContentValues values = new ContentValues();   for (int i = 0; i < cityList.size(); i++) {    values.put("cityName", cityList.get(i).getCityName());    values.put("cityId", cityList.get(i).getCityId());    values.put("provinceId", cityList.get(i).getProvinceId());    database.insert("City", null, values);    values.clear();   }  } } //保存乡村信息 public void saveCounties(List<County> countyList) {  if (countyList != null && countyList.size() > 0) {   ContentValues values = new ContentValues();   for (int i = 0; i < countyList.size(); i++) {    values.put("countyName", countyList.get(i).getCountyName());    values.put("countyId", countyList.get(i).getCountyId());    values.put("cityId", countyList.get(i).getCityId());    database.insert("County", null, values);    values.clear();   }  } } //返回所有省份信息 public List<Province> getAllProvince() {  Cursor cursor = database.query("Province", null, null, null, null, null, null);  List<Province> list = new ArrayList<>();  Province province;  if (cursor.moveToFirst()) {   do {    province = new Province();    province.setProvinceName(cursor.getString(cursor.getColumnIndex("provinceName")));    province.setProvinceId(cursor.getString(cursor.getColumnIndex("provinceId")));    list.add(province);   } while (cursor.moveToNext());  }  return list; } //返回指定省份下的所有城市 public List<City> getAllCity(String provinceId) {  List<City> list = new ArrayList<>();  City city;  Cursor cursor = database.query("City", null, "provinceId = ?", new String[]{provinceId}, null, null, null);  if (cursor.moveToFirst()) {   do {    city = new City();    city.setCityName(cursor.getString(cursor.getColumnIndex("cityName")));    city.setCityId(cursor.getString(cursor.getColumnIndex("cityId")));    city.setProvinceId(provinceId);    list.add(city);   } while (cursor.moveToNext());  }  return list; } //返回指定城市下的所有乡村 public List<County> getAllCountry(String cityId) {  List<County> list = new ArrayList<>();  Cursor cursor = database.query("County", null, "cityId=?", new String[]{cityId}, null, null, null);  County county;  if (cursor.moveToFirst()) {   do {    county = new County();    county.setCountyName(cursor.getString(cursor.getColumnIndex("countyName")));    county.setCountyId(cursor.getString(cursor.getColumnIndex("countyId")));    county.setCityId(cityId);    list.add(county);   } while (cursor.moveToNext());  }  return list; }}

public class HttpUtil { public static void sendHttpRequest(final String address, final HttpCallbackListener listener) {  new Thread(new Runnable() {   public void run() {    HttpURLConnection connection = null;    try {     URL url = new URL(address);     connection = (HttpURLConnection) url.openConnection();     connection.setRequestMethod("GET");     connection.setConnectTimeout(8000);     connection.setReadTimeout(8000);     connection.setRequestProperty("apikey", "填入自己的apikey");     connection.connect();     InputStream inputStream = connection.getInputStream();     InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "UTF-8");     BufferedReader bufferedReader = new BufferedReader(inputStreamReader);     StringBuilder response = new StringBuilder();     String line;     while ((line = bufferedReader.readLine()) != null) {      response.append(line);     }     if (listener != null) {      listener.onFinish(response.toString());     }    } catch (Exception e) {     if (listener != null) {      listener.onError(e);     }    } finally {     if (connection != null) {      connection.disconnect();     }    }   }  }).start(); }}

public interface HttpCallbackListener { void onFinish(String response); void onError(Exception e);}

