Android 悬浮窗显示毫秒级时间

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转载最新推荐文章于 2026-10-29 16:17:28 发布 1.6w 阅读 AI 写同款· GEO 优化 ›

这篇文章代码借用了郭霖大神的悬浮窗代码，但是郭霖大神的代码是四年前的了，现在重新编译会有一些小bug,别担心我已经调好了，对于原理可以参考郭霖大神的文章
Android桌面悬浮窗效果实现，仿360手机卫士悬浮窗效果
运行效果如下：
这里写图片描述

1.新建工程”FloatWindowDemo2”,
工程如下：
这里写图片描述
2. “MainAcitivity.java”

package com.example.liliangk.floatwindowdemo2;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Intent intent = new Intent(MainActivity.this, FloatWindowService.class);
        startService(intent);
        finish();
        Button startFloatWindow = (Button) findViewById(R.id.start_float_window);

        startFloatWindow.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                /*Intent intent = new Intent(MainActivity.this, FloatWindowService.class);
                startService(intent);
                finish();*/
            }
        });
    }
}

3.新建类“FloatWindowBigView”

package com.example.liliangk.floatwindowdemo2;

import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

/**
 * Created by liliangk on 2017/9/18.
 */


public class FloatWindowBigView extends LinearLayout {

    /**
     * 记录大悬浮窗的宽度
     */
    public static int viewWidth;

    /**
     * 记录大悬浮窗的高度
     */
    public static int viewHeight;

    public FloatWindowBigView(final Context context) {
        super(context);
        LayoutInflater.from(context).inflate(R.layout.float_window_big, this);
        View view = findViewById(R.id.big_window_layout);
        viewWidth = view.getLayoutParams().width;
        viewHeight = view.getLayoutParams().height;
        Button close = (Button) findViewById(R.id.close);
        Button back = (Button) findViewById(R.id.back);
        close.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // 点击关闭悬浮窗的时候，移除所有悬浮窗，并停止Service
                MyWindowManager.removeBigWindow(context);
                MyWindowManager.removeSmallWindow(context);
                Intent intent = new Intent(getContext(), FloatWindowService.class);
                context.stopService(intent);
            }
        });
        back.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // 点击返回的时候，移除大悬浮窗，创建小悬浮窗
                MyWindowManager.removeBigWindow(context);
                MyWindowManager.createSmallWindow(context);
            }
        });
    }
}

4.新建类“FloatWindowSmallView”

package com.example.liliangk.floatwindowdemo2;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.lang.reflect.Field;

/**
 * Created by liliangk on 2017/9/18.
 */


public class FloatWindowSmallView extends LinearLayout {

    /**
     * 记录小悬浮窗的宽度
     */
    public static int viewWidth;

    /**
     * 记录小悬浮窗的高度
     */
    public static int viewHeight;

    /**
     * 记录系统状态栏的高度
     */
    private static int statusBarHeight;

    /**
     * 用于更新小悬浮窗的位置
     */
    private WindowManager windowManager;

    /**
     * 小悬浮窗的参数
     */
    private WindowManager.LayoutParams mParams;

    /**
     * 记录当前手指位置在屏幕上的横坐标值
     */
    private float xInScreen;

    /**
     * 记录当前手指位置在屏幕上的纵坐标值
     */
    private float yInScreen;

    /**
     * 记录手指按下时在屏幕上的横坐标的值
     */
    private float xDownInScreen;

    /**
     * 记录手指按下时在屏幕上的纵坐标的值
     */
    private float yDownInScreen;

    /**
     * 记录手指按下时在小悬浮窗的View上的横坐标的值
     */
    private float xInView;

    /**
     * 记录手指按下时在小悬浮窗的View上的纵坐标的值
     */
    private float yInView;

    public FloatWindowSmallView(Context context) {
        super(context);
        windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        LayoutInflater.from(context).inflate(R.layout.float_window_small, this);
        View view = findViewById(R.id.small_window_layout);
        viewWidth = view.getLayoutParams().width;
        viewHeight = view.getLayoutParams().height;
        TextView percentView = (TextView) findViewById(R.id.percent);
        percentView.setText(MyWindowManager.getUsedPercentValue(context));
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // 手指按下时记录必要数据,纵坐标的值都需要减去状态栏高度
                xInView = event.getX();
                yInView = event.getY();
                xDownInScreen = event.getRawX();
                yDownInScreen = event.getRawY() - getStatusBarHeight();
                xInScreen = event.getRawX();
                yInScreen = event.getRawY() - getStatusBarHeight();
                break;
            case MotionEvent.ACTION_MOVE:
                xInScreen = event.getRawX();
                yInScreen = event.getRawY() - getStatusBarHeight();
                // 手指移动的时候更新小悬浮窗的位置
                updateViewPosition();
                break;
            case MotionEvent.ACTION_UP:
                // 如果手指离开屏幕时，xDownInScreen和xInScreen相等，且yDownInScreen和yInScreen相等，则视为触发了单击事件。
                if (xDownInScreen == xInScreen && yDownInScreen == yInScreen) {
                    openBigWindow();
                }
                break;
            default:
                break;
        }
        return true;
    }

