PopupWindow 无法覆盖状态栏和导航栏的问题解决

popupWindow.setClippingEnabled(false);
popupWindow.showAtLocation(getWindow().getDecorView(), Gravity.BOTTOM, 0, 0);
下边是源码

/**
     * 
Allows the popup window to extend beyond the bounds of the screen. By default the
     * window is clipped to the screen boundaries. Setting this to false will allow windows to be
     * accurately positioned.
     *
     * 
If the popup is showing, calling this method will take effect only
     * the next time the popup is shown or through a manual call to one of
     * the {@link #update()} methods.
     *
     * @param enabled false if the window should be allowed to extend outside of the screen  如果允许窗口延伸到屏幕外，则为false
     * @see #isShowing()
     * @see #isClippingEnabled()
     * @see #update()
     */
    public void setClippingEnabled(boolean enabled) {
        mClippingEnabled = enabled;
    }