像360悬浮窗,悬浮在窗口上,点击小的悬浮框,显示大悬浮框,打悬浮框中关闭悬浮框或者退出悬浮。
1、MainActivity
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button startFloatWindow = (Button) findViewById(R.id.start_float_window);
startFloatWindow.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(MainActivity.this, FloatWindowService.class);
startService(intent);
finish();
}
});
}
}
====================XML======================
"http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".MainActivity" >
2、FloatWindowService
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
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, 500);
}
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() {
// 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());
}
});
}
// 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 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 getHomes() {
List names = new ArrayList();
PackageManager packageManager = this.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List resolveInfo = packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo ri : resolveInfo) {
names.add(ri.activityInfo.packageName);
}
return names;
}
}
3、MyWindowManager
import android.app.ActivityManager;
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
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 LayoutParams smallWindowParams;
/**
* 大悬浮窗View的参数
*/
private static 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 LayoutParams();
smallWindowParams.type = LayoutParams.TYPE_PHONE;
smallWindowParams.format = PixelFormat.RGBA_8888;
smallWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL
| 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 LayoutParams();
bigWindowParams.x = screenWidth / 2 - FloatWindowBigView.viewWidth / 2;
bigWindowParams.y = screenHeight / 2 - FloatWindowBigView.viewHeight / 2;
bigWindowParams.type = 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 + "%";
} catch (IOException 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;
}
}
4、浮窗控件
(1)
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;
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;
}
}
===============XML=======
"1.0" encoding="UTF-8"?>
"http://schemas.android.com/apk/res/android"
android:id="@+id/small_window_layout"
android:layout_width="60dip"
android:layout_height="25dip"
android:background="@drawable/bg_small"
>
"@+id/percent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:textColor="#ffffff"
/>
(2)
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
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);
}
});
}
}
=======================XML================================
"1.0" encoding="UTF-8"?>
"http://schemas.android.com/apk/res/android"
android:id="@+id/big_window_layout"
android:layout_width="200dip"
android:layout_height="100dip"
android:background="@drawable/bg_big"
android:orientation="vertical"
>
5、权限