    /**
     * 将小悬浮窗的参数传入，用于更新小悬浮窗的位置。
     *
     * @param params 小悬浮窗的参数
     */
    public void setParams(WindowManager.LayoutParams params) {
        mParams = params;
    }

    /**
     * 更新小悬浮窗在屏幕中的位置。
     */
    private void updateViewPosition() {
        mParams.x = (int) (xInScreen - xInView);
        mParams.y = (int) (yInScreen - yInView);
        windowManager.updateViewLayout(this, mParams);
    }

    /**
     * 打开大悬浮窗，同时关闭小悬浮窗。
     */
    private void openBigWindow() {
        MyWindowManager.createBigWindow(getContext());
        MyWindowManager.removeSmallWindow(getContext());
    }

    /**
     * 用于获取状态栏的高度。
     *
     * @return 返回状态栏高度的像素值。
     */
    private int getStatusBarHeight() {
        if (statusBarHeight == 0) {
            try {
                Class<?> c = Class.forName("com.android.internal.R$dimen");
                Object o = c.newInstance();
                Field field = c.getField("status_bar_height");
                int x = (Integer) field.get(o);
                statusBarHeight = getResources().getDimensionPixelSize(x);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return statusBarHeight;
    }
}

5.新建类“FloatWindowService”

package com.example.liliangk.floatwindowdemo2;


import android.app.ActivityManager;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Handler;
import android.os.IBinder;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;


public class FloatWindowService extends Service {

    /**
     * 用于在线程中创建或移除悬浮窗。
     */
    private Handler handler = new Handler();

    /**
     * 定时器，定时进行检测当前应该创建还是移除悬浮窗。
     */
    private Timer timer;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // 开启定时器，每隔0.5秒刷新一次
        if (timer == null) {
            timer = new Timer();
            timer.scheduleAtFixedRate(new RefreshTask(), 0, 1);
        }
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        // Service被终止的同时也停止定时器继续运行
        timer.cancel();
        timer = null;
    }

    class RefreshTask extends TimerTask {

        @Override
        public void run() {

            handler.post(new Runnable() {
                @Override
                public void run() {
                    MyWindowManager.createSmallWindow(getApplicationContext());
                }
            });
            // 当前界面是桌面，且没有悬浮窗显示，则创建悬浮窗。
         if (isHome() && !MyWindowManager.isWindowShowing()) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        MyWindowManager.createSmallWindow(getApplicationContext());
                    }
                });
            }
            // 当前界面不是桌面，且有悬浮窗显示，则移除悬浮窗。
           /* else if (!isHome() && MyWindowManager.isWindowShowing()) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        MyWindowManager.removeSmallWindow(getApplicationContext());
                        MyWindowManager.removeBigWindow(getApplicationContext());
                    }
                });
            }*/


            if(MyWindowManager.isWindowShowing())
            {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        MyWindowManager.updateUsedPercent(getApplicationContext());
                    }
                });
            }

            // 当前界面是桌面，且有悬浮窗显示，则更新内存数据。
           /* else if (isHome() && MyWindowManager.isWindowShowing()) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        MyWindowManager.updateUsedPercent(getApplicationContext());
                    }
                });
            }*/
        }

    }

    /**
     * 判断当前界面是否是桌面
     */
 private boolean isHome() {
        ActivityManager mActivityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> rti = mActivityManager.getRunningTasks(1);
        return getHomes().contains(rti.get(0).topActivity.getPackageName());
    }

    /**
     * 获得属于桌面的应用的应用包名称
     *
     * @return 返回包含所有包名的字符串列表
     */
    private List<String> getHomes() {
        List<String> names = new ArrayList<String>();
        PackageManager packageManager = this.getPackageManager();
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_HOME);
        List<ResolveInfo> resolveInfo = packageManager.queryIntentActivities(intent,
                PackageManager.MATCH_DEFAULT_ONLY);
        for (ResolveInfo ri : resolveInfo) {
            names.add(ri.activityInfo.packageName);
        }
        return names;
    }
}

6.新建类“MyReceiver”，用于设置应用开机启动

package com.example.liliangk.floatwindowdemo2;

