Android Utililty Methods XML Node Child Check

List of utility methods to do XML Node Child Check

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Description

The list of methods to do XML Node Child Check are organized into topic(s).

Method

booleanhasChild(Node node, String namespace, String name)
Search for availability of a certain child. 
return getFirstChild(node, namespace, name) != null;
booleanhasChildElement(NodeList list)
Checks if the given NodeList contains a child element. 
Node n;
for (int i = 0; i < list.getLength(); i++) {
    n = list.item(i);
    if (n.getNodeType() == Node.ELEMENT_NODE) {
        return true;
return false;
...
booleanhasTextContent(Node child)
has Text Content 
return child.getNodeType() != Node.COMMENT_NODE
        && child.getNodeType() != Node.PROCESSING_INSTRUCTION_NODE;
booleanisDescendantOrSelf(Node ctx, Node descendantOrSelf)
Returns true if the descendantOrSelf is on the descendant-or-self axis of the context node. 
if (ctx == descendantOrSelf) {
    return true;
Node parent = descendantOrSelf;
while (true) {
    if (parent == null) {
        return false;
    if (parent == ctx) {
        return true;
    if (parent.getNodeType() == Node.ATTRIBUTE_NODE) {
        parent = ((Attr) parent).getOwnerElement();
    } else {
        parent = parent.getParentNode();
booleanisInstance(Node node, String namespace, String name)
Test if a node matches a namespace/name criteria, handling a null as match any. 
if (node.getNodeType() != Node.ELEMENT_NODE) {
    return false;
if (namespace != null && !namespace.equals(node.getNamespaceURI())) {
    return false;
if (name != null && !name.equals(node.getLocalName())
        && !name.equals(node.getNodeName())) {
...