2016-11-28 183 views
1

我的应用程序必须下载一个zip文件,并且必须将其解压缩到应用程序文件夹中。问题是,zip没有文件,但文件夹中,并在每个文件夹中有不同的文件。我会保持相同的结构,但我不知道它是如何做到的。我成功了,如果我用一个文件的zip文件,但没有一个文件夹的zip文件。有人知道它是怎么做到的? 非常感谢。从android中提取压缩文件夹

+0

https://github.com/commonsguy/cwac-security/#usage-ziputils – CommonsWare

回答

3

您将需要为ZIP存档中的每个目录条目创建目录。这是我写的一个方法和用途,将让目录结构:

/** 
* Unzip a ZIP file, keeping the directory structure. 
* 
* @param zipFile 
*  A valid ZIP file. 
* @param destinationDir 
*  The destination directory. It will be created if it doesn't exist. 
* @return {@code true} if the ZIP file was successfully decompressed. 
*/ 
public static boolean unzip(File zipFile, File destinationDir) { 
    ZipFile zip = null; 
    try { 
    destinationDir.mkdirs(); 
    zip = new ZipFile(zipFile); 
    Enumeration<? extends ZipEntry> zipFileEntries = zip.entries(); 
    while (zipFileEntries.hasMoreElements()) { 
     ZipEntry entry = zipFileEntries.nextElement(); 
     String entryName = entry.getName(); 
     File destFile = new File(destinationDir, entryName); 
     File destinationParent = destFile.getParentFile(); 
     if (destinationParent != null && !destinationParent.exists()) { 
     destinationParent.mkdirs(); 
     } 
     if (!entry.isDirectory()) { 
     BufferedInputStream is = new BufferedInputStream(zip.getInputStream(entry)); 
     int currentByte; 
     byte data[] = new byte[DEFUALT_BUFFER]; 
     FileOutputStream fos = new FileOutputStream(destFile); 
     BufferedOutputStream dest = new BufferedOutputStream(fos, DEFUALT_BUFFER); 
     while ((currentByte = is.read(data, 0, DEFUALT_BUFFER)) != EOF) { 
      dest.write(data, 0, currentByte); 
     } 
     dest.flush(); 
     dest.close(); 
     is.close(); 
     } 
    } 
    } catch (Exception e) { 
    return false; 
    } finally { 
    if (zip != null) { 
     try { 
     zip.close(); 
     } catch (IOException ignored) { 
     } 
    } 
    } 
    return true; 
} 
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好工作。拯救我。 – Abhishek