Android 悬浮窗显示毫秒级时间
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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:
1.新建工程”FloatWindowDemo2”,
工程如下:
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>
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