CoolWeather

1. 构建数据库模型

因为是构建一个天气的APP，需要显示各地的天气，所以需要构建一个数据库模型存放省、市、县各级的数据

数据库模型

我们借助于LitePal进行数据库的操作(省、市、县类似)：
所以我们需要添加依赖库：

litepal

package com.example.bbw.coolweather2.db;

import org.litepal.crud.DataSupport;

/**
 * Province的实体类，方便对Province的操作
 * Created by bbw on 2017/7/3.
 */

public class Province extends DataSupport {

    private int id;
    private String provinceName;
    private int provinceCode;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getProvinceName() {
        return provinceName;
    }

    public void setProvinceName(String provinceName) {
        this.provinceName = provinceName;
    }

    public int getProvinceCode() {
        return provinceCode;
    }

    public void setProvinceCode(int provinceCode) {
        this.provinceCode = provinceCode;
    }
}

数据库模型——市 数据库模型——县.png

因为点击市和县的时候可能会返回上一级，所以在数据库模型中添加了上一级的id，当确定县之后，要显示天气，所以在县级模型中添加了weatherId。

2. 获取全国省市县数据
   引入依赖库

OKhttp3

建立一个与服务器交互的类HttpUtil

package com.example.bbw.coolweather2.util;

import okhttp3.OkHttpClient;
import okhttp3.Request;

/**
 * 与服务器的交互
 * Created by bbw on 2017/7/3.
 */

public class HttpUtil {
    public static void sendOKHttpRequest(String address,okhttp3.Callback callback){
        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder().url(address).build();
        client.newCall(request).enqueue(callback);
    }
}

现在我们发起一条HTTP请求只需要调用sendOKHttpRequest()方法，传入请求的地址，并注册一个回调来处理服务器的响应就可以了。
由于返回的数据是JSON格式的，

![JSON格式数据 image_747768.png . . .]
所以我们需要新建一个Utility类来处理这类数据。
先使用JSONArray和JSONObject将数据解析出来，然后组装成实体类对象，再调用save（）方法将数据存储到数据库中。

package com.example.bbw.coolweather2.util;

import android.text.TextUtils;
import android.util.Log;

import com.example.bbw.coolweather2.db.City;
import com.example.bbw.coolweather2.db.County;
import com.example.bbw.coolweather2.db.Province;
import com.example.bbw.coolweather2.gson.Weather;
import com.google.gson.Gson;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * json格式数据解析和处理
 * Created by bbw on 2017/7/3.
 */

public class Utility {

    static String TAG = "测试";

    //解析和处理服务器返回的省级数据,response:http请求的响应
    public static boolean handleProvinceResponse(String response){

        //响应非空
        if (!TextUtils.isEmpty(response)){
            try {
                JSONArray allProvince = new JSONArray(response);
                for (int i = 0;i < allProvince.length();i++){
                    JSONObject provinceObject = allProvince.getJSONObject(i);
                    Province province = new Province();
                    province.setProvinceName(provinceObject.getString("name"));
                    province.setProvinceCode(provinceObject.getInt("id"));
                    province.save();
                    Log.d(TAG," 成功");
                }
                return true;
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        return false;
    }

    //解析和处理服务器返回的市级数据
    public static boolean handleCitiesResponse(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的县级数据
    public static boolean handleCountiesResponse(String response, int cityId){

        if (! TextUtils.isEmpty(response)){
            Log.d("utility response",response);
            try {
                JSONArray allCounties = new JSONArray(response);
                for (int i=0;i < allCounties.length();i++) {
                    JSONObject countyObject = allCounties.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;
    }

因为获取全国省市县的功能在后面还会使用，所以界面的代码不写在活动里面，而是写在碎片里面，这样需要复用的时候直接在布局中引用碎片就可以了。

<?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="match_parent"
    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"/>

</LinearLayout>

遍历省市县数据的碎片

package com.example.bbw.coolweather2;

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.bbw.coolweather2.db.City;
import com.example.bbw.coolweather2.db.County;
import com.example.bbw.coolweather2.db.Province;
import com.example.bbw.coolweather2.gson.Weather;
import com.example.bbw.coolweather2.util.HttpUtil;
import com.example.bbw.coolweather2.util.Utility;

import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * Created by bbw on 2017/8/24.
 */

public class ChooseAreaFragment 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;
    private List<String> dataList = new ArrayList<>();
    private List<Province> provinceList;//省列表
    private List<City> cityList;//市列表
    private List<County> countyList;//县列表
    private Province selectedProvince;//选中的省份
    private City selectedCity;//选中的城市
    private int currentLevel;//当前选中的级别

