coolweather_app_开发思路

src/main

assets

litepal.xml

将db中3个实体类添加到映射列表

java/com.example.coolweather

db

City

County

Province

数据库表结构，市、县、省声明字段，生成getter和setter

子主题

gson

AQI

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:28 */public class AQI { public AQICity city; public class AQICity{ @SerializedName("aqi") public String aqi; @SerializedName("pm25") public String pm25; }}

Basic

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:27 */public class Basic { /** * 由于JSON中的一些字段不太适合直接作为Java字段命名，这里使用@SerializedName朱姐的方式让JSON字段和java字段建立映射关系 */ @SerializedName("city") public String cityName; @SerializedName("id") public String weatherId; public Update update; public class Update{ @SerializedName("loc") public String updateTime; }}

Forecast

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:28 */public class Forecast { @SerializedName("date") public String date; @SerializedName("tmp") public Temperature temperature; @SerializedName("cond") public More more; public class Temperature{ @SerializedName("max") public String max; @SerializedName("min") public String min; } public class More{ @SerializedName("txt_d") public String info; }}

Now

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:28 */public class Now { @SerializedName("tmp") public String temperature; @SerializedName("cond") public More more; public class More { @SerializedName("txt") public String info; }}

Suggestion

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:28 */public class Suggestion { @SerializedName("comf") public Comfort comfort; @SerializedName("cw") public CarWash carWash; @SerializedName("sport") public Sport sport; public class Comfort{ @SerializedName("txt") public String info; } public class CarWash{ @SerializedName("txt") public String info; } public class Sport{ @SerializedName("txt") public String info; }}

返回天气信息的格式

Weather

package com.example.coolweather.gson;import com.google.gson.annotations.SerializedName;import java.util.List;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-03 21:40 */public class Weather { public String status; public Basic basic; public AQI aqi; public Now now; public Suggestion suggestion; @SerializedName("daily_forecast") public List<Forecast> forecastList;}

创建一个总的实体类来引用以上的各个实体类。

service

AutoUpdateService

package com.example.coolweather.service;import android.app.AlarmManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.content.SharedPreferences;import android.os.IBinder;import android.os.SystemClock;import android.preference.PreferenceManager;import com.example.coolweather.gson.Weather;import com.example.coolweather.util.HttpUtil;import com.example.coolweather.util.Utility;import org.jetbrains.annotations.NotNull;import java.io.IOException;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;public class AutoUpdateService extends Service { public AutoUpdateService() { } @Override public IBinder onBind(Intent intent) { // TODO: Return the communication channel to the service. // throw new UnsupportedOperationException("Not yet implemented"); return null; } @Override public int onStartCommand(Intent intent, int flags, int startId) { updateWeather(); //更新天气 updateBingPic(); //更新图片 AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE); //定时闹钟 int anHour = 8 * 60 * 60 * 1000; //更新时间8个小时的毫米数 long triggerAtTime = SystemClock.elapsedRealtime() + anHour; Intent i = new Intent(this, AutoUpdateService.class); PendingIntent pi = PendingIntent.getService(this, 0, i, 0); manager.cancel(pi); manager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi); return super.onStartCommand(intent, flags, startId); } /** * 更新天气信息 */ private void updateWeather() { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); String weatherString = prefs.getString("weather", null); if (weatherString != null) { // 有缓存时直接解析天气数据 Weather weather = Utility.handleWeatherResponse(weatherString); String weatherId = weather.basic.weatherId; String weatherUrl = "http://guolin.tech/api/weather?cityid=" + weatherId + "&key=ca5202ab136049029e17824f7357f163"; HttpUtil.sendOkHttpRequest(weatherUrl, new Callback() { @Override public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException { String responseText = response.body().string(); Weather weather = Utility.handleWeatherResponse(responseText); if (weather != null && "ok".equals(weather.status)) { SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(AutoUpdateService.this).edit(); editor.putString("weather", responseText); editor.apply(); } } @Override public void onFailure(@NotNull Call call, @NotNull IOException e) { e.printStackTrace(); } }); } } /** * 更新必应每日一图 */ private void updateBingPic() { String requestBingPic = "http://guolin.tech/api/bing_pic"; HttpUtil.sendOkHttpRequest(requestBingPic, new Callback() { @Override public void onFailure(@NotNull Call call, @NotNull IOException e) { e.printStackTrace(); } @Override public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException { String bingPic = response.body().string(); SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(AutoUpdateService.this).edit(); editor.putString("bing_pic", bingPic); editor.apply(); } }); }}

