Android 将文件压缩成ZIP

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于 2020-08-31 17:45:56 首次发布

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本文介绍了一种在Android中将文件或文件夹压缩为ZIP格式的方法。通过使用ZipOutputStream核心API，提供了两个实用方法：ZipFolder用于压缩指定的源文件到ZIP，ZipFiles则负责递归地处理文件和目录的压缩。此教程适用于需要在移动应用中实现文件压缩功能的开发者。

Android 将文件压缩成ZIP

核心API: ZipOutputStream

 public static void ZipFolder(String srcFileString, String zipFileString) {
        //创建ZIP
        try {
            ZipOutputStream outZip = new ZipOutputStream(new FileOutputStream(new File(zipFileString + "" + System.currentTimeMillis() + ".zip")));
            //创建文件
            File file = new File(srcFileString);
            //压缩
            ZipFiles(file.getParent() + File.separator, file.getName(), outZip);
            //完成和关闭
            outZip.finish();
            outZip.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void ZipFiles(String folderString, String fileString, ZipOutputStream zipOutputSteam) {
        try {
            if (zipOutputSteam == null)
                return;
            File file = new File(folderString + fileString);
            if (file.isFile()) {
                ZipEntry zipEntry = new ZipEntry(fileString);
                FileInputStream inputStream = new FileInputStream(file);
                zipOutputSteam.putNextEntry(zipEntry);
                int len;
                byte[] buffer = new byte[4096];
                while ((len = inputStream.read(buffer)) != -1) {
                    zipOutputSteam.write(buffer, 0, len);
                }
                zipOutputSteam.closeEntry();
            } else {
                //文件夹
                String fileList[] = file.list();
                //没有子文件和压缩
                if (fileList.length <= 0) {
                    ZipEntry zipEntry = new ZipEntry(fileString + File.separator);
                    zipOutputSteam.putNextEntry(zipEntry);
                    zipOutputSteam.closeEntry();
                }
                //子文件和递归
                for (int i = 0; i < fileList.length; i++) {
                    ZipFiles(folderString + fileString + "/", fileList[i], zipOutputSteam);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }