gistfile1.txt

 private void saveFileToDownloads(byte[] data) {
        File signfile = new File(Environment.getExternalStorageDirectory(), "signature.sig");

        if (signfile.exists()) {
            signfile.delete();
        }

        try {
            FileOutputStream fos = new FileOutputStream(signfile.getPath());
            fos.write(data);
            fos.close();
        } catch (java.io.IOException e) {
            e.getMessage();
        }
    }