Launcher知识的demo，主要仿的手机管家小伙家与悬浮窗的效果。东西比较简单，直接贴代码
主要用到了windowManager 中的更新updateViewLayout(view，params),和 添加windowManager.addView（）和删除windowManager.removeView()
移动launcher主要是updateViewLayout(view，params),中的params来实现
贴几个主要类，全部源码请自己下载
package com.pzf.flow;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
/**
* 开启服务，用来判断是否是主页面，如果在主页面则显示悬浮窗，否则隐藏悬浮框
* @author pangzf
* @time 2014年10月11日 上午11:19:42
*/
public class MyService extends Service {
private Timer timer;
private Handler mHandler = new Handler();
public MyService() {
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// 开启定时器
// 判断是否在主页面，如果在主页面同事small没有显示，则显示small
// 开启定时器，每隔0.5秒刷新一次
if (timer == null) {
timer = new Timer();
timer.scheduleAtFixedRate(new MyTimerTask(), 0, 500);
}
return super.onStartCommand(intent, flags, startId);
}
private class MyTimerTask extends TimerTask {
@Override
public void run() {
showWindow();
}
}
/**
* 判断是否在主页面，如果在主页面同事small没有显示，则显示small
*/
private void showWindow() {
if (MyWindowManager.isHome(getApplicationContext()) && !MyWindowManager.isWindowShowing()) {
mHandler.post(new Runnable() {
@Override
public void run() {
MyWindowManager.createSmallWindow(getApplicationContext());
}
});
} else if (!MyWindowManager.isHome(getApplicationContext()) && MyWindowManager.isWindowShowing()) {
// 如果不是主页，但是已经有窗口了，关掉之前的窗口
mHandler.post(new Runnable() {
@Override
public void run() {
MyWindowManager.removeSmallWindow(getApplicationContext());
}
});
} else if (MyWindowManager.isHome(getApplicationContext()) && MyWindowManager.isWindowShowing()) {
mHandler.post(new Runnable() {
@Override
public void run() {
MyWindowManager.updatePercent(getApplicationContext());
}
});
}
}
@Override
public void onDestroy() {
if (timer != null) {
timer.cancel();
timer = null;
}
super.onDestroy();
}
}
package com.pzf.flow;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import android.app.ActivityManager;
import android.app.ActivityManager.MemoryInfo;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.TextView;
/**
* 管理类，1.用来创建launcher 2.删除launcher 3.更新launcher 4.改变火箭发射台的背景图 5.判断是否主页 6.界面是否存在悬浮框 7。获得运行内存等
* @author pangzf
* @time 2014年10月11日 上午11:20:37
*/
public class MyWindowManager {
private static WindowManager mWindowManager;
private static LayoutInflater mInflater;
private static SmallView smallWindow;
private static WindowManager.LayoutParams smallWindowParams;
static int screenWidth;
static int screenHeight;
private static ActivityManager mActivityManager;
private static BigView bigView;
private static LayoutParams bigWindowParams;
private static RocketLauncher mRocketLauncher;
private static LayoutParams mRocketWindowParams;
public MyWindowManager(Context context) {
mWindowManager = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
/**
* 判断是否是主页面
*/
public static boolean isHome(Context context) {
ActivityManager activityManager = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> runningTasks = activityManager.getRunningTasks(1);
return getHome(context).contains(
runningTasks.get(0).topActivity.getPackageName());
}
/***
* 获得主页面
*
* @return
*/
private static List<String> getHome(Context context) {
PackageManager packageManager = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List<String> names = new ArrayList<String>();
List<ResolveInfo> list = packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY);
if (list != null) {
for (ResolveInfo info : list) {
names.add(info.activityInfo.packageName);
}
}
return names;
}
/**
* 是否有窗口在屏幕上显示
*
* @return
*/
public static boolean isWindowShowing() {
return smallWindow != null || bigView != null;
}
public static void removeSmallWindow(Context context) {
if (smallWindow != null) {
WindowManager windowManager = getWindowManager(context);
windowManager.removeView(smallWindow);
smallWindow = null;
}
}
/**
* 创建小的window
*/
// public void createSmallWindow() {
// mWindowManager=getWindowManager(mContext);
// screenWidth = mWindowManager.getDefaultDisplay().getWidth();
// screenHeight = mWindowManager.getDefaultDisplay().getHeight();
// if (smallView == null) {
