/***
         * 获取超级用户权限
         * */
        public static boolean runRootCommand(String command) {
            Process process = null;
            DataOutputStream os = null;
                try {
                process = Runtime.getRuntime().exec("su");
                os = new DataOutputStream(process.getOutputStream());
                os.writeBytes(command+"\n");
                os.writeBytes("exit\n");
                os.flush();
                process.waitFor();
                } catch (Exception e) {
                        Log.d("*** DEBUG ***", "Unexpected error - Here is what I know: "+e.getMessage());
                        return false;
                }
                finally {
                        try {
                                if (os != null) {
                                        os.close();
                                }
                                process.destroy();
                        } catch (Exception e) {
                                // nothing
                        }
                }
                return true;
        }