android-zip解压缩方法

 /**
      * 解压缩文件到指定的目录.
      *
      * @param unZipfileName
      *            需要解压缩的文件（带路径）
      * @param mDestPath
      *            解压缩后存放的路径
      **/
     public static void unZip(String unZipfileName, String mDestPath) {
         if (!mDestPath.endsWith("/")) {
             mDestPath = mDestPath + "/";
         }
         FileOutputStream fileOut = null;
         ZipInputStream zipIn = null;
         ZipEntry zipEntry = null;
         File file = null;
         int readedBytes = 0;
         byte buf[] = new byte[4096];
         try {
             zipIn = new ZipInputStream(new BufferedInputStream(
                     new FileInputStream(unZipfileName)));
             while ((zipEntry = zipIn.getNextEntry()) != null) {
                 file = new File(mDestPath + zipEntry.getName());
                 if (zipEntry.isDirectory()) {
                     file.mkdirs();
                 } else {
                     // 如果指定文件的目录不存在,则创建之.
                     File parent = file.getParentFile();
                     if (!parent.exists()) {
                         parent.mkdirs();
                     }
                     fileOut = new FileOutputStream(file);
                     while ((readedBytes = zipIn.read(buf)) > 0) {
                         fileOut.write(buf, 0, readedBytes);
                     }
                     fileOut.close();
                 }
                 zipIn.closeEntry();
             }
         } catch (IOException ioe) {
             ioe.printStackTrace();

         }
     }