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   源码介绍

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package com.example.coolweather;

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.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 java.io.IOException;

import javax.sql.StatementEvent;

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

public class WeatherActivity extends AppCompatActivity {

    private String weatherId;

    public DrawerLayout drawerLayout;
    private Button navButton;
    public SwipeRefreshLayout swipeRefresh;

    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;

    @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_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
            getWindow().setStatusBarColor(Color.TRANSPARENT);
        }
        setContentView(R.layout.activity_weather);
        //初始化各控件
        drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
        navButton = (Button)findViewById(R.id.nav_button);

        bingPicImg = (ImageView)findViewById(R.id.bing_pic_img);
        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);

        swipeRefresh = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh);
        swipeRefresh.setColorSchemeResources(R.color.colorPrimary);

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        String weatherString = prefs.getString("weather", null);

        //123

        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 {
            //无缓存时去服务器查询天气
            weatherId = getIntent().getStringExtra("weather_id");
            //String weatherId = getIntent().getStringExtra("weather_id");
            weatherLayout.setVisibility(View.INVISIBLE);
            requestWeather(weatherId);
        }
        swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            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);
            }
        });
    }
    /*
    * 根据天气id请求城市天气信息
    * */
    public void requestWeather(final String weatherId) {
        this.weatherId = weatherId;
        String weatherUrl = "http://guolin.tech/api/weather?cityid="  weatherId  "&key=ab403c16977b4b52857be2b141794285";
        HttpUtil.sendOkHttpRequest(weatherUrl, new Callback() {
            @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);
                    }
                });
            }
            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();
    }

    /*
    * 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 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);
                    }
                });
            }
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }
        });
    }

    /*
    * 处理并展示Weather实体类中的数据
    * */
    private void showWeatherInfo(Weather weather) {
        if (weather != null && "ok".equals(weather.status)) {
            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);
            }
            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);

            Intent intent = new Intent(this, AutoUpdateService.class);
            startService(intent);
            Log.i("WeatherActivity", "龙相如");
        } else {
            Toast.makeText(WeatherActivity.this, "获取天气信息失败", Toast.LENGTH_SHORT).show();
        }
    }
}