编码转换

/**

     * 将空格转换为%20

     * 

     * @param s

     * @return

     */

    public String delEnt(String s) {

        Pattern pattern = Pattern.compile("s*\\+");

        Matcher matcher = pattern.matcher(s);

        return matcher.replaceAll("%20");

    }

/**

     * 去掉换行符

     * 

     * @param s

     * @return

     */

    public String delEn(String s) {

        Pattern pattern = Pattern.compile("\\s*\n");

        Matcher matcher = pattern.matcher(s);

        return matcher.replaceAll("");

    }

/**

     * 删除rar，srt类型文件

     * 

     * @param s

     * @return

     */

    public String[] removeRAR(String[] s) {

        List<String> lista = new ArrayList<String>();



        for (int i = 0; i < s.length; i++)

            lista.add(s[i]);

        for (int j = 0; j < s.length; j++) {

            if (s[j].indexOf(".rar") != -1 || s[j].indexOf(".srt") != -1) {

                lista.remove(s[j]);



            }

/**

     * 汉字转码

     * 

     * @param str

     * @return

     */

    public String strToUTF(String str) {

        try {

            str = URLEncoder.encode(str, "UTF-8");

        } catch (UnsupportedEncodingException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        Log.d(str, "");

        return str;

    }

 

        }

        final int size = lista.size();

        s = (String[]) lista.toArray(new String[size]);

        return s;

    }