android初学------设置ViewGrop下面的控件失效

public static void setViewGroupEnebled(ViewGroup view, boolean enabled)
    {
        int childern = view.getChildCount();

        for (int i = 0; i< childern ; i++)
        {
            View child = view.getChildAt(i);
            if (child instanceof ViewGroup)
            {
                setViewGroupEnebled((ViewGroup) child,enabled);
            }
            child.setEnabled(enabled);
        }
        view.setEnabled(enabled);
    }