public class Utility { // 保存服务器返回的省级数据 public static boolean saveProvincesResponse(WeatherDB weatherDB, String response) {  if (!TextUtils.isEmpty(response)) {   String[] allProvinces = response.split(",");   if (allProvinces != null && allProvinces.length > 0) {    Province province;    List<Province> provinceList = new ArrayList<>();    for (String p : allProvinces) {     String[] array = p.split("//|");     province = new Province();     province.setProvinceId(array[0]);     province.setProvinceName(array[1]);     provinceList.add(province);    }    weatherDB.saveProvinces(provinceList);    return true;   }  }  return false; } // 保存服务器返回的市级数据 public static boolean saveCitiesResponse(WeatherDB weatherDB, String response, String provinceId) {  if (!TextUtils.isEmpty(response)) {   String[] allCities = response.split(",");   if (allCities != null && allCities.length > 0) {    City city;    List<City> cityList = new ArrayList<>();    for (String c : allCities) {     String[] array = c.split("//|");     city = new City();     city.setCityId(array[0]);     city.setCityName(array[1]);     city.setProvinceId(provinceId);     cityList.add(city);    }    weatherDB.saveCities(cityList);    return true;   }  }  return false; } // 保存服务器返回的县级数据 public static boolean saveCountiesResponse(WeatherDB weatherDB, String response, String cityId) {  if (!TextUtils.isEmpty(response)) {   String[] allCounties = response.split(",");   if (allCounties != null && allCounties.length > 0) {    County county;    List<County> countyList = new ArrayList<>();    for (String c : allCounties) {     String[] array = c.split("//|");     county = new County();     county.setCountyId(array[0]);     county.setCountyName(array[1]);     county.setCityId(cityId);     countyList.add(county);    }    weatherDB.saveCounties(countyList);    return true;   }  }  return false; } // 处理服务器返回的json数据 public static void handleWeatherResponse(Context context, String response) {  try {   JSONObject jsonobject = new JSONObject(response);   JSONArray title = jsonobject.getJSONArray("HeWeather data service 3.0");   JSONObject first_object = (JSONObject) title.get(0);   JSONObject basic = (JSONObject) first_object.get("basic");   //更新时间   JSONObject update = (JSONObject) basic.get("update");   JSONArray daily_forecast = (JSONArray) first_object.get("daily_forecast");   JSONObject daily_forecast_first = (JSONObject) daily_forecast.get(0);   JSONObject cond = (JSONObject) daily_forecast_first.get("cond");   //温度   JSONObject temp = (JSONObject) daily_forecast_first.get("tmp");   JSONObject astro = (JSONObject) daily_forecast_first.get("astro");   JSONObject wind = (JSONObject) daily_forecast_first.get("wind");   JSONArray hourly_forecast = (JSONArray) first_object.get("hourly_forecast");   WeatherActivity.weatherList.clear();   for (int i = 0; i < hourly_forecast.length(); i++) {    JSONObject json = hourly_forecast.getJSONObject(i);    JSONObject json_wind = (JSONObject) json.get("wind");    String date = json.getString("date");    String[] array = date.split(" ");    String dir = json_wind.getString("dir");    String sc = json_wind.getString("sc");    String hourly_clock = array[1];    String hourly_temp = "温度：" + json.getString("tmp") + "℃";    String hourly_pop = "降水概率：" + json.getString("pop");    String hourly_wind = "风力：" + dir + " " + sc + "级";    HourlyWeather weather = new HourlyWeather(hourly_clock, hourly_temp, hourly_pop, hourly_wind);    WeatherActivity.weatherList.add(weather);   }   //日出   String sunriseTime = astro.getString("sr");   //日落   String sunsetTime = astro.getString("ss");   //白天天气   String dayWeather = cond.getString("txt_d");   //夜晚天气   String nightWeather = cond.getString("txt_n");   //风力   String windText = wind.getString("dir") + " " + wind.getString("sc") + "级";   //降水概率   String pop = daily_forecast_first.getString("pop");   //温度   String tempText = temp.getString("min") + "℃~" + temp.getString("max") + "℃";   //更新时间   String updateTime = update.getString("loc");   //城市名   String cityName = basic.getString("city");   saveWeatherInfo(context, cityName, sunriseTime, sunsetTime, dayWeather, nightWeather, windText, pop, tempText, updateTime);  } catch (Exception e) {   e.printStackTrace();  } } private static void saveWeatherInfo(Context context, String cityName,          String sunriseTime, String sunsetTime, String dayWeather, String nightWeather,          String windText, String pop, String tempText, String updateTime) {  SharedPreferences.Editor editor = context.getSharedPreferences("Weather", Context.MODE_PRIVATE).edit();  editor.putString("cityName", cityName);  editor.putString("sunriseTime", sunriseTime);  editor.putString("sunsetTime", sunsetTime);  editor.putString("dayWeather", dayWeather);  editor.putString("nightWeather", nightWeather);  editor.putString("wind", windText);  editor.putString("pop", pop);  editor.putString("temp", tempText);  editor.putString("updateTime", updateTime);  editor.commit(); }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <!-- 时间 --> <TextView  android:id="@+id/forecastTime"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="2"  android:gravity="center"  android:textSize="20sp"  android:textStyle="bold" /> <LinearLayout  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="5"  android:orientation="vertical">  <!-- 温度 降水概率 -->  <LinearLayout   android:layout_width="match_parent"   android:layout_height="0dp"   android:layout_weight="1"   android:gravity="center"   android:orientation="horizontal">   <!-- 温度 -->   <TextView    android:id="@+id/forecastTemp"    android:layout_width="0dp"    android:layout_height="match_parent"    android:layout_weight="1"    android:gravity="center" />   <!-- 下雨概率 -->   <TextView    android:id="@+id/forecastPop"    android:layout_width="0dp"    android:layout_height="match_parent"    android:layout_weight="1"    android:gravity="center" />  </LinearLayout>  <!-- 风力 -->  <TextView   android:id="@+id/forecastWind"   android:layout_width="match_parent"   android:layout_height="0dp"   android:layout_weight="1"   android:gravity="center" /> </LinearLayout></LinearLayout>

public class WeatherAdapter extends ArrayAdapter<HourlyWeather> { private int resourceId; private Context context; public WeatherAdapter(Context context, int textViewResourceId, List<HourlyWeather> objects) {  super(context, textViewResourceId, objects);  this.context = context;  this.resourceId = textViewResourceId; } public View getView(int position, View convertView, ViewGroup parent) {  HourlyWeather weather = getItem(position);  View view = LayoutInflater.from(context).inflate(resourceId, null);  TextView forecastTime = (TextView) view.findViewById(R.id.forecastTime);  TextView forecastTemp = (TextView) view.findViewById(R.id.forecastTemp);  TextView forecastPop = (TextView) view.findViewById(R.id.forecastPop);  TextView forecastWind = (TextView) view.findViewById(R.id.forecastWind);  forecastTime.setText(weather.getTime());  forecastTemp.setText(weather.getTemp());  forecastPop.setText(weather.getPop());  forecastWind.setText(weather.getWind());  return view; }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <RelativeLayout  android:layout_width="match_parent"  android:layout_height="50dp">  <TextView   android:id="@+id/title"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_centerInParent="true"   android:textSize="24sp" /> </RelativeLayout> <ListView  android:id="@+id/listView"  android:layout_width="match_parent"  android:layout_height="match_parent" /></LinearLayout>

public class ChooseAreaActivity extends AppCompatActivity { // 标记当前列表为省份 public static final int LEVEL_PROVINCE = 0; // 标记当前列表为城市 public static final int LEVEL_CITY = 1; // 标记当前列表为县 public static final int LEVEL_COUNTY = 2; // 进度对话框 private ProgressDialog progressDialog; // 标题栏 private TextView titleText; // 数据列表 private ListView listView; // 列表数据 private ArrayAdapter<String> adapter; // 数据库 private WeatherDB weatherDB; private List<String> dataList; private List<Province> provinceList; private List<City> cityList; private List<County> countyList; //选择的省份 private Province selectedProvince; //选择的城市 private City selectedCity; //当前选择的列表类型 private int currentLevel; //标记是否从WeatherActivity跳转而来的 private boolean isFromWeatherActivity; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  isFromWeatherActivity = getIntent().getBooleanExtra("ChooseArea", false);  SharedPreferences sharedPreferences = getSharedPreferences("Weather", Context.MODE_PRIVATE);  // 如果country已选择且本Activity不是从天气界面启动而来的，则直接跳转到WeatherActivity  if (!TextUtils.isEmpty(sharedPreferences.getString("CountyName", "")) && !isFromWeatherActivity) {   Intent intent = new Intent(this, WeatherActivity.class);   startActivity(intent);   finish();   return;  }  setContentView(R.layout.activity_choose_area);  if (getSupportActionBar() != null) {   getSupportActionBar().hide();  }  listView = (ListView) findViewById(R.id.listView);  titleText = (TextView) findViewById(R.id.title);  dataList = new ArrayList<>();  adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, dataList);  listView.setAdapter(adapter);  weatherDB = WeatherDB.getInstance(this);  listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> arg0, View arg1, int index, long arg3) {    if (currentLevel == LEVEL_PROVINCE) {     selectedProvince = provinceList.get(index);     queryCities();    } else if (currentLevel == LEVEL_CITY) {     selectedCity = cityList.get(index);     queryCounties();    } else if (currentLevel == LEVEL_COUNTY) {     //当点击到县列表时，就利用Intent跳转到天气信息界面     String countyName = countyList.get(index).getCountyName();     Intent intent = new Intent(ChooseAreaActivity.this, WeatherActivity.class);     intent.putExtra("CountyName", countyName);     startActivity(intent);     finish();    }   }  });  queryProvinces(); } private void queryProvinces() {  showProgressDialog();  provinceList = weatherDB.getAllProvince();  if (provinceList.size() > 0) {   dataList.clear();   for (Province province : provinceList) {    dataList.add(province.getProvinceName());   }   adapter.notifyDataSetChanged();   listView.setSelection(0);   titleText.setText("中国");   currentLevel = LEVEL_PROVINCE;   closeProgressDialog();  } else {   queryFromServer(null, "province");  } } private void queryCities() {  showProgressDialog();  cityList = weatherDB.getAllCity(selectedProvince.getProvinceId());  if (cityList.size() > 0) {   dataList.clear();   for (City city : cityList) {    dataList.add(city.getCityName());   }   adapter.notifyDataSetChanged();   listView.setSelection(0);   titleText.setText(selectedProvince.getProvinceName());   currentLevel = LEVEL_CITY;   closeProgressDialog();  } else {   queryFromServer(selectedProvince.getProvinceId(), "city");  } } private void queryCounties() {  showProgressDialog();  countyList = weatherDB.getAllCountry(selectedCity.getCityId());  if (countyList.size() > 0) {   dataList.clear();   for (County county : countyList) {    dataList.add(county.getCountyName());   }   adapter.notifyDataSetChanged();   listView.setSelection(0);   titleText.setText(selectedCity.getCityName());   currentLevel = LEVEL_COUNTY;   closeProgressDialog();  } else {   queryFromServer(selectedCity.getCityId(), "county");  } } private void queryFromServer(final String code, final String type) {  String address;  // code不为空  if (!TextUtils.isEmpty(code)) {   address = "http://www.weather.com.cn/data/list3/city" + code + ".xml";  } else {   address = "http://www.weather.com.cn/data/list3/city.xml";  }  HttpUtil.sendHttpRequest(address, new HttpCallbackListener() {   @Override   public void onFinish(String response) {    boolean result = false;    if ("province".equals(type)) {     result = Utility.saveProvincesResponse(weatherDB, response);    } else if ("city".equals(type)) {     result = Utility.saveCitiesResponse(weatherDB, response, selectedProvince.getProvinceId());    } else if ("county".equals(type)) {     result = Utility.saveCountiesResponse(weatherDB, response, selectedCity.getCityId());    }    if (result) {     runOnUiThread(new Runnable() {      @Override      public void run() {       if ("province".equals(type)) {        queryProvinces();       } else if ("city".equals(type)) {        queryCities();       } else if ("county".equals(type)) {        queryCounties();       }      }     });    }   }   @Override   public void onError(Exception e) {    runOnUiThread(new Runnable() {     @Override     public void run() {      Toast.makeText(ChooseAreaActivity.this, "加载失败", Toast.LENGTH_SHORT).show();     }    });   }  });  closeProgressDialog(); } private void showProgressDialog() {  if (progressDialog == null) {   progressDialog = new ProgressDialog(this);   progressDialog.setMessage("正在加载……");   progressDialog.setCanceledOnTouchOutside(false);  }  progressDialog.show(); } private void closeProgressDialog() {  if (progressDialog != null) {   progressDialog.dismiss();  } } @Override public void onBackPressed() {  if (currentLevel == LEVEL_COUNTY) {   queryCities();  } else if (currentLevel == LEVEL_CITY) {   queryProvinces();  } else {   if (isFromWeatherActivity) {    Intent intent = new Intent(this, WeatherActivity.class);    startActivity(intent);   }   finish();  } }}

