/*** @Function 快捷中心面板* 继承至LinearLayout，上面的几个view都是继承于它，便于简洁只写了这个，在此一并说明*/
public class FloatWindowQuickCenter extends LinearLayout {/*** @Function 快捷中心实例化* 这里我没有动态加载view，而是用了xml布局*/public FloatWindowQuickCenter(Context context, int position) {super(context);mView = LayoutInflater.from(context).inflate(R.layout.view_floatwindow_quickcenter, this);this.mPosition = position;this.mContext = context;//其他功能代码}//其他功能代码
}

• FloatWindowManager关键代码

/*** @Function 悬浮窗管理类* @author rivers*/
public class FloatWindowManager {/*** 用于控制在屏幕上添加或移除悬浮窗*/private static WindowManager mWindowManager;/*** 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;}/*** 快捷中心实例*/private static FloatWindowQuickCenter mFloatWindowQuickCenter;/*** 快捷中心参数*/private static LayoutParams mQuickCenterParams;/*** 快捷中心create方法*/public static void createQuickCenterWindow(Context context, int position) {mWindowManager = getWindowManager(context); //检测windowmanager是否已经创建if (mFloatWindowQuickCenter == null) {mFloatWindowQuickCenter = new FloatWindowQuickCenter(context, position);mQuickCenterParams = new LayoutParams();mQuickCenterParams.type = LayoutParams.TYPE_SYSTEM_ALERT;mQuickCenterParams.format = PixelFormat.RGBA_8888;mQuickCenterParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL;mQuickCenterParams.width = android.view.ViewGroup.LayoutParams.MATCH_PARENT;mQuickCenterParams.height = android.view.ViewGroup.LayoutParams.MATCH_PARENT;mQuickCenterParams.x = 0;mQuickCenterParams.y = 0;if (position == QuickCenterParams.POSITION_RIGHT) {mQuickCenterParams.windowAnimations = android.R.style.Animation_Translucent;} else if (position == QuickCenterParams.POSITION_BOTTOM) {mQuickCenterParams.windowAnimations = android.R.style.Animation_InputMethod;}mWindowManager.addView(mFloatWindowQuickCenter, mQuickCenterParams);}}/*** 快捷中心remove方法*/public static void removeQuickCenterWindow(Context context) {if (mFloatWindowQuickCenter != null) {mFloatWindowQuickCenter.clearAnimation();mFloatWindowQuickCenter.unregisterReceiver();mWindowManager.removeView(mFloatWindowQuickCenter);mFloatWindowQuickCenter = null;}}//其他的功能代码//如show、touch都用类似的方法去执行创建和删除
}

需要注意的是LayoutParams这个参数，不是LinearLayout或者RelativeLayout下的LayoutParams，包全称为android.view.WindowManager.LayoutParams，是WindowManager下的专属参数，在create方法中也看到一些参数的定义了，是很重要的，直接影响到利用WindowManager创建的这个悬浮窗的级别和呈现方法、可操作性等。下面简单的介绍一下我用到的参数，更多的可以Google。

/*** Start of system-specific window types.  These are not normally* created by applications.*/
public static final int FIRST_SYSTEM_WINDOW     = 2000;/*** Window type: the status bar.  There can be only one status bar* window; it is placed at the top of the screen, and all other* windows are shifted down so they are below it.* In multiuser systems shows on all users' windows.*/
public static final int TYPE_STATUS_BAR         = FIRST_SYSTEM_WINDOW;/*** Window type: the search bar.  There can be only one search bar* window; it is placed at the top of the screen.* In multiuser systems shows on all users' windows.*/
public static final int TYPE_SEARCH_BAR         = FIRST_SYSTEM_WINDOW+1;/*** Window type: phone.  These are non-application windows providing* user interaction with the phone (in particular incoming calls).* These windows are normally placed above all applications, but behind* the status bar.* In multiuser systems shows on all users' windows.*/
public static final int TYPE_PHONE              = FIRST_SYSTEM_WINDOW+2;/*** Window type: system window, such as low power alert. These windows* are always on top of application windows.* In multiuser systems shows only on the owning user's window.*/
public static final int TYPE_SYSTEM_ALERT       = FIRST_SYSTEM_WINDOW+3;

接下来介绍LayoutParams.flag

/*** Window type: system window, such as low power alert. These windows* are always on top of application windows.* In multiuser systems shows only on the owning user's window.*/
public static final int TYPE_SYSTEM_ALERT       = FIRST_SYSTEM_WINDOW+3;/** Window flag: this window won't ever get key input focus, so the* user can not send key or other button events to it.  Those will* instead go to whatever focusable window is behind it.  This flag* will also enable {@link #FLAG_NOT_TOUCH_MODAL} whether or not that* is explicitly set.* * <p>Setting this flag also implies that the window will not need to* interact with* a soft input method, so it will be Z-ordered and positioned * independently of any active input method (typically this means it* gets Z-ordered on top of the input method, so it can use the full* screen for its content and cover the input method if needed.  You* can use {@link #FLAG_ALT_FOCUSABLE_IM} to modify this behavior. */
public static final int FLAG_NOT_FOCUSABLE      = 0x00000008;/** Window flag: this window can never receive touch events. */
public static final int FLAG_NOT_TOUCHABLE      = 0x00000010;/** Window flag: even when this window is focusable (its* {@link #FLAG_NOT_FOCUSABLE} is not set), allow any pointer events* outside of the window to be sent to the windows behind it.  Otherwise* it will consume all pointer events itself, regardless of whether they* are inside of the window. */
public static final int FLAG_NOT_TOUCH_MODAL    = 0x00000020;

再接下来是LayoutParams.windowAnimations，主要是窗口弹出的动画效果，我在项目中根据我的需求，右边我就用android.R.style.Animation_Translucent风格，位移推出快捷中心窗口，如果设置的从下拉出，则用android.R.style.Animation_InputMethod风格，类似于键盘的弹出，还有其他的风格，比如toast，dialog等，TX们可以自行google或者参看。