Custom Rom Zip erstellen

public void zipit(String zipFile, String srcDir) {

        try {

            FileOutputStream fos = new FileOutputStream(zipFile);

            ZipOutputStream zos = new ZipOutputStream(fos);

            File srcFile = new File(srcDir);

            addDirToArchive(zos, srcFile, "");

            zos.close();

        } catch (IOException ioe) {

        }
    }

    private void addDirToArchive(ZipOutputStream zos, File srcFile, String pfad) {
        progress.setVisibility(View.VISIBLE);
        File[] files = srcFile.listFiles();

        for (int i = 0; i < files.length; i++) {

            if (files[i].isDirectory()) {
                addDirToArchive(zos, files[i], pfad + files[i].getName() + "/");
                continue;
            }

            try {

                byte[] buffer = new byte[1024];

                FileInputStream fis = new FileInputStream(files[i]);

                zos.putNextEntry(new ZipEntry(pfad + files[i].getName()));

                int length;

                while ((length = fis.read(buffer)) > 0) {
                    zos.write(buffer, 0, length);
                }

                zos.closeEntry();

                fis.close();
                progress.setVisibility(View.VISIBLE);
                progress.setProgress(90);
                Toast.makeText(getBaseContext(), "File Zipped!",
                        Toast.LENGTH_LONG).show();
            } catch (IOException ioe) {

            }
        }

    }