后台自动更新天气和图片服务

util

HttpUtil

Utility

package com.example.coolweather.util;import android.text.TextUtils;import com.example.coolweather.db.City;import com.example.coolweather.db.County;import com.example.coolweather.db.Province;import com.example.coolweather.gson.Weather;import com.google.gson.Gson;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;public class Utility { /** * 解析和处理服务器返回省级数据 * @param response * @return */ public static boolean handleProvinceResponse(String response) { if (!TextUtils.isEmpty(response)) { try { //json的对象的数组，用来接收传回的多个省份的数据 JSONArray allProvince = new JSONArray(response); for (int i = 0; i < allProvince.length(); i++) { //取出每一个省份 JSONObject provinceObject = allProvince.getJSONObject(i); Province province = new Province(); //解析出省份的name并将其赋值给province对象 province.setProvinceName(provinceObject.getString("name")); //解析出省份的id并将其赋值给province对象 province.setProvinceCode(provinceObject.getInt("id")); //将这一个省份保存到表中 province.save(); } //处理成功返回真 return true; } catch (JSONException e) { e.printStackTrace(); } } //处理成功返回假 return false; } /** * 解析和处理服务器返回市级数据 * @param response * @param provinceId * @return */ public static boolean handleCityResponse(String response,int provinceId) { if (!TextUtils.isEmpty(response)) { try { JSONArray allCities = new JSONArray(response); for (int i = 0; i < allCities.length(); i++) { JSONObject cityObject = allCities.getJSONObject(i); City city = new City(); city.setCityName(cityObject.getString("name")); city.setCityCode(cityObject.getInt("id")); city.setProvinceId(provinceId); city.save(); } return true; } catch (JSONException e) { e.printStackTrace(); } } return false; } /** * 解析和处理服务器返回县级数据 * @param response * @param cityId * @return */ public static boolean handleCuntyoResponse(String response, int cityId) { if (!TextUtils.isEmpty(response)) { try { JSONArray allCountys = new JSONArray(response); for (int i = 0; i < allCountys.length(); i++) { JSONObject countyObject = allCountys.getJSONObject(i); County county = new County(); county.setCountyName(countyObject.getString("name")); county.setWeatherId(countyObject.getString("weather_id")); county.setCityId(cityId); county.save(); } return true; } catch (JSONException e) { e.printStackTrace(); } } return false; } /** * 将返回的JSON数据解析成Weather实体类 * @param response * @return */ public static Weather handleWeatherResponse(String response){ try { JSONObject jsonObject = new JSONObject(response); JSONArray jsonArray = jsonObject.getJSONArray("HeWeather"); String weatherContent = jsonArray.getJSONObject(0).toString(); //调用fromJson()方法直接将JSON数据转成Weather对象 return new Gson().fromJson(weatherContent, Weather.class); }catch (Exception e){ e.printStackTrace(); } return null; }}

