Broadcast组件——收发广播应用——捕获屏幕的变更事件——竖屏与横屏切换

àì夳堔傛蜴生んèń 2023-09-28 16:27 26阅读 0赞

![c822ccb00a4593bef5c4fbbac49fc58c.png][]

![968eb5f2ea0887f3ac25a2b17e325ab8.png][]

![a123d3a4225fe0a83cf30e78031479fc.png][]

![e9efa23360ea6ffcc8755126da8a7702.png][]

============================================================================================

布局：

![3fc250874beb14e30e9a85ba26a88699.png][]

![bd079ba1d736665f4ca9aea0402fb0e2.png][]

代码：

package com.example.myapplication;
    
    import androidx.appcompat.app.AppCompatActivity;
    import android.content.res.Configuration;
    import android.os.Bundle;
    import android.widget.TextView;
    
    public class MainActivity extends AppCompatActivity
    {
    
        private TextView tv_monitor; // 声明一个文本视图对象
        private String mDesc = ""; // 屏幕变更的描述说明
    
        @Override
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
    
            tv_monitor = findViewById(R.id.tv_monitor);
        }
    
        // 在配置项变更时触发。比如屏幕方向发生变更等等
        // 有的手机需要在系统的“设置→显示”菜单开启“自动旋转屏幕”，或者从顶部下拉，找到“自动旋转”图标并开启
        @Override
        public void onConfigurationChanged(Configuration newConfig)
        {
            super.onConfigurationChanged(newConfig);
    
            // 判断当前的屏幕方向
            switch (newConfig.orientation)
            {
                case Configuration.ORIENTATION_PORTRAIT:           // 切换到竖屏
                    mDesc = String.format("%s%s %s\n", mDesc, DateUtil.getNowTime(), "当前屏幕为竖屏方向");
                    tv_monitor.setText(mDesc);
                    break;
                case Configuration.ORIENTATION_LANDSCAPE:      // 切换到横屏
                    mDesc = String.format("%s%s %s\n", mDesc, DateUtil.getNowTime(), "当前屏幕为横屏方向");
                    tv_monitor.setText(mDesc);
                    break;
                default:
                    break;
            }
        }
    }

![713b8573d3f8e00194f6650b60b8214f.png][]

![dda0eed9b67f21f14d91a61e7bdfd797.png][]

mainifest.xml

<?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.example.myapplication">
    
        <uses-permission android:name="android.permission.VIBRATE" />
    
    
        <application
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:roundIcon="@mipmap/ic_launcher_round"
            android:supportsRtl="true"
            android:theme="@style/Theme.MyApplication">
            <activity
                android:name=".MainActivity"
                android:configChanges="orientation|screenLayout|screenSize"
                android:exported="true">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
    
        </application>
    
    </manifest>

![ecad2bdcce668722db6381e9d1753a48.png][]

DateUtil：

package com.example.myapplication;
    
    import android.annotation.SuppressLint;
    import android.text.TextUtils;
    
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    
    @SuppressLint("SimpleDateFormat")
    public class DateUtil
    {
        // 获取当前的日期时间
        public static String getNowDateTime(String formatStr)
        {
            String format = formatStr;
            if (TextUtils.isEmpty(format))
            {
                format = "yyyyMMddHHmmss";
            }
    
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            return sdf.format(new Date());
        }
    
        // 获取当前的时间
        public static String getNowTime()
        {
            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
            return sdf.format(new Date());
        }
    
        // 获取当前的时间(精确到毫秒)
        public static String getNowTimeDetail()
        {
            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
            return sdf.format(new Date());
        }
    
        public static String getNowDate()
        {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
            return sdf.format(new Date());
        }
    
        public static String getDate(Calendar calendar)
        {
            Date date = calendar.getTime();
            // 创建一个日期格式化的工具
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            // 将当前日期时间按照指定格式输出格式化后的日期时间字符串
            return sdf.format(date);
        }
    
        public static String getMonth(Calendar calendar)
        {
            Date date = calendar.getTime();
            // 创建一个日期格式化的工具
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
            // 将当前日期时间按照指定格式输出格式化后的日期时间字符串
            return sdf.format(date);
        }
    
        public static Date formatString(String strTime)
        {
            Date date = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    
            try {
                date = sdf.parse(strTime);
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            return date;
        }
    
    }

![ba2a07dfdde4e16bb2a0755fb9ac7b42.png][]

![8cd305a2c1dc4c767c9cdf7b43e472d2.png][]

![aa98e4bd5da00918e6385d804b525da4.png][]

![14c252e2c7cf945f0babcfaa06e5fb0a.png][]

![139a2fe8e2c4807d5a7c8ffbb3b74463.png][]

![5aff7ac57606104c1a6028ad4ccf9163.png][]

![69961ff6a796927c8346280430ad7709.png][]

![cf61a98ba87733254dd3ed082da96ee6.png][]

![457ba4a9103069a29eb6b6300a311613.png][]

![2d00eb112b68417af0eac4ff3dcb700f.png][]