    //获取控件的实例，初始化ArrayAdapter，并将它设置为ListView的适配器
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.choose_area,container,false);
        titleText = view.findViewById(R.id.title_text);
        backButton = view.findViewById(R.id.back_button);
        listView = view.findViewById(R.id.list_view);
        adapter = new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view ;
    }

    //给ListView和Button设置点击事件
    @Override
    public void onActivityCreated( Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){

            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                if (currentLevel == LEVEL_PROVINCE){
                    selectedProvince = provinceList.get(i);
                    queryCities();
                    Log.d("查询","市级数据");
                }else if (currentLevel == LEVEL_CITY){
                    selectedCity = cityList.get(i);
                    queryCounties();
                }else if (currentLevel == LEVEL_COUNTY){
                    String weatherId = countyList.get(i).getWeatherId();
                    if (getActivity() instanceof MainActivity){
                        Intent intent = new Intent(getActivity(),WeatherActivity.class);
                        intent.putExtra("weather_id",weatherId);
                        Log.d("ceshi","服务器查询数据");

                        startActivity(intent);
                        getActivity().finish();
                    }else if (getActivity() instanceof WeatherActivity){
                        WeatherActivity activity = (WeatherActivity) getActivity();
                        activity.drawerLayout.closeDrawers();
                        activity.swipeRefresh.setRefreshing(true);
                        activity.requestWeather(weatherId);
                    }
                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (currentLevel == LEVEL_COUNTY){
                    queryCities();
                }else if (currentLevel == LEVEL_CITY){
                    queryProvinces();
                }
            }
        });
        queryProvinces();
    }

    //查询省级数据
    private void queryProvinces() {
        Log.d("测试 ","查询省级数据");
        titleText.setText("中国");
        backButton.setVisibility(View.GONE);
        provinceList = DataSupport.findAll(Province.class);
        if (provinceList.size() > 0){
            dataList.clear();
            for (Province province : provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel = LEVEL_PROVINCE;
        }else {
            String address = "http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }
    }

    //查询市级数据
    private void queryCities() {
        titleText.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);
        cityList = DataSupport.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");
        }
    }

    //查询县级数据
    private void queryCounties() {
        titleText.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);
        countyList = DataSupport.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
    private void queryFromServer(String address,final String type) {
        showProgressDialog();
        HttpUtil.sendOKHttpRequest(address, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                //通过runOnUiThread()方法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.handleCitiesResponse(responseText,selectedProvince.getId());
                }else if ("county".equals(type)){
                    result = Utility.handleCountiesResponse(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();
                            }
                        }
                    });
                }
            }
        });
    }

    private void closeProgressDialog() {
        if (progressDialog != null){
            progressDialog.dismiss();
        }
    }

    //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();
    }
}

添加碎片到活动中

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    tools:context="com.example.bbw.coolweather2.MainActivity">

    <fragment
        android:id="@+id/choose_area_fragment"
        android:name="com.example.bbw.coolweather2.ChooseAreaFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</FrameLayout>

3. 显示天气
   定义GSON实体类

定义GSON类

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

/**
 * Created by bbw on 2017/8/24.
 */

public class Basic {

    @SerializedName("city")
    public String cityName;

    @SerializedName("id")
    public String weatherId;

    public Update update;


    public class Update {
        @SerializedName("loc")
        public String updateTime;
    }
}

package com.example.bbw.coolweather2.gson;

/**
 * Created by bbw on 2017/8/24.
 */

public class AQI {

    public AQICity city;

    public class AQICity {
        public String aqi;
        public String pm25;
    }
}

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

/**
 * Created by bbw on 2017/8/24.
 */

public class Forecast {
    public String date;

    @SerializedName("tmp")
    public Temperature temperature;

    @SerializedName("cond")
    public More more;


    public class Temperature {
        public String max;
        public String min;
    }

    public class More {
        @SerializedName("txt_d")
        public String info;
    }
}

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

/**
 * Created by bbw on 2017/8/24.
 */

public class Now {
    @SerializedName("tmp")
    public String temperature;

    @SerializedName("cond")
    public More more;


    public class More {
        @SerializedName("txt")
        public String info;
    }
}

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

/**
 * Created by bbw on 2017/8/24.
 */

public class Now {
    @SerializedName("tmp")
    public String temperature;

    @SerializedName("cond")
    public More more;


    public class More {
        @SerializedName("txt")
        public String info;
    }
}

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

import java.util.List;

/**
 * Created by bbw on 2017/8/24.
 */

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;
}

显示天气的界面
title.xml

package com.example.bbw.coolweather2.gson;

import com.google.gson.annotations.SerializedName;

import java.util.List;