// smallView = new SmallView(mContext);
//
//
// if (mSamllWindowParams == null) {
// mSamllWindowParams = new LayoutParams();
// mSamllWindowParams.type = LayoutParams.TYPE_PHONE;
// mSamllWindowParams.format = PixelFormat.RGBA_8888;
// mSamllWindowParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE
// | LayoutParams.FLAG_NOT_TOUCH_MODAL;
// mSamllWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
// mSamllWindowParams.width = smallView.getWidth();
// mSamllWindowParams.height = smallView.getHeight();
// mSamllWindowParams.x = screenWidth;
// mSamllWindowParams.y = screenHeight/2;
// }
// smallView.setParams(mSamllWindowParams);
// mWindowManager.addView(smallView, mSamllWindowParams);
// }
//
// }
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 SmallView(context);
if (smallWindowParams == null) {
smallWindowParams = new LayoutParams();
smallWindowParams.type = LayoutParams.TYPE_SYSTEM_ALERT;
smallWindowParams.format = PixelFormat.RGBA_8888;
smallWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL
| LayoutParams.FLAG_NOT_FOCUSABLE;
smallWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
smallWindowParams.width = smallWindow.viewWidth;
smallWindowParams.height = smallWindow.viewHeight;
smallWindowParams.x = screenWidth;
smallWindowParams.y = screenHeight / 2;
}
smallWindow.setParams(smallWindowParams);
windowManager.addView(smallWindow, smallWindowParams);
}
}
private static WindowManager getWindowManager(Context context) {
if (mWindowManager == null) {
mWindowManager = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
}
return mWindowManager;
}
/**
* 计算已使用内存的百分比
*
* @return
*/
public static String getUserPercent(Context context) {
String dir = "/proc/meminfo";
try {
// FileReader fr=new FileReader(dir);
// BufferedReader br = new BufferedReader(fr, 2048);
// String data = br.readLine();
// String subMemoryLine = data.substring(data.indexOf("MemTotal:"));
// br.close();
// long totalMemorySize =
// Integer.parseInt(subMemoryLine.replaceAll("\\D+", ""));
// long avaliableMemory= getAvalibaleMemory(context)/1024;
// int
// percent=(int)((totalMemorySize-avaliableMemory)/((float)totalMemorySize*100));
// return percent+"%";
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 = getAvalibaleMemory(context) / 1024;
int percent = (int) ((totalMemorySize - availableSize)
/ (float) totalMemorySize * 100);
return percent + "%";
} catch (Exception e) {
e.printStackTrace();
}
return "悬浮窗";
}
/**
* 返回可用的内存
*
* @param context
* @return
*/
private static long getAvalibaleMemory(Context context) {
MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
getActivityManager(context).getMemoryInfo(memoryInfo);
return memoryInfo.availMem;
}
private static ActivityManager getActivityManager(Context context) {
if (mActivityManager == null) {
mActivityManager = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
}
return mActivityManager;
}
public static void updatePercent(Context context) {
if (smallWindow != null) {
((TextView) smallWindow.findViewById(R.id.tv_small_percent))
.setText(getUserPercent(context));
}
}
public static void createBigView(Context context) {
WindowManager windowManager = getWindowManager(context);
int screenWidth = windowManager.getDefaultDisplay().getWidth();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
if (bigView == null) {
bigView = new BigView(context);
if (bigWindowParams == null) {
bigWindowParams = new LayoutParams();
bigWindowParams.x = screenWidth / 2 - BigView.viewWidth / 2;
bigWindowParams.y = screenHeight / 2 - BigView.viewHeight / 2;
bigWindowParams.type = LayoutParams.TYPE_PHONE;
bigWindowParams.format = PixelFormat.RGBA_8888;
bigWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
bigWindowParams.width = BigView.viewWidth;
bigWindowParams.height = BigView.viewHeight;
}
windowManager.addView(bigView, 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 (bigView != null) {
WindowManager windowManager = getWindowManager(context);
windowManager.removeView(bigView);
bigView = null;
}
}
// 火箭---------------
/**
* 创建小火箭
*
* @param context