和服务器进行交互

ChooseAreFragment

package com.example.coolweather;import android.app.ProgressDialog;import android.content.Intent;import android.os.Bundle;import android.support.v4.app.Fragment;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;import com.example.coolweather.db.City;import com.example.coolweather.db.County;import com.example.coolweather.db.Province;import com.example.coolweather.util.HttpUtil;import com.example.coolweather.util.Utility;import org.litepal.LitePal;import java.io.IOException;import java.util.ArrayList;import java.util.List;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;public class ChooseAreFragment extends Fragment { public static final int LEVEL_PROVINCE = 0; public static final int LEVEL_CITY = 1; public static final int LEVEL_COUNTY = 2; private ProgressDialog progressDialog; private TextView titleText; private Button backButton; private ListView listView; private ArrayAdapter<String> adapter;//适配器，与ListView配合使用 private List<String> dataList = new ArrayList<>();//动态数组 /** * 省列表 */ private List<Province> provinceList; /** * 市列表 */ private List<City> cityList; /** * 县列表 */ private List<County> countyList; /** * 选中的省份 */ private Province selectedProvince; /** * 选中的城市 */ private City selectedCity; /** * 当前选中的级别 */ private int currentLevel; /** * onCreateView()方法中获取到一些控件的实例， * 初始化了ArrayAdapter，将其设置为ListView的适配器。 * @param inflater * @param countainer * @param savedInstanceState * @return */ @Override public View onCreateView(LayoutInflater inflater, ViewGroup countainer, Bundle savedInstanceState) { /** * 【LayoutInflater】其实是在res/layout/下找到xml布局文件，并且将其实例化， * 对于一个没有被载入或者想要动态载入的界面，都需要使用LayoutInflater.inflate()来载入； */ View view = inflater.inflate(R.layout.choose_area, countainer, false); titleText = (TextView) view.findViewById(R.id.title_text); backButton = (Button) view.findViewById(R.id.back_button); listView = (ListView) view.findViewById(R.id.list_view); adapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, dataList); //载入listView listView.setAdapter(adapter); return view; } /** * onActivityCreated()方法中设置ListView和Button的点击事件， * 完成了基本的初始化操作，调用queryProvinces()方法，加载省级数据。 * @param savedInstanceState */ @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); //对列表设置监听事件 listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (currentLevel == LEVEL_PROVINCE) { //记住选中的省份 selectedProvince = provinceList.get(position); //显示出省份对应下city的界面 queryCities(); } else if (currentLevel == LEVEL_CITY) { //记住选中的City selectedCity = cityList.get(position); //切换到相应的county界面 queryCounties(); } else if (currentLevel == LEVEL_COUNTY) { String weatherId = countyList.get(position).getWeatherId(); if (getActivity() instanceof MainActivity){ Intent intent = new Intent(getActivity(),WeatherActivity.class); intent.putExtra("weather_id",weatherId); Log.d(weatherId, "weatherId: "); startActivity(intent); getActivity().finish(); }else if (getActivity() instanceof WeatherActivity){ WeatherActivity activity = (WeatherActivity) getActivity(); activity.drawerLayout.closeDrawers(); activity.swipeRefresh.setRefreshing(true); activity.requestWeather(weatherId); } } } }); //为返回按钮注册监听事件 backButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //若在county切换到City if (currentLevel == LEVEL_COUNTY) { queryCities(); } else if (currentLevel == LEVEL_CITY) { //若在City切换到province queryProvinces(); } } }); //初始状态下显示province queryProvinces(); } /** * 查询全国所有的省，优先从数据库查询，如果没有查询到再去服务器上查询 */ private void queryProvinces() { //设置标题栏 titleText.setText("中国"); //隐藏返回按钮 backButton.setVisibility(View.GONE); //在数据库中查询所有省份 provinceList = LitePal.findAll(Province.class); if (provinceList.size() > 0) { dataList.clear(); for (Province province : provinceList) { dataList.add(province.getProvinceName()); } //更新适配器中的内容，变为省份数据 adapter.notifyDataSetChanged(); listView.setSelection(0); currentLevel = LEVEL_PROVINCE; } else { //从服务器中查询 String address = "http://guolin.tech/api/china"; queryFromServer(address, "province"); } } private void queryCities() { //设置标题栏 titleText.setText(selectedProvince.getProvinceName()); //设置返回按钮可见 backButton.setVisibility(View.VISIBLE); //在数据库中查询对应的City数据 cityList = LitePal.where("provinceid=?", String.valueOf(selectedProvince.getId())).find(City.class); if (cityList.size() > 0) { dataList.clear(); for (City city : cityList) { dataList.add(city.getCityName()); } adapter.notifyDataSetChanged(); listView.setSelection(0); currentLevel = LEVEL_CITY; } else { int provinceCode = selectedProvince.getProvinceCode(); String address = "http://guolin.tech/api/china/" + provinceCode; queryFromServer(address, "city"); } } private void queryCounties() { titleText.setText(selectedCity.getCityName()); backButton.setVisibility(View.VISIBLE); countyList = LitePal.where("cityid = ?", String.valueOf(selectedCity.getId())).find(County.class); if (countyList.size() > 0) { dataList.clear(); for (County county : countyList) { dataList.add(county.getCountyName()); } adapter.notifyDataSetChanged(); listView.setSelection(0); currentLevel = LEVEL_COUNTY; } else { int provinceCode = selectedProvince.getProvinceCode(); int cityCode = selectedCity.getCityCode(); String address = "http://guolin.tech/api/china/" + provinceCode + "/" + cityCode; queryFromServer(address, "county"); } } /** * 根据传入的地址和类型从服务器上查询省市县数据 * 调用HttpUtil中的sendOkHttpRequest()方法向服务器发送请求，响应的数据回调到onResponse(）方法中， * 然后调用Utility中的handleProvincesResponse()方法解析和处理服务器返回的数据，然后将其存储到数据库中。 * 最后再次调用queryProvinces()方法重新加载省级数据。 * 因为queryProvinces()涉及UI操作，则须在主线程中调用，因此借助runOnUiThread()方法从子线程切换到主线程。 * @param address * @param type */ private void queryFromServer(String address, final String type) { //未查出之前显示出进度条框 showProgressDialog(); HttpUtil.sendOkHttpRequest(address, new Callback() { @Override public void onFailure(Call call, IOException e) { //通过runOnUiThread回到主线程处理逻辑 getActivity().runOnUiThread(new Runnable() { @Override public void run() { closeProgressDialog(); Toast.makeText(getContext(), "加载失败", Toast.LENGTH_SHORT).show(); } }); } @Override public void onResponse(Call call, Response response) throws IOException { String responseText = response.body().string(); boolean result = false; if ("province".equals(type)) { result = Utility.handleProvinceResponse(responseText); } else if ("city".equals(type)) { result = Utility.handleCityResponse(responseText, selectedProvince.getId()); } else if ("county".equals(type)) { result = Utility.handleCuntyoResponse(responseText, selectedCity.getId()); } if (result) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { closeProgressDialog(); if ("province".equals(type)) { queryProvinces(); } else if ("city".equals(type)) { queryCities(); } else if ("county".equals(type)) { queryCounties(); } } }); } } }); } /** * 显示进度对话框 */ private void showProgressDialog() { if (progressDialog == null) { progressDialog = new ProgressDialog(getActivity()); progressDialog.setMessage("正在加载"); progressDialog.setCanceledOnTouchOutside(false); } progressDialog.show(); } /** * 关闭进度对话框 */ private void closeProgressDialog() { if (progressDialog != null) { progressDialog.dismiss(); } }}