/**
 * Created by liliangk on 2017/9/18.
 */

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

/**
 * Created by liliangk on 2017/9/18.
 */

public class MyReceiver extends BroadcastReceiver {
    public MyReceiver()
    {
    }

    @Override
    public void onReceive(Context context, Intent intent)
    {
        if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))
        {
            Intent i = new Intent(context, MainActivity.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(i);
        }
    }
}

7.新建类“ MyWindowManager”

package com.example.liliangk.floatwindowdemo2;

import android.app.ActivityManager;
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.WindowManager;
import android.widget.TextView;

import java.util.Calendar;

/**
 * Created by liliangk on 2017/9/18.
 */


public class MyWindowManager {

    /**
     * 小悬浮窗View的实例
     */
    private static FloatWindowSmallView smallWindow;

    /**
     * 大悬浮窗View的实例
     */
    private static FloatWindowBigView bigWindow;

    /**
     * 小悬浮窗View的参数
     */
    private static WindowManager.LayoutParams smallWindowParams;

    /**
     * 大悬浮窗View的参数
     */
    private static WindowManager.LayoutParams bigWindowParams;

    /**
     * 用于控制在屏幕上添加或移除悬浮窗
     */
    private static WindowManager mWindowManager;

    /**
     * 用于获取手机可用内存
     */
    private static ActivityManager mActivityManager;

    /**
     * 创建一个小悬浮窗。初始位置为屏幕的右部中间位置。
     *
     * @param context
     *            必须为应用程序的Context.
     */
    public static void createSmallWindow(Context context) {
        WindowManager windowManager = getWindowManager(context);
        int screenWidth = windowManager.getDefaultDisplay().getWidth();
        int screenHeight = windowManager.getDefaultDisplay().getHeight();
        if (smallWindow == null) {
            smallWindow = new FloatWindowSmallView(context);
            if (smallWindowParams == null) {
                smallWindowParams = new WindowManager.LayoutParams();
                smallWindowParams.type = WindowManager.LayoutParams.TYPE_PHONE;
                smallWindowParams.format = PixelFormat.RGBA_8888;
                smallWindowParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
                smallWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
                smallWindowParams.width = FloatWindowSmallView.viewWidth;
                smallWindowParams.height = FloatWindowSmallView.viewHeight;
                smallWindowParams.x = screenWidth;
                smallWindowParams.y = screenHeight / 2;
            }
            smallWindow.setParams(smallWindowParams);
            windowManager.addView(smallWindow, smallWindowParams);
        }
    }

    /**
     * 将小悬浮窗从屏幕上移除。
     *
     * @param context
     *            必须为应用程序的Context.
     */
    public static void removeSmallWindow(Context context) {
        if (smallWindow != null) {
            WindowManager windowManager = getWindowManager(context);
            windowManager.removeView(smallWindow);
            smallWindow = null;
        }
    }

    /**
     * 创建一个大悬浮窗。位置为屏幕正中间。
     *
     * @param context
     *            必须为应用程序的Context.
     */
    public static void createBigWindow(Context context) {
        WindowManager windowManager = getWindowManager(context);
        int screenWidth = windowManager.getDefaultDisplay().getWidth();
        int screenHeight = windowManager.getDefaultDisplay().getHeight();
        if (bigWindow == null) {
            bigWindow = new FloatWindowBigView(context);
            if (bigWindowParams == null) {
                bigWindowParams = new WindowManager.LayoutParams();
                bigWindowParams.x = screenWidth / 2 - FloatWindowBigView.viewWidth / 2;
                bigWindowParams.y = screenHeight / 2 - FloatWindowBigView.viewHeight / 2;
                bigWindowParams.type = WindowManager.LayoutParams.TYPE_PHONE;
                bigWindowParams.format = PixelFormat.RGBA_8888;
                bigWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
                bigWindowParams.width = FloatWindowBigView.viewWidth;
                bigWindowParams.height = FloatWindowBigView.viewHeight;
            }
            windowManager.addView(bigWindow, bigWindowParams);
        }
    }

    /**
     * 将大悬浮窗从屏幕上移除。
     *
     * @param context
     *            必须为应用程序的Context.
     */
    public static void removeBigWindow(Context context) {
        if (bigWindow != null) {
            WindowManager windowManager = getWindowManager(context);
            windowManager.removeView(bigWindow);
            bigWindow = null;
        }
    }

    /**
     * 更新小悬浮窗的TextView上的数据，显示内存使用的百分比。
     *
     * @param context
     *            可传入应用程序上下文。
     */
    public static void updateUsedPercent(Context context) {
        if (smallWindow != null) {
            TextView percentView = (TextView) smallWindow.findViewById(R.id.percent);
            percentView.setText(getUsedPercentValue(context));
        }
    }