// 城市切换按钮 private Button citySwitch; // 刷新数据按钮 private Button weatherRefresh; // 城市名 private TextView cityName; // 白天夜晚天气描叙 private TextView DayNightWeather; // 温度 private TextView temp; // 日出时间 private TextView sunriseTime; // 日落时间 private TextView sunsetTime; // 风力 private TextView wind; // 降水概率 private TextView pop; // 发布时间 private TextView updateTime; // 今日天气预测列表 private ListView listview; public static List<HourlyWeather> weatherList = new ArrayList<>(); private SharedPreferences sharedPreferences; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.weather);  if (getSupportActionBar() != null) {   getSupportActionBar().hide();  }  init(); } private void init() {  citySwitch = (Button) findViewById(R.id.citySwitch);  weatherRefresh = (Button) findViewById(R.id.weatherRefresh);  citySwitch.setOnClickListener(this);  weatherRefresh.setOnClickListener(this);  cityName = (TextView) findViewById(R.id.cityName);  DayNightWeather = (TextView) findViewById(R.id.DayNightWeather);  temp = (TextView) findViewById(R.id.temp);  sunriseTime = (TextView) findViewById(R.id.sunriseTime);  sunsetTime = (TextView) findViewById(R.id.sunsetTime);  wind = (TextView) findViewById(R.id.wind);  pop = (TextView) findViewById(R.id.pop);  updateTime = (TextView) findViewById(R.id.updateTime);  listview = (ListView) findViewById(R.id.hourlyForecast);  sharedPreferences = getSharedPreferences("Weather", Context.MODE_PRIVATE);  String countyName = getIntent().getStringExtra("CountyName");  // 当countyName不为空  if (!TextUtils.isEmpty(countyName)) {   SharedPreferences.Editor editor = sharedPreferences.edit();   editor.putString("CountyName", countyName);   editor.commit();  } else {   countyName = sharedPreferences.getString("CountyName", "");  }  weatherRefresh.setText("同步中……");  queryFromServer(countyName); } @Override public void onClick(View view) {  switch (view.getId()) {   case R.id.citySwitch:    Intent intent = new Intent(this, ChooseAreaActivity.class);    intent.putExtra("ChooseArea", true);    startActivity(intent);    finish();    break;   case R.id.weatherRefresh:    weatherRefresh.setText("同步中……");    String countyName = sharedPreferences.getString("CountyName", "");    if (!TextUtils.isEmpty(countyName)) {     queryFromServer(countyName);    }    break;  } } private void queryFromServer(final String countyName) {  try {   String url = "http://apis.baidu.com/heweather/weather/free?city=";   String name = new String(countyName.getBytes("UTF-8"), "iso-8859-1");   HttpUtil.sendHttpRequest(url + name, new HttpCallbackListener() {    @Override    public void onFinish(String response) {     Utility.handleWeatherResponse(WeatherActivity.this, response);     runOnUiThread(new Runnable() {      @Override      public void run() {       showWeather();      }     });    }    @Override    public void onError(Exception e) {     runOnUiThread(new Runnable() {      @Override      public void run() {       Toast.makeText(WeatherActivity.this, "同步失败", Toast.LENGTH_LONG).show();       weatherRefresh.setText("更新数据");      }     });    }   });  } catch (Exception e) {   e.printStackTrace();  } } private void showWeather() {  cityName.setText(sharedPreferences.getString("cityName", "未知"));  sunriseTime.setText("日出：" + sharedPreferences.getString("sunriseTime", "未知"));  sunsetTime.setText("日落：" + sharedPreferences.getString("sunsetTime", "未知"));  DayNightWeather.setText("日：" + sharedPreferences.getString("dayWeather", "未知") + " 夜：" + sharedPreferences.getString("nightWeather", "未知"));  temp.setText("温度：" + sharedPreferences.getString("temp", "未知"));  wind.setText("风力：" + sharedPreferences.getString("wind", "未知"));  pop.setText("降水概率：" + sharedPreferences.getString("pop", "未知"));  updateTime.setText("发布时间:" + sharedPreferences.getString("updateTime", "未知"));  WeatherAdapter adapter = new WeatherAdapter(this, R.layout.hourly_weather, weatherList);  listview.setAdapter(adapter);  Toast.makeText(WeatherActivity.this, "已经是最新数据了", Toast.LENGTH_SHORT).show();  weatherRefresh.setText("更新数据"); }}