基于Java的天气预报APP设计

红太狼 2024-04-06 10:19 34阅读 0赞

目录  
第一阶段 1  
最终第一阶段完成，设计好数据库。上传到git上以保存！ 4  
第二阶段 4  
第三阶段 8  
第四阶段： 17  
里面的密码啥的，我设置为“１２３４５６”简单一点！ 22

第一阶段  
1，准备着手于一个天气应用的开发，这个是一个比较重要的项目尝试，目的是将之前整理过的东西再好好串接起来。首先先找到一个合适的api接口，通过资料查询，有一个蛮好的推荐——和风天气。  
2，现在缓缓脑子，等等将书本里的这个项目实战一下，将一些功能实现。在开始之前先好好理理思路，不着急。  
1,今天先测试一下和风天气的sdk的测试看看是这么一回事，再写课本里面的开发。首先导入相应的包，然后看他提供的开发文档，看看有什么需要修改的。  
这个是北京的天气情况。对比我获取的信息，基本一致，这说明我使用该接口比较顺利。  
2，以上的成功连接给了我一个很好的启发思考，我最终的修改方案可以基于以上的接口实现。不过现在还在打基础，先跟着课本中的知识要点进行开发吧。  
3，正式进入开发：思路捋一捋。本文转载自http://www.biyezuopin.vip/onews.asp?id=15020这次开发需要用到的知识点有UI，数据存储，服务，网络请求等等。  
4，gitee仓库分布式管理；老规矩先创建一个仓库保证修改的过程的一些细节上的修改。回顾之前gitee的一系列操作。

package com.example.myweather;
    
    import android.content.Intent;
    import android.content.SharedPreferences;
    import android.graphics.Color;
    import android.os.Build;
    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.preference.PreferenceManager;//这个被废弃了，但是考虑到学习的过程，还是进行使用吧
    import android.widget.Toast;
    
    import androidx.annotation.Nullable;
    import androidx.appcompat.app.AppCompatActivity;
    import androidx.core.view.GravityCompat;
    import androidx.drawerlayout.widget.DrawerLayout;
    import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
    
    import com.bumptech.glide.Glide;
    import com.example.myweather.gson.Forecast;
    import com.example.myweather.gson.Weather;
    import com.example.myweather.util.HttpUtil;
    import com.example.myweather.util.Utility;
    
    import org.jetbrains.annotations.NotNull;
    
    import java.io.IOException;
    
    import okhttp3.Call;
    import okhttp3.Callback;
    import okhttp3.Response;
    
    //对天气界面进行编码
    public class WeatherActivity extends AppCompatActivity {
        
        //先把这些组件搞定
        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;
        //背景图片的组件
        private ImageView imageView;
        //这个是更新天气情况的组件
        public SwipeRefreshLayout swipeRefreshLayout;
        //切换城市的组件
        public DrawerLayout drawerLayout;
        private Button navButton;
        @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_weather);
            //考虑到整体设计美观，UI
            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);
            }
            //背景图片
            imageView = findViewById(R.id.bing_pic_img);
            //视图和逻辑结合起来
            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);
            //城市切换的组件
            drawerLayout = findViewById(R.id.drawer_layout);
            navButton = findViewById(R.id.nav_button);
            //对于navbutton进行点击设计
            navButton.setOnClickListener(new View.OnClickListener() {
        
                @Override
                public void onClick(View v) {
        
                    drawerLayout.openDrawer(GravityCompat.START);
                }
            });
            //对于天气的更改数据
            swipeRefreshLayout = findViewById(R.id.swipe_refresh);
            swipeRefreshLayout.setColorSchemeResources(R.color.colorPrimary);
            //设计是用SharedPreferences进行数据存储，天气情况的存储
            SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
            String weatherString = preferences.getString("weather",null);
            //通过weatherId获取更新数据
            final String weatherId;
            if(weatherString != null){
        
                Weather weather = Utility.handleWeatherResponse(weatherString);//获得这些天气数据
                //展示数据
                weatherId = weather.basic.weatherId;
                showWeatherInfo(weather);//在根据获得的weather对象进行展示
            }else {
        
                //如果本地没有缓存那就直接去服务器上查
                weatherId = getIntent().getStringExtra("weather_id");
                weatherLayout.setVisibility(View.INVISIBLE);//设计成不可视
                requestWeather(weatherId);//请求天气情况！
            }
            swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        
                @Override
                public void onRefresh() {
        
