/**

     * 判断当前手机是否有ROOT权限

     * @return

     */

    public boolean isRoot(){

        boolean bool = false;

        try{

            if ((!new File("/system/bin/su").exists()) && (!new File("/system/xbin/su").exists())){

                bool = false;

            } else {

                bool = true;

            }

            Log.d(TAG, "bool = " + bool);

        } catch (Exception e) {

        }

        return bool;

    }