Android 解压方法详情

Android 解压方法详情

/**
 * 解压缩
 * 将zipFile文件解压到folderPath目录下.
 * @param assetName zip文件
 * @param folderPath 解压到的地址
 * @throws IOException
 */
private void upZipFile(String assetName, String folderPath) throws IOException {
    File out=new File(folderPath);
    if(!out.exists()){
        out.mkdirs();
    }

    File zipFile=new File(assetName);
    ZipFile zfile = new ZipFile(zipFile);
    Enumeration zList = zfile.entries();
    ZipEntry ze = null;
    byte[] buf = new byte[1024];
    while (zList.hasMoreElements()) {
        ze = (ZipEntry) zList.nextElement();
        if (ze.isDirectory()) {
            String dirstr = folderPath + ze.getName();
            dirstr = new String(dirstr.getBytes("8859_1"), "GB2312");
            File f = new File(dirstr);
            f.mkdirs();
            continue;
        }
        OutputStream os = new BufferedOutputStream(new FileOutputStream(getRealFileName(folderPath, ze.getName())));
        InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
        int readLen = 0;
        while ((readLen = is.read(buf, 0, 1024)) != -1) {
            os.write(buf, 0, readLen);
        }
        is.close();
        os.close();
    }
    zfile.close();
}