                    //重新请求一下天气
                    requestWeather(weatherId);
                    Log.d("requestWeatherAgain", "onRefresh: ");
                }
            });
            //背景图片的处理
            String bingPic = preferences.getString("bing_pic",null);
            if(bingPic != null){
        
                //使用这个神奇的GLide进行图片设置
                Glide.with(this).load(bingPic).into(imageView);
            }else{
        
                //网络申请获取图片
                loadBingPic();
            }
        }
    
        //思路也比较简单，就是通过工具类将该图片的地址存储在SharedPreferences中再读取到界面
        private void loadBingPic() {
        
            String picUrl = "http://guolin.tech/api/bing_pic";
            HttpUtil.sendOkHttpRequest(picUrl, 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 {
        
                    //转化成字符串然后再存储保存
                    final String bodyString = response.body().string();
                    SharedPreferences.Editor editor = PreferenceManager.
                            getDefaultSharedPreferences(WeatherActivity.this)
                            .edit();
                    editor.putString("bing_pic",bodyString);
                    editor.apply();
                    //更新视图活动
                    runOnUiThread(new Runnable() {
        
                        @Override
                        public void run() {
        
                            Glide.with(WeatherActivity.this).load(bodyString).into(imageView);
                        }
                    });
                }
            });
        }
    
        public void requestWeather(String weatherId) {
        
            //通过网络请求获取相应的天气情况
            String weatherUrl = "http://guolin.tech/api/weather?cityid=" + weatherId + "&key=bc0418b57b2d4918819d3974ac1285d9";
            HttpUtil.sendOkHttpRequest(weatherUrl, new Callback() {
        
                final static String TAG = "httpUtil";
                //实现这两个方法即可
                @Override
                public void onFailure(@NotNull Call call, @NotNull IOException e) {
        
                    e.printStackTrace();//看看问题所在
                    Log.d(TAG, "onFailure: ");
                    runOnUiThread(new Runnable() {
        
                        //ui更新
                        @Override
                        public void run() {
        
                            Toast.makeText(WeatherActivity.this, "获取天气信息失败", Toast.LENGTH_SHORT).show();
                            swipeRefreshLayout.setRefreshing(false);//停止更新
                        }
                    });
                }
    
                @Override
                public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
        
                    Log.d(TAG, "onResponse: ");
                    //将获取的json通过解析得到weather对象
                    final String responseString = response.body().string();
                    final Weather weather = Utility.handleWeatherResponse(responseString);
                    //更新天气界面并且存储到数据文件sharedPreference中
                    runOnUiThread(new Runnable() {
        
                        @Override
                        public void run() {
        
                            if(weather != null && "ok".equals(weather.status)){
        
                                //开始存储
                                SharedPreferences.Editor editor = PreferenceManager.
                                        getDefaultSharedPreferences(WeatherActivity.this)
                                        .edit();
                                editor.putString("weather",responseString);
                                editor.apply();
                                showWeatherInfo(weather);
                                //启动服务
                                Intent intent = new Intent(WeatherActivity.this,AutoUpdateService.class);
                                startService(intent);
                            }else {
        
                                //没有该天气情况或者其他就直接说获取失败
                                Toast.makeText(WeatherActivity.this, "获取天气信息失败", Toast.LENGTH_SHORT).show();
                            }
                            swipeRefreshLayout.setRefreshing(false);
                        }
                    });
                }
            });
            loadBingPic();
        }
    
        private void showWeatherInfo(Weather weather) {
        
            //思路也比较简单就是通过获取json里的数据然后再活动里面展示出来
            String cityName = weather.basic.cityName;
            String updateTime = weather.basic.update.updateTime.split(" ")[1];//时间分隔，这里可能是根据独特的数据格式进行的一个处理
            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();//这一步待思考一下
            for(Forecast forecast: weather.forecastList){
        
                View view = LayoutInflater.from(this).inflate(R.layout.forecast_item,forecastLayout,false);//展示视图
                //在这个小组件里面的匹配好数据先
                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 = "运行建议：" + weather.suggestion.sport.info;
                comfortText.setText(comfort);
                carWashText.setText(carWash);
                sportText.setText(sport);
                weatherLayout.setVisibility(View.VISIBLE);
            }
    
        }
    }

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