/**
 * Created by bbw on 2017/8/24.
 */

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;
}

now.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">

    <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>

forecast.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="match_parent"
    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="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:gravity="right"
        android:layout_weight="1"
        android:layout_gravity="center"
        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>

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="match_parent"
            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:text="AQI指数"
                    android:textColor="#fff"/>
            </LinearLayout>
        </RelativeLayout>

        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            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="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:text="PM2.5指数"
                    android:textColor="#fff"/>
            </LinearLayout>
        </RelativeLayout>
    </LinearLayout>
</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="match_parent"
    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="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>

所有的布局文件引入activity_weather.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    tools:context="com.example.bbw.coolweather2.WeatherActivity">

    <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="match_parent"
                android:scrollbars="none"
                android:overScrollMode="never">

                <LinearLayout
                    android:orientation="vertical"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:fitsSystemWindows="true">

                    <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.bbw.coolweather2.ChooseAreaFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="start"/>
    </android.support.v4.widget.DrawerLayout>


</FrameLayout>

显示天气
Utility中解析天气JSON数据

/将返回的JSON数据解析成Weather实体类
    public static Weather handleWeatherResponse(String response){
        try {
            JSONObject jsonObject = new JSONObject(response);
            JSONArray jsonArray = jsonObject.getJSONArray("HeWeather");
            String weatherContent = jsonArray.getJSONObject(0).toString();
            return new Gson().fromJson(weatherContent,Weather.class);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return null;
    }

请求天气数据，以及展示到界面上

package com.example.bbw.coolweather2;

import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Build;
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.os.Bundle;
import android.util.Log;
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.bbw.coolweather2.gson.Forecast;
import com.example.bbw.coolweather2.gson.Weather;
import com.example.bbw.coolweather2.service.AutoUpdateService;
import com.example.bbw.coolweather2.util.HttpUtil;
import com.example.bbw.coolweather2.util.Utility;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

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;
    private String mWeatherId;
    public DrawerLayout drawerLayout;
    private Button navButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(Build.VERSION.SDK_INT >=21){
            View decorView = getWindow().getDecorView();
            decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
            getWindow().setStatusBarColor(Color.TRANSPARENT);
        }
        setContentView(R.layout.activity_weather);

        //初始化控件
        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);
        swipeRefresh.setColorSchemeResources(R.color.colorPrimary);
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        navButton = (Button) findViewById(R.id.nav_button);

        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
        String weatherString = preferences.getString("weather",null);
        String bingPic = preferences.getString("bing_pic",null);
        if (bingPic != null){
            Glide.with(this).load(bingPic).into(bingPicImg);
        }else {
            loadBingPic();
        }
        if (weatherString != null){
            Log.d("测试``````````", weatherString);
            //有缓存直接解析天气数据
            Weather weather = Utility.handleWeatherResponse(weatherString);
            mWeatherId = weather.basic.weatherId;
            showWeatherInfo(weather);
        }else {
            //没有缓存时去服务器查询
            mWeatherId = getIntent().getStringExtra("weather_id");
            //String weatherId = getIntent().getStringExtra("weather_id");
            weatherLayout.setVisibility(View.INVISIBLE);
            Log.d("ceshi " ,"看不到" );
            requestWeather(mWeatherId);
        }
        swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                requestWeather(mWeatherId);
            }
        });
        navButton.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View view) {
                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(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, 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);
                    }
                });
            }
        });
    }

    //根据天气的id请求天气信息
    public void requestWeather(final String weatherId) {
        String weatherUrl = "http://guolin.tech/api/weather?cityid=" + weatherId + "&key=6e34fb664b2d421cabf16561b3b3048d";
        HttpUtil.sendOKHttpRequest(weatherUrl, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                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);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

                final String responseText = response.body().string();
                final Weather weather = Utility.handleWeatherResponse(responseText);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        if (weather != null && "ok".equals(weather.status)){
                            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);
                    }
                });
            }
        });
        loadBingPic();
    }

    //处理并展示Weather类中的数据
    private 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 = view.findViewById(R.id.date_text);
            TextView infoText = view.findViewById(R.id.info_text);
            TextView maxText = view.findViewById(R.id.max_text);
            TextView minText = view.findViewById(R.id.min_text);
            Log.d("```````",forecast.date);
            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);
        }
        String comfort = "舒适度: " + weather.suggestion.comfort.info;
        String carWash = "洗车指数: " + weather.suggestion.carWash.info;
        String sport = "运动指数: " + weather.suggestion.sport.info;
        comfortText.setText(comfort);
        carWashText.setText(carWash);
        sportText.setText(sport);
        weatherLayout.setVisibility(View.VISIBLE);
        Intent intent = new Intent(this, AutoUpdateService.class);
        startService(intent);
    }
}