<soap:Header>
    <DTHeader xmlns="http://myServer.com/webservices/">
      <Username> string </Username>
      <Password> string </Password>
    </DTHeader>
</soap:Header>
<soap:Body>
    <MyTestMethod xmlns="http://myServer.com/webservices/">
       <ID> string </ID>
       <TransID> guid </TransID>
     </MyTestMethod>
</soap:Body>

import org.kxml2.kdom.Element;

soapEnvelope.headerOut = new Element[1];
soapEnvelope.headerOut[0] = buildAuthHeader();
// ...send request...

private Element buildAuthHeader() {
    Element h = new Element().createElement(NAMESPACE, "AuthHeader");
    Element username = new Element().createElement(NAMESPACE, "user");
    username.addChild(Node.TEXT, USERNAME);
    h.addChild(Node.ELEMENT, username);
    Element pass = new Element().createElement(NAMESPACE, "pass");
    pass.addChild(Node.TEXT, PASSWORD);
    h.addChild(Node.ELEMENT, pass);

    return h;
}

ArrayList<HeaderProperty> headerProperty = new ArrayList<HeaderProperty>();

headerProperty.add(new HeaderProperty("guid", "value..."));

androidHttpTransport.call(soap_action,envelope,headerProperty);

public static Element buildAuthHeader() {
        Element headers[] = new Element[1];
        headers[0]= new Element().createElement("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd", "Security");
        headers[0].setAttribute(null, "mustUnderstand", "1");
        Element security=headers[0];

        //user token
        Element usernametoken = new Element().createElement(security.getNamespace(), "UsernameToken");
        usernametoken.setAttribute("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd", "Id", "UsernameToken-14CBAE357AC169AFA614664925178422");

        //username
        Element username = new Element().createElement(security.getNamespace(), "Username");
        username.addChild(Node.TEXT, HttpConstant.REQ_HEADER_USERNAME);
        usernametoken.addChild(Node.ELEMENT,username);

        // password
        Element password = new Element().createElement(security.getNamespace(), "Password");
        password.setAttribute(null, "Type", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText");
        password.addChild(Node.TEXT, HttpConstant.REQ_HEADER_PASSWORD);
        usernametoken.addChild(Node.ELEMENT,password);


        headers[0].addChild(Node.ELEMENT, usernametoken);

        return headers[0];
    }





SoapSerializationEnvelope sSerialaEnvelop = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        sSerialaEnvelop.dotNet = true;
        sSerialaEnvelop.headerOut = new Element[1];
        sSerialaEnvelop.headerOut[0] = buildAuthHeader(); //// add security request header
        sSerialaEnvelop.bodyOut = sObject;
        sSerialaEnvelop.setOutputSoapObject(sObject);