Android 壓縮解壓zip檔案

這個可以解壓 那些包含子目錄的zip檔案

/**     * 解壓縮功能.     * 將zipFile檔案解壓到folderPath目錄下.     * @throws Exception */     public int upZipFile(File zipFile, String folderPath)throws ZipException,IOException {     //public static void upZipFile() throws Exception{         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()){                 Log.d("upZipFile", "ze.getName() = "+ze.getName());                 String dirstr = folderPath + ze.getName();                 //dirstr.trim();                 dirstr = new String(dirstr.getBytes("8859_1"), "GB2312");                 Log.d("upZipFile", "str = "+dirstr);                 File f=new File(dirstr);                 f.mkdir();                 continue;             }             Log.d("upZipFile", "ze.getName() = "+ze.getName());             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();         Log.d("upZipFile", "finishssssssssssssssssssss");         return 0;     }      /**     * 給定根目錄，返回一個相對路徑所對應的實際檔案名稱.     * @param baseDir 指定根目錄     * @param absFileName 相對路徑名，來自於ZipEntry中的name     * @return java.io.File 實際的檔案 */     public static File getRealFileName(String baseDir, String absFileName){         String[] dirs=absFileName.split("/");         File ret=new File(baseDir);         String substr = null;         if(dirs.length>1){             for (int i = 0; i < dirs.length-1;i++) {                 substr = dirs[i];                 try {                     //substr.trim();                     substr = new String(substr.getBytes("8859_1"), "GB2312");                                      } catch (UnsupportedEncodingException e) {                     // TODO Auto-generated catch block                     e.printStackTrace();                 }                 ret=new File(ret, substr);                              }             Log.d("upZipFile", "1ret = "+ret);             if(!ret.exists())                 ret.mkdirs();             substr = dirs[dirs.length-1];             try {                 //substr.trim();                 substr = new String(substr.getBytes("8859_1"), "GB2312");                 Log.d("upZipFile", "substr = "+substr);             } catch (UnsupportedEncodingException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }                          ret=new File(ret, substr);             Log.d("upZipFile", "2ret = "+ret);             return ret;         }         return ret;     }

記得要在AndroidManifest.xml裡添加許可權：

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
 <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>