遍历省市县数据碎片内有跳转到天气界面

MainActivity

package com.example.coolweather;import android.content.Intent;import android.content.SharedPreferences;import android.preference.PreferenceManager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); if (prefs.getString("weather",null) != null){ Intent intent = new Intent(this,WeatherActivity.class); startActivity(intent); finish(); } }}

WeatherActivity

package com.example.coolweather;import android.content.Intent;import android.content.SharedPreferences;import android.graphics.Color;import android.os.Build;import android.os.Bundle;import android.preference.PreferenceManager;import android.support.v4.view.GravityCompat;import android.support.v4.widget.DrawerLayout;import android.support.v4.widget.SwipeRefreshLayout;import android.support.v7.app.AppCompatActivity;import android.view.LayoutInflater;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ScrollView;import android.widget.TextView;import android.widget.Toast;import com.bumptech.glide.Glide;import com.example.coolweather.gson.Forecast;import com.example.coolweather.gson.Weather;import com.example.coolweather.service.AutoUpdateService;import com.example.coolweather.util.HttpUtil;import com.example.coolweather.util.Utility;import org.jetbrains.annotations.NotNull;import java.io.IOException;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;/** * 项目名称：CoolWeather * 创建人：lita * 创建时间：2019-07-04 11:35 */public class WeatherActivity extends AppCompatActivity { private ScrollView weatherLayout; private TextView titleCity; private TextView titleUpdateTime; private TextView degreeText; private TextView weatherInfoText; private LinearLayout forecastLayout; private TextView aqiText; private TextView pm25Text; private TextView comfortText; private TextView carWashText; private TextView sportText; private ImageView bingPicImg; public SwipeRefreshLayout swipeRefresh; public DrawerLayout drawerLayout; private Button navButton; @Override protected void onCreate(Bundle saveInstanceState) { super.onCreate(saveInstanceState); if (Build.VERSION.SDK_INT >= 21) { //调用getWindow().getDecorView()拿到当前活动的DecorView View decorView = getWindow().getDecorView(); //改变系统的UI显示，传入的两个值表示活动的布局会显示在状态栏上面 decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE); //将状态栏设置成透明色 getWindow().setStatusBarColor(Color.TRANSPARENT); } setContentView(R.layout.activity_weather); // 初设化控件 weatherLayout = (ScrollView) findViewById(R.id.weather_layout); titleCity = (TextView) findViewById(R.id.title_city); titleUpdateTime = (TextView) findViewById(R.id.title_update_time); degreeText = (TextView) findViewById(R.id.degree_text); weatherInfoText = (TextView) findViewById(R.id.weather_info_text); forecastLayout = (LinearLayout) findViewById(R.id.forecast_layout); aqiText = (TextView) findViewById(R.id.aqi_text); pm25Text = (TextView) findViewById(R.id.pm25_text); comfortText = (TextView) findViewById(R.id.comfort_text); carWashText = (TextView) findViewById(R.id.car_wash_text); sportText = (TextView) findViewById(R.id.sport_text); bingPicImg = (ImageView) findViewById(R.id.bing_pic_img); swipeRefresh = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh); drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); navButton = (Button) findViewById(R.id.nav_button); swipeRefresh.setColorSchemeResources(R.color.colorPrimary); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); String weatherString = prefs.getString("weather", null); final String weatherId; if (weatherString != null) { // 有缓存时直接解析天气数据 Weather weather = Utility.handleWeatherResponse(weatherString); weatherId = weather.basic.weatherId; showWeatherInfo(weather); } else { // 无缓冲时去服务器查询天气 weatherId = getIntent().getStringExtra("weather_id"); weatherLayout.setVisibility(View.INVISIBLE); requestWeather(weatherId); } swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { requestWeather(weatherId); } }); String bingPic = prefs.getString("bing_pic", null); if (bingPic != null) { Glide.with(this).load(bingPic).into(bingPicImg); } else { loadBingPic(); } navButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { drawerLayout.openDrawer(GravityCompat.START); } }); } /** * 加载必应每日一图 */ private void loadBingPic() { String requestBingPic = "http://guolin.tech/api/bing_pic"; HttpUtil.sendOkHttpRequest(requestBingPic, new Callback() { @Override public void onFailure(@NotNull Call call, @NotNull IOException e) { e.printStackTrace(); } @Override public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException { final String bingPic = response.body().string(); SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(WeatherActivity.this).edit(); editor.putString("bing_pic", bingPic); editor.apply(); runOnUiThread(new Runnable() { @Override public void run() { Glide.with(WeatherActivity.this).load(bingPic).into(bingPicImg); } }); } }); } /** * 根据天气id请求城市天气信息 * * @param weatherId */ public void requestWeather(final String weatherId) { String weatherUrl = "http://guolin.tech/api/weather?cityid=" + weatherId + "&key=ca5202ab136049029e17824f7357f163"; // 发送请求 HttpUtil.sendOkHttpRequest(weatherUrl, new Callback() { @Override public void onResponse(Call call, Response response) throws IOException { final String responseText = response.body().string(); // 调用Utility.handleWeatherResponse()将返回的JSON数据转换成Weather对象 final Weather weather = Utility.handleWeatherResponse(responseText); // 将线程切换到主线程 runOnUiThread(new Runnable() { @Override public void run() { if (weather != null && "ok".equals(weather.status)) { // 返回数据缓存到SharedPreferences中，并进行显示 SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(WeatherActivity.this).edit(); editor.putString("weather", responseText); editor.apply(); showWeatherInfo(weather); } else { Toast.makeText(WeatherActivity.this, "获取天气信息失败", Toast.LENGTH_SHORT).show(); } swipeRefresh.setRefreshing(false); } }); } @Override public void onFailure(Call call, IOException e) { e.printStackTrace(); runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(WeatherActivity.this, "获取天气信息失败", Toast.LENGTH_SHORT).show(); swipeRefresh.setRefreshing(false); } }); } }); loadBingPic(); } /** * 处理并展示Weather实体类中的数据 * 从Weather对象获取数据，然后显示到相应的空间上。 * @param weather */ public void showWeatherInfo(Weather weather) { String cityName = weather.basic.cityName; String updateTime = weather.basic.update.updateTime.split(" ")[1]; String degree = weather.now.temperature + "℃"; String weatherInfo = weather.now.more.info; titleCity.setText(cityName); titleUpdateTime.setText(updateTime); degreeText.setText(degree); weatherInfoText.setText(weatherInfo); forecastLayout.removeAllViews(); for (Forecast forecast : weather.forecastList) { View view = LayoutInflater.from(this).inflate(R.layout.forecast_item, forecastLayout, false); TextView dateText = (TextView) view.findViewById(R.id.date_text); TextView infoText = (TextView) view.findViewById(R.id.info_text); TextView maxText = (TextView) view.findViewById(R.id.max_text); TextView minText = (TextView) view.findViewById(R.id.min_text); dateText.setText(forecast.date); infoText.setText(forecast.more.info); maxText.setText(forecast.temperature.max); minText.setText(forecast.temperature.min); forecastLayout.addView(view); } if (weather.aqi != null) { aqiText.setText(weather.aqi.city.aqi); pm25Text.setText(weather.aqi.city.pm25); Intent intent = new Intent(this, AutoUpdateService.class); startService(intent); } String comfort = "舒适度：" + weather.suggestion.comfort.info; String carWash = "洗车指数：" + weather.suggestion.carWash.info; String sport = "运动建议：" + weather.suggestion.sport.info; comfortText.setText(comfort); carWashText.setText(carWash); sportText.setText(sport); weatherLayout.setVisibility(View.VISIBLE); }}