*/
// public static void createRocketWindow(Context context) {
// WindowManager windowManager = getWindowManager(context);
// int screenWidth = windowManager.getDefaultDisplay().getWidth();
// int screenHeight = windowManager.getDefaultDisplay().getHeight();
// if (mRocketLauncher == null) {
// mRocketLauncher = new RocketLauncher(context);
// if (mRocketWindowParams == null) {
// mRocketWindowParams = new LayoutParams();
// mRocketWindowParams.x = screenWidth / 2 - mRocketLauncher.mRocketWith/2;
// mRocketWindowParams.y = screenHeight - mRocketLauncher.mRocketHeight;
//
// mRocketWindowParams.type = LayoutParams.TYPE_PHONE;
// mRocketWindowParams.format = PixelFormat.RGBA_8888;
// mRocketWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL
// | LayoutParams.FLAG_NOT_FOCUSABLE;
// mRocketWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
// mRocketWindowParams.width = mRocketLauncher.mRocketWith;
// mRocketWindowParams.height = mRocketLauncher.mRocketHeight;
// }
// windowManager.addView(mRocketLauncher, mRocketWindowParams);
// }
// }
//
/**
* 创建一个火箭发射台，位置为屏幕底部。
*/
public static void createRocketWindow(Context context) {
WindowManager windowManager = getWindowManager(context);
int screenWidth = windowManager.getDefaultDisplay().getWidth();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
if (mRocketLauncher == null) {
mRocketLauncher = new RocketLauncher(context);
if (mRocketWindowParams == null) {
mRocketWindowParams = new LayoutParams();
mRocketWindowParams.x = screenWidth / 2 - RocketLauncher.mRocketWith / 2;
mRocketWindowParams.y = screenHeight - RocketLauncher.mRocketHeight;
mRocketWindowParams.type = LayoutParams.TYPE_PHONE;
mRocketWindowParams.format = PixelFormat.RGBA_8888;
mRocketWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
mRocketWindowParams.width = RocketLauncher.mRocketWith;
mRocketWindowParams.height = RocketLauncher.mRocketHeight;
}
windowManager.addView(mRocketLauncher, mRocketWindowParams);
}
}
/**
* 移除小火箭l
*
* @param context
*/
public static void removeRocketWindow(Context context) {
WindowManager windowManager = getWindowManager(context);
if (mRocketLauncher != null) {
windowManager.removeView(mRocketLauncher);
mRocketLauncher = null;
}
}
/**
* 更新火箭发射台的显示状态。
*/
public static void updateLauncher() {
if (mRocketLauncher != null) {
mRocketLauncher.updateRocketLaucher(isReadyToLaunch());
}
}
/**
* 判断小火箭是否准备好发射了。
*
* @return 当火箭被发到发射台上返回true，否则返回false。
*/
public static boolean isReadyToLaunch() {
if ((smallWindowParams.x > mRocketWindowParams.x && smallWindowParams.x
+ smallWindowParams.width < mRocketWindowParams.x
+ mRocketWindowParams.width)
&& (smallWindowParams.y + smallWindowParams.height > mRocketWindowParams.y)) {
return true;
}
return false;
}
}
package com.pzf.flow;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
/**
* 小火箭的launcer的布局类，此处需要注意mRocketWith，mRocketHeight这两个字段需要public供外界使用，因为在你移动悬浮框的时候需要显示小火箭，这时候需要小火箭的宽和高
* @author pangzf
* @time 2014年10月11日 上午11:22:32
*/
public class RocketLauncher extends LinearLayout {
public static int mRocketWith;
public static int mRocketHeight;
private ImageView mRocket;
public RocketLauncher(Context context) {
super(context);
LayoutInflater.from(context).inflate(R.layout.launcher, this);
mRocket = (ImageView) findViewById(R.id.launcher_img);
mRocketWith = mRocket.getLayoutParams().width;
mRocketHeight = mRocket.getLayoutParams().height;
}
/**
* 是否是发射状态
* @param isReadyLaunch
*/
public void updateRocketLaucher(boolean isReadyLaunch){
mRocket.setImageResource(isReadyLaunch?R.drawable.launcher_bg_fire:R.drawable.launcher_bg_hold);
}
}
package com.pzf.flow;
import java.lang.reflect.Field;
import android.content.Context;
import android.os.AsyncTask;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* 悬浮框类
* 1.显示内存使用情况
* 2.移动悬浮框，位置改变 OnTouch();
* 3.移动小悬浮框，变成小火箭 updateView() updateStatus();
* 4.移动到发射台，小火箭发射 LaunchTask
* @author pangzf
* @time 2014年10月11日 上午11:23:48
*/
public class SmallView extends LinearLayout {
private Context mContext;
private int statusBarHeight;
private float mXInView;
