Android Utililty Methods XML Document to String Convert

DOMImplementationLS domLS = (DOMImplementationLS) implementation;
LSSerializer serializer = domLS.createLSSerializer();
String s = serializer.writeToString(document);
return s;

TransformerFactory transfac = TransformerFactory.newInstance();
Transformer trans = transfac.newTransformer();
trans.setOutputProperty(OutputKeys.METHOD, "xml");
trans.setOutputProperty(OutputKeys.INDENT, "yes");
trans.setOutputProperty(
        "{http://xml.apache.org/xslt}indent-amount",
        Integer.toString(2));
StringWriter sw = new StringWriter();
...

Node results = doc.getDocumentElement();
int res = -1;
try {
    res = Integer.valueOf(results.getAttributes()
            .getNamedItem("count").getNodeValue());
} catch (Exception e) {
    res = -1;
return res;

StringBuilder buffer = new StringBuilder();
if (n == null)
    return "";
if (n instanceof Document) {
    buffer.append(documentToString((n).getFirstChild()));
} else if (n instanceof Element) {
    Element element = (Element) n;
    buffer.append("<");
...

NodeList errorNodes = xml.getElementsByTagName("error");
if (errorNodes.getLength() > 0) {
    Element errorElement = (Element) errorNodes.item(0);
    return getElementText(errorElement);
return null;

return docToString(document.getChildNodes()).trim();

final StringWriter sw = new StringWriter();
TransformerFactory transformerFactory = TransformerFactory
        .newInstance();
try {
    Transformer transformer = transformerFactory.newTransformer();
    transformer.transform(new DOMSource(doc), new StreamResult(sw));
    return sw.toString();
} catch (Exception e) {
...