请求天气数据，将数据展示到界面上手动更新

res

drawable

layout

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <fragment android:id="@+id/choose_area_fragment" android:name="com.example.coolweather.ChooseAreFragment" android:layout_width="match_parent" android:layout_height="match_parent"/></FrameLayout>

activity_weather.xml

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/activity_weather" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorPrimary"> <ImageView android:id="@+id/bing_pic_img" android:layout_width="match_parent" android:layout_height="match_parent" android:scaleType="centerCrop" />   <android.support.v4.widget.DrawerLayout android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent">  <android.support.v4.widget.SwipeRefreshLayout android:id="@+id/swipe_refresh" android:layout_width="match_parent" android:layout_height="match_parent"> <ScrollView android:id="@+id/weather_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:overScrollMode="never" android:scrollbars="none">  <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:fitsSystemWindows="true" android:orientation="vertical"> <include layout="@layout/title" /> <include layout="@layout/now" /> <include layout="@layout/forecast" /> <include layout="@layout/aqi" /> <include layout="@layout/suggestion" /> </LinearLayout> </ScrollView> </android.support.v4.widget.SwipeRefreshLayout> <fragment android:id="@+id/choose_area_fragment" android:name="com.example.coolweather.ChooseAreFragment" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="start" /> </android.support.v4.widget.DrawerLayout></FrameLayout>

天气界面总布局

choose_area.xml

<?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" android:background="#fff">  <RelativeLayout android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary">  <TextView android:id="@+id/title_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:textColor="#fff" android:textSize="20sp"/>  <Button android:id="@+id/back_button" android:layout_width="25dp" android:layout_height="25dp" android:layout_marginLeft="10dp" android:layout_alignParentLeft="true" android:layout_centerVertical="true" android:background="@drawable/ic_back"/> </RelativeLayout>   <ListView android:id="@+id/list_view" android:layout_width="match_parent" android:layout_height="match_parent"> </ListView></LinearLayout>

遍历省市县功能布局需复用，采用碎片式

aqi.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="15dp" android:background="#8000">  <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="15dp" android:layout_marginTop="15dp" android:text="空气质量" android:textColor="#fff" android:textSize="20sp"/>  <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="15dp"> <RelativeLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1"> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_centerInParent="true">  <TextView android:id="@+id/aqi_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textColor="#fff" android:textSize="40sp"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textColor="#fff" android:text="AQI指数"/> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1"> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_centerInParent="true">  <TextView android:id="@+id/pm25_text" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:textColor="#fff" android:textSize="40sp"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="PM2.5指数" android:textColor="#fff"/> </LinearLayout> </RelativeLayout> </LinearLayout></LinearLayout>

