android 天气背景安卓天气屏保

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mob6454cc690811 2024-08-01 12:35:33

文章标签 android 天气背景安卓 android studio java android 文章分类 Android 移动开发

步骤

系列文章
前言

实现效果
项目结构
1.获取必应每日一图

1.1修改修改activity_weather.xml
1.2修改WeatherActivity

2.背景图和状态栏效果修改

2.1修改WeatherActivity
2.2修改activity_weather.xml

附录.参考资料
下载资源

总结

系列文章

提示：转到安卓学习专栏，观看更多内容！
点我直达–>安卓学习专栏本项目注意包名前缀的修改，改成你自己的，我的包名是：
com.example.coolweather，不然会报错。

前言

本次主题：给天气页面加上背景图片
项目实战继承前面的文章
上一篇文章
安卓学习专栏——实战项目酷欧天气（3）显示天气信息
传送门：

实现效果

android 天气背景安卓天气屏保_java

项目结构

在com.coolweather.android包下几个包

db包用于存放数据库模型相关的代码
gson包用于存放GSON模型相关的代码
service包用于存放服务相关的代码
util包用于存放工具相关的代码。

1.获取必应每日一图

必应这个网站每日会更新一张好看的背景图片，我们可以用必应的图片装饰我们的应用。

郭霖老师专门准备了一个获取必应每日一图的接口：http://guolin.tech/api/bing_pic（接口仅供学习，大家不要恶意商用爆破）

思路过程：

访问接口
服务器会返回今日的必应背景图链接
依靠链接使用Glide加载图片

1.1修改修改activity_weather.xml

在FrameLayout中添加了一个ImageView，并且将它的宽和高都设置成match_parent。由于FrameLayout默认情况下会将控件都放置在左上角，因此ScrollView会完全覆盖住ImageView，从而ImageView也就成为背景图片了

原来的“<ScrollView”上添加代码

<ImageView
    android:id="@+id/bing_pic_img"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="centerCrop" />

完整代码

<?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"
    android:background="@color/colorPrimary">

    <ImageView
        android:id="@+id/bing_pic_img"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop" />

    <ScrollView
        android:id="@+id/weather_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:overScrollMode="never"
        android:scrollbars="none">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            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>
</FrameLayout>

1.2修改WeatherActivity

首先在onCreate() 方法中获取了新增控件ImageView的实例，
然后尝试从SharedPreferences中读取缓存的背景图片。

如果有缓存的话就直接使用Glide来加载这张图片，如果没有的话就调用loadBingPic() 方法去请求今日的必应背景图。

loadBingPic() 方法中的逻辑就非常简单了，先是调用了 HttpUtil.sendOkHttpRequest() 方法获取到必应背景图的链接，然后将这个链接缓存到SharedPreferences当中，再将当前线程切换到主线程，最后使用Glide来加载这张图片就可以了。
在requestWeather() 方法的最后也需要调用一下loadBingPic() 方法，这样在每次请求天气信息的时候同时也会刷新背景图片。

添加代码

private ImageView bingPicImg;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_weather);
        // 初始化各控件
        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);
        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);
            showWeatherInfo(weather);
        } else {
            // 无缓存时去服务器查询天气
            String weatherId = getIntent().getStringExtra("weather_id");
            weatherLayout.setVisibility(View.INVISIBLE);
            requestWeather(weatherId);
        }
        bingPicImg = (ImageView) findViewById(R.id.bing_pic_img);
        String bingPic = prefs.getString("bing_pic", null);
        if (bingPic != null) {
            Glide.with(this).load(bingPic).into(bingPicImg);
        } else {
            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);
                    }
                });
            }

            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }
        });
    }

完整代码

package com.example.coolweather;

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.View;
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.util.HttpUtil;
import com.example.coolweather.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;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_weather);
        // 初始化各控件
        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);
        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);
            showWeatherInfo(weather);
        } else {
            // 无缓存时去服务器查询天气
            String weatherId = getIntent().getStringExtra("weather_id");
            weatherLayout.setVisibility(View.INVISIBLE);
            requestWeather(weatherId);
        }
        bingPicImg = (ImageView) findViewById(R.id.bing_pic_img);
        String bingPic = prefs.getString("bing_pic", null);
        if (bingPic != null) {
            Glide.with(this).load(bingPic).into(bingPicImg);
        } else {
            loadBingPic();
        }
    }


    /**
     * 根据天气id请求城市天气信息
     */
    public void requestWeather(final String weatherId) {
        String weatherUrl = "http://guolin.tech/api/weather?cityid=" +
                weatherId + "&key=bc0418b57b2d4918819d3974ac1285d9";
        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();
                        }
                    }
                });
            }

            @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();
                    }
                });
            }
        });
    }

    /**
     * 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);
                    }
                });
            }

            @Override
            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) {
        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);
    }
}

2.背景图和状态栏效果修改

目前的效果

android 天气背景安卓天气屏保_java_02

2.1修改WeatherActivity

修改WeatherActivity，背景图和状态栏融合。

Android 5.0及以上的系统才支持的，因此我们先在代码中做了一个系统版本号的判断，只有当版本号大于或等于21，也就是5.0及以上系统时才会执行后面的代码。

添加代码

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);

完整代码

package com.example.coolweather;

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.View;
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.util.HttpUtil;
import com.example.coolweather.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;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_weather);
        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
        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);
        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);
            showWeatherInfo(weather);
        } else {
            // 无缓存时去服务器查询天气
            String weatherId = getIntent().getStringExtra("weather_id");
            weatherLayout.setVisibility(View.INVISIBLE);
            requestWeather(weatherId);
        }
        bingPicImg = (ImageView) findViewById(R.id.bing_pic_img);
        String bingPic = prefs.getString("bing_pic", null);
        if (bingPic != null) {
            Glide.with(this).load(bingPic).into(bingPicImg);
        } else {
            loadBingPic();
        }

    }


    /**
     * 根据天气id请求城市天气信息
     */
    public void requestWeather(final String weatherId) {
        String weatherUrl = "http://guolin.tech/api/weather?cityid=" +
                weatherId + "&key=bc0418b57b2d4918819d3974ac1285d9";
        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();
                        }
                    }
                });
            }

            @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();
                    }
                });
            }
        });
    }

    /**
     * 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);
                    }
                });
            }

            @Override
            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) {
        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);
    }


}

2.2修改activity_weather.xml

修改activity_weather.xml解决头布局和状态栏紧贴在一起的问题。

android 天气背景安卓天气屏保_android studio_03

由于系统状态栏已经成为我们布局的一部分，因此没有单独为它留出空间。当然，这个问题也是非常好解决的，借助android:fitsSystemWindows 属性。

android:fitsSystemWindows 属性，设置成true 就表示会为系统状态栏留出空间。

添加代码

android:fitsSystemWindows="true"

完整代码

<?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"
    android:background="@color/colorPrimary">

    <ImageView
        android:id="@+id/bing_pic_img"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop" />

    <ScrollView
        android:id="@+id/weather_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:overScrollMode="never"
        android:scrollbars="none">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            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>
</FrameLayout>

android 天气背景安卓天气屏保_java

附录.参考资料

《第一行代码》14.5 显示天气信息

下载资源

gitee地址

https://gitee.com/miao-zehao/cool-weather

android 天气背景安卓天气屏保_android_05

安卓学习者实战项目酷欧天气（4）给天气页面加上背景图片示例

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