zip/compress a folder full of files on android

Question

I need to zip up a \"project\" folder to allow users to share projects via email. I found a class for zipping up multiple files into one zip, but I need to keep the folder s

Answer 1

public static boolean zip(File sourceFile, File zipFile) {
    List fileList = getSubFiles(sourceFile, true);
    ZipOutputStream zipOutputStream = null;
    try {
        zipOutputStream = new ZipOutputStream(new FileOutputStream(zipFile));
        int bufferSize = 1024;
        byte[] buf = new byte[bufferSize];
        ZipEntry zipEntry;
        for(int i = 0; i < fileList.size(); i++) {
            File file = fileList.get(i);
            zipEntry = new ZipEntry(sourceFile.toURI().relativize(file.toURI()).getPath());
            zipOutputStream.putNextEntry(zipEntry);
            if (!file.isDirectory()) {
                InputStream inputStream = new BufferedInputStream(new FileInputStream(file));
                int readLength;
                while ((readLength = inputStream.read(buf, 0, bufferSize)) != -1) {
                    zipOutputStream.write(buf, 0, readLength);
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    } finally {
        IoUtils.closeOS(zipOutputStream);
    }
    return true;
}    

public static List getSubFiles(File baseDir, boolean isContainFolder) {
    List fileList = new ArrayList<>();
    File[] tmpList = baseDir.listFiles();
    for (File file : tmpList) {
        if (file.isFile()) {
            fileList.add(file);
        }
        if (file.isDirectory()) {
            if (isContainFolder) {
                fileList.add(file); //key code
            }
            fileList.addAll(getSubFiles(file));
        }
    }
    return fileList;
}