Android文件压缩和解压(2)

     * @param resFileList
     *            要压缩的文件（夹）列表
     * @param zipFile
     *            生成的压缩文件
     * @param comment
     *            压缩文件的注释
     * @throws IOException
     *             当压缩过程出错时抛出
     */ 
    public static void zipFiles(Collection<File> resFileList, File zipFile, String comment) throws IOException { 
        ZipOutputStream zipout = null; 
        try { 
            zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE)); 
            for (File resFile : resFileList) { 
                zipFile(resFile, zipout, ""); 
            } 
            zipout.setComment(comment); 
 
        } finally { 
            if (zipout != null) 
                zipout.close(); 
        } 
    } 
 
    /**
     * 解压缩一个文件
     * 
     * @param zipFile
     *            压缩文件
     * @param folderPath
     *            解压缩的目标目录
     * @throws IOException
     *             当解压缩过程出错时抛出
     */ 
    public static void upZipFile(File zipFile, String folderPath) throws ZipException, IOException { 
        File desDir = new File(folderPath); 
        if (!desDir.exists()) { 
            desDir.mkdirs();