布局：

act：

package com.example.chapter09;
    
    import android.os.Bundle;
    import android.util.Log;
    import android.widget.TextView;
    
    import androidx.appcompat.app.AppCompatActivity;
    
    import com.example.chapter09.util.DateUtil;
    
    public class ActTestActivity extends AppCompatActivity {
        private final static String TAG = "ActTestActivity";
        private TextView tv_life; // 声明一个文本视图对象
        private String mStr = "";
    
        private void refreshLife(String desc) { // 刷新生命周期的日志信息
            Log.d(TAG, desc);
            mStr = String.format("%s%s %s %s\n", mStr, DateUtil.getNowTimeDetail(), TAG, desc);
            tv_life.setText(mStr);
        }
    
        @Override
        protected void onCreate(Bundle savedInstanceState) { // 创建活动页面
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_act_test);
            tv_life = findViewById(R.id.tv_life);
            refreshLife("onCreate");
        }
    
        @Override
        protected void onStart() { // 开始活动页面
            super.onStart();
            refreshLife("onStart");
        }
    
        @Override
        protected void onStop() { // 停止活动页面
            super.onStop();
            refreshLife("onStop");
        }
    
        @Override
        protected void onResume() { // 恢复活动页面
            super.onResume();
            refreshLife("onResume");
        }
    
        @Override
        protected void onPause() { // 暂停活动页面
            super.onPause();
            refreshLife("onPause");
        }
    
        @Override
        protected void onRestart() { // 重启活动页面
            super.onRestart();
            refreshLife("onRestart");
        }
    
        @Override
        protected void onDestroy() { // 销毁活动页面
            super.onDestroy();
            refreshLife("onDestroy");
        }
    
    }

[c822ccb00a4593bef5c4fbbac49fc58c.png]: https://img-blog.csdnimg.cn/img_convert/c822ccb00a4593bef5c4fbbac49fc58c.png
[968eb5f2ea0887f3ac25a2b17e325ab8.png]: https://img-blog.csdnimg.cn/img_convert/968eb5f2ea0887f3ac25a2b17e325ab8.png
[a123d3a4225fe0a83cf30e78031479fc.png]: https://img-blog.csdnimg.cn/img_convert/a123d3a4225fe0a83cf30e78031479fc.png
[e9efa23360ea6ffcc8755126da8a7702.png]: https://img-blog.csdnimg.cn/img_convert/e9efa23360ea6ffcc8755126da8a7702.png
[3fc250874beb14e30e9a85ba26a88699.png]: https://img-blog.csdnimg.cn/img_convert/3fc250874beb14e30e9a85ba26a88699.png
[bd079ba1d736665f4ca9aea0402fb0e2.png]: https://img-blog.csdnimg.cn/img_convert/bd079ba1d736665f4ca9aea0402fb0e2.png
[713b8573d3f8e00194f6650b60b8214f.png]: https://img-blog.csdnimg.cn/img_convert/713b8573d3f8e00194f6650b60b8214f.png
[dda0eed9b67f21f14d91a61e7bdfd797.png]: https://img-blog.csdnimg.cn/img_convert/dda0eed9b67f21f14d91a61e7bdfd797.png
[ecad2bdcce668722db6381e9d1753a48.png]: https://img-blog.csdnimg.cn/img_convert/ecad2bdcce668722db6381e9d1753a48.png
[ba2a07dfdde4e16bb2a0755fb9ac7b42.png]: https://img-blog.csdnimg.cn/img_convert/ba2a07dfdde4e16bb2a0755fb9ac7b42.png
[8cd305a2c1dc4c767c9cdf7b43e472d2.png]: https://img-blog.csdnimg.cn/img_convert/8cd305a2c1dc4c767c9cdf7b43e472d2.png
[aa98e4bd5da00918e6385d804b525da4.png]: https://img-blog.csdnimg.cn/img_convert/aa98e4bd5da00918e6385d804b525da4.png
[14c252e2c7cf945f0babcfaa06e5fb0a.png]: https://img-blog.csdnimg.cn/img_convert/14c252e2c7cf945f0babcfaa06e5fb0a.png
[139a2fe8e2c4807d5a7c8ffbb3b74463.png]: https://img-blog.csdnimg.cn/img_convert/139a2fe8e2c4807d5a7c8ffbb3b74463.png
[5aff7ac57606104c1a6028ad4ccf9163.png]: https://img-blog.csdnimg.cn/img_convert/5aff7ac57606104c1a6028ad4ccf9163.png
[69961ff6a796927c8346280430ad7709.png]: https://img-blog.csdnimg.cn/img_convert/69961ff6a796927c8346280430ad7709.png
[cf61a98ba87733254dd3ed082da96ee6.png]: https://img-blog.csdnimg.cn/img_convert/cf61a98ba87733254dd3ed082da96ee6.png
[457ba4a9103069a29eb6b6300a311613.png]: https://img-blog.csdnimg.cn/img_convert/457ba4a9103069a29eb6b6300a311613.png
[2d00eb112b68417af0eac4ff3dcb700f.png]: https://img-blog.csdnimg.cn/img_convert/2d00eb112b68417af0eac4ff3dcb700f.png