forecast.xml

<?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="wrap_content" android:layout_margin="15dp" android:background="#8000" android:orientation="vertical">   <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="15dp" android:text="预报" android:textColor="#fff" android:textSize="20sp"/>  <LinearLayout android:id="@+id/forecast_layout" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content"> </LinearLayout></LinearLayout>

forecast_item.xml

<?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="wrap_content" android:layout_margin="15dp">   <TextView android:id="@+id/date_text" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_weight="2" android:textColor="#fff" />  <TextView android:id="@+id/info_text" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_weight="1" android:gravity="center" android:textColor="#fff"/>  <TextView android:id="@+id/max_text" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="right" android:textColor="#fff"/>  <TextView android:id="@+id/min_text" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="right" android:textColor="#fff"/></LinearLayout>

now.xml

<?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="wrap_content" android:orientation="vertical" android:layout_margin="15dp">   <TextView android:id="@+id/degree_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="end" android:textColor="#fff" android:textSize="60sp" />  <TextView android:id="@+id/weather_info_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="end" android:textColor="#fff" android:textSize="20sp"/></LinearLayout>

suggestion.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="15sp" android:background="#8000">   <TextView android:layout_marginLeft="15dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="15dp" android:text="生活建议" android:textColor="#fff" android:textSize="20sp"/>  <TextView android:id="@+id/comfort_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="15dp" android:textColor="#fff"/>  <TextView android:id="@+id/car_wash_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="15dp" android:textColor="#fff"/>  <TextView android:id="@+id/sport_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="15dp" android:textColor="#fff"/></LinearLayout>

title.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize">   <Button android:id="@+id/nav_button" android:layout_width="30dp" android:layout_height="30dp" android:layout_marginLeft="10dp" android:layout_alignParentLeft="true" android:layout_centerVertical="true" android:background="@drawable/ic_home"/>  <TextView android:id="@+id/title_city" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:textColor="#fff" android:textSize="20sp"/>  <TextView android:id="@+id/title_update_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="10dp" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:textColor="#fff" android:textSize="16sp"/></RelativeLayout>

引用布局技术，将界面的不同部分写在不同的文件中，再通过引入布局的方式集成到activity_weather.xml中。

mipmap

values

strings.xml

styles.xml

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.coolweather"> <uses-permission android:name="android.permission.INTERNET" /> //网络许可 <application android:name="org.litepal.LitePalApplication" //数据库的配置，数据库和表会在首次执行任意数据库操作自动创建 android:allowBackup="true" android:icon="@mipmap/weather" android:label="@string/app_name" android:networkSecurityConfig="@xml/network_security_config" android:roundIcon="@mipmap/weather" android:supportsRtl="true" android:theme="@style/AppTheme"> <service android:name=".service.AutoUpdateService" android:enabled="true" android:exported="true"></service> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".WeatherActivity" /> //添加页面 </application></manifest>

配置文件

build.gradle

apply plugin: 'com.android.application'android { compileSdkVersion 28 defaultConfig { applicationId "com.example.coolweather" minSdkVersion 15 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } }}dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'com.android.support.constraint:constraint-layout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' implementation 'org.litepal.android:java:3.0.0' implementation 'com.squareup.okhttp3:okhttp:4.0.0' implementation 'com.google.code.gson:gson:2.8.5' implementation 'com.github.bumptech.glide:glide:4.9.0' annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'}

子主题

添加依赖库

litepal 数据库

okhttp3 网络请求

gson 解析json数据

glide 加载和展示图片

id 市id cityName 市名字 cityCode 市代号 provinceId 市所属省id

id：县id countyName：县名字 weatherId：县天气id cityId：县所属市id

id 省id provinceName 省名字 provinceCode 省代号

coolweather 库名1 库版本

客户端与服务器的交互发起http请求只需调用sendOkHttprequest()这个方法，传入一个地址，并且注册一个回调来处理服务器的响应。

处理服务器返回的Json格式的数据handleProvinceResponse()、handleCityResponse()、handleCuntyoResponse()，分别解析省，市，县.使用JSONArray和JSONObject进行解析，然后组装成实体类对象，再调用save()方法存储到数据库中handleWeatherResponse()，解析天气JSONObject和JSONArray将天气中的主体内容解析出来，之后可通过调用fromJson()方法将JSON转换成Weather对象。