/**
  * 創(chuàng)建一個小懸浮窗。初始位置為屏幕的右部中間位置。
  * 
  * @param context 必須為應用程序的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);
   LogPrinter.i(TAG, "添加了小浮標View");
  }
 }
smallWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL | LayoutParams.FLAG_NOT_FOCUSABLE;