android : parsing nested xml with same node name in different levels

Question

in the xml file , there are nodes with same name in different levels. How can i distinguish based on the leve or parent

<account email="[email protected]" >

<contacts>

    <contact>
        <id>
        0
        </id>
    </contact>
    <contact>
        <id>
         1
        </id>
    </contact>
    <contact>
        <id>
         2
        </id>
    </contact>
</contacts>

<groups>

    <group>

        <groupname>
         xyz

        </groupname>

        <members>

            <contact>

                <id>
                 7

                </id>
            </contact>

            <contact>

                <id>
                 8
                </id>
            </contact>
        </members>
    </group>
</groups>

here i have contact under contacts as well as under groups ->group->memebers I need to distinguish between them if i try

doc.getElementsByTagName("contact");

it will return all the contact nodes in all levels. This is not what is required. I need to contact unders contacts separate and under memebers separate.

Please help.

alrama · Accepted Answer · 2014-01-07 14:06:19Z

1

using DOM XML technology you can extract NodeSet by mean of XPATHExpression:

   String path = "//account/groups/group/members/contact";
   XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr1;
    try {
        expr1 = xpath.compile(path);
        return (NodeList)expr1.evaluate(doc, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return null;
    }

this will return only contact inside groups

answered Jan 7, 2014 at 14:06

alrama

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