private float mYInView;
private float mXDownInScreen;
private float mYDownInScreen;
private float mXInScreen;
private float mYInScreen;
/**
* 小悬浮窗的参数
*/
private WindowManager.LayoutParams mParams;
public int viewWidth;
public int viewHeight;
private WindowManager mWindowManager;
private LinearLayout view;
private boolean isPressed;
private ImageView mIvRocket;
private int rocketWidth;
private int rocketHeight;
public SmallView(Context context) {
super(context);
this.mContext=context;
mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
LayoutInflater.from(context).inflate(R.layout.small, this);
view = (LinearLayout) findViewById(R.id.ll_small_main);
viewWidth = view.getLayoutParams().width;
viewHeight = view.getLayoutParams().height;
mIvRocket = (ImageView) findViewById(R.id.rocket_img);
rocketWidth = mIvRocket.getLayoutParams().width;
rocketHeight = mIvRocket.getLayoutParams().height;
TextView mTvPercent = (TextView) view
.findViewById(R.id.tv_small_percent);
mTvPercent.setText(MyWindowManager.getUserPercent(context));
}
/**
* 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;
}
// 做单击处理和移动small位置
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
isPressed=true;
mXInView = event.getX();
mYInView = event.getY();
mXDownInScreen = event.getRawX();
mYDownInScreen = event.getRawY() - getStatusBarHeight();
mXInScreen = event.getRawX();
mYInScreen = event.getRawY()-getStatusBarHeight();
break;
case MotionEvent.ACTION_MOVE:
//移动small
mXInScreen=event.getRawX();
mYInScreen=event.getRawY() - getStatusBarHeight();
updateStatus();
updateView();
break;
case MotionEvent.ACTION_UP:
isPressed=false;
if(MyWindowManager.isReadyToLaunch()){
//发射小火箭
launchRocket();
}else{
updateStatus();
//判断点击事件
if(mXDownInScreen==mXInScreen&&mYDownInScreen==mYInScreen){
//打开big
openBigWindow();
}
}
break;
default:
break;
}
return true;
}
/**
* 发射小火箭
*/
private void launchRocket() {
MyWindowManager.removeRocketWindow(getContext());
new LuanchTask().execute();
}
private class LuanchTask extends AsyncTask<Void, Void, Void>{
@Override
protected Void doInBackground(Void... params) {
while(mParams.y>0){
mParams.y=mParams.y-10;
publishProgress();
SystemClock.sleep(8);
}
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
//根据进度更新小火箭的位置，实现发射效果
mWindowManager.updateViewLayout(SmallView.this, mParams);
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// 火箭升空结束后，回归到悬浮窗状态
updateStatus();
mParams.x = (int) (mXDownInScreen - mXInView);
mParams.y = (int) (mYDownInScreen - mYInView);
mWindowManager.updateViewLayout(SmallView.this, mParams);
}
}
/**
* 更改小火箭的状态
*/
private void updateStatus() {
//如果是按下的状态，而且小火箭是不存在的，则显示小火箭，隐藏悬浮框
if(isPressed&&mIvRocket.getVisibility()!=View.VISIBLE){
mParams.width=rocketWidth;
mParams.height=rocketHeight;
mWindowManager.updateViewLayout(this, mParams);
view.setVisibility(View.GONE);
mIvRocket.setVisibility(View.VISIBLE);
MyWindowManager.createRocketWindow(getContext());
}else if(!isPressed){
//显示悬浮框，隐藏小火箭
mParams.width=viewWidth;
mParams.height=viewHeight;
mWindowManager.updateViewLayout(this, mParams);
view.setVisibility(View.VISIBLE);
mIvRocket.setVisibility(View.GONE);
MyWindowManager.removeRocketWindow(getContext());
}
}
/**
* 打开大悬浮窗，同时关闭小悬浮窗。
*/
private void openBigWindow() {
MyWindowManager.createBigView(getContext());
MyWindowManager.removeSmallWindow(getContext());
}
/**
* 移动samll在屏幕上的位置
*/
private void updateView() {
mParams.x=(int) (mXInScreen-mXInView);
mParams.y=(int) (mYInScreen-mYInView);
mWindowManager.updateViewLayout(this, mParams);
MyWindowManager.updateLauncher();
}
/**
* 获得状态栏的高度
*
* @return
*/
private float getStatusBarHeight() {
if (statusBarHeight == 0) {
try {
Class<?> clazz = Class.forName("com.android.internal.R$dimen");
Object o = clazz.newInstance();
Field field = clazz.getField("status_bar_height");
Integer size = (Integer) field.get(o);
statusBarHeight = getResources().getDimensionPixelSize(size);
} catch (Exception e) {
e.printStackTrace();
}
}
return statusBarHeight;
}
}
源码地址：点击打开链接
原文地址：http://blog.csdn.net/pangzaifei/article/details/39990993