    /**
     * 是否有悬浮窗(包括小悬浮窗和大悬浮窗)显示在屏幕上。
     *
     * @return 有悬浮窗显示在桌面上返回true，没有的话返回false。
     */
    public static boolean isWindowShowing() {
        return smallWindow != null || bigWindow != null;
    }

    /**
     * 如果WindowManager还未创建，则创建一个新的WindowManager返回。否则返回当前已创建的WindowManager。
     *
     * @param context
     *            必须为应用程序的Context.
     * @return WindowManager的实例，用于控制在屏幕上添加或移除悬浮窗。
     */
    private static WindowManager getWindowManager(Context context) {
        if (mWindowManager == null) {
            mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        }
        return mWindowManager;
    }

    /**
     * 如果ActivityManager还未创建，则创建一个新的ActivityManager返回。否则返回当前已创建的ActivityManager。
     *
     * @param context
     *            可传入应用程序上下文。
     * @return ActivityManager的实例，用于获取手机可用内存。
     */
    private static ActivityManager getActivityManager(Context context) {
        if (mActivityManager == null) {
            mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        }
        return mActivityManager;
    }

    /**
     * 计算已使用内存的百分比，并返回。
     *
     * @param context
     *            可传入应用程序上下文。
     * @return 已使用内存的百分比，以字符串形式返回。
     */
    public static String getUsedPercentValue(Context context) {
        String dir = "/proc/meminfo";
        try {
            /*FileReader fr = new FileReader(dir);
            BufferedReader br = new BufferedReader(fr, 2048);
            String memoryLine = br.readLine();
            String subMemoryLine = memoryLine.substring(memoryLine.indexOf("MemTotal:"));
            br.close();
            long totalMemorySize = Integer.parseInt(subMemoryLine.replaceAll("\\D+", ""));
            long availableSize = getAvailableMemory(context) / 1024;
            int percent = (int) ((totalMemorySize - availableSize) / (float) totalMemorySize * 100);
            return percent + "%";*/
            Calendar Cld=Calendar.getInstance();
            int YY=Cld.get(Calendar.YEAR);
            int MM=Cld.get(Calendar.MONTH)+1;
            int DD=Cld.get(Calendar.DATE);
            int HH=Cld.get(Calendar.HOUR_OF_DAY);
            int mm=Cld.get(Calendar.MINUTE);
            int SS=Cld.get(Calendar.SECOND);
            int MI=Cld.get(Calendar.MILLISECOND);
            String curTime=YY+" "+MM+" "+DD+" "+HH+" "+mm+" "+SS+" "+MI+"";
            return curTime;

        } catch (Exception e) {
            e.printStackTrace();
        }
        return "悬浮窗";
    }

    /**
     * 获取当前可用内存，返回数据以字节为单位。
     *
     * @param context
     *            可传入应用程序上下文。
     * @return 当前可用内存。
     */
    private static long getAvailableMemory(Context context) {
        ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();
        getActivityManager(context).getMemoryInfo(mi);
        return mi.availMem;
    }

}

8.新建布局文件float_window_big.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="200dip"
    android:layout_height="100dip"
    android:orientation="vertical"
    android:id="@+id/big_window_layout"
    android:background="#FF0000"
    >
    <Button
        android:id="@+id/close"
        android:layout_width="100dip"
        android:layout_height="40dip"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="12dip"
        android:text="关闭悬浮窗"
        />
    <Button
        android:id="@+id/back"
        android:layout_width="100dip"
        android:layout_height="40dip"
        android:layout_gravity="center_horizontal"
        android:text="返回"
        />

</LinearLayout>

9.新建布局文件“float_window_small.xml”

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:id="@+id/small_window_layout"
    android:layout_width="100dip"
    android:layout_height="50dip">
    <TextView
        android:id="@+id/percent"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:gravity="center"
        android:background="#FF0000"

    android:textColor="#ffffff"
        />

</LinearLayout>

10.”activity_main.xml”

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.liliangk.floatwindowdemo2.MainActivity">

    <Button
        android:id="@+id/start_float_window"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Start Float Window" />
</RelativeLayout>

11.修改“AndroidMainfest.xml”

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.liliangk.floatwindowdemo2">
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.GET_TASKS"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver
            android:name=".MyReceiver"
            android:enabled="true"
            android:exported="true"
            android:permission="android.permission.RECIVE_BOOT_COMPLETED">
            <intent-filter >
                <action android:name="android.intent.action.BOOT_COMPLETED"></action>
                <category android:name="android.intent.category.HOME" />
            </intent-filter>
        </receiver>

        <service
            android:name=".FloatWindowService"
            android:enabled="true"
            android:exported="true"></service>
    </application>

</manifest>