Develop Reference

Dom parsing for Android

I want to parse XML which is received from a .net web service and store the parsed data into a string array. I tried so many times but the loop is terminating after one execution without any exception.
The XML which is received from web service is attached here.
<DocumentElement>
<PictureList>
<Id>1</Id>
<WorkId>1</WorkId>
<PictureUrl>"~/Admin/"</PictureUrl>
<Status>Active</Status>
<CreatedDateTime>2015-11-21T00:00:00+00:00</CreatedDateTime>
</PictureList>
</DocumentElement>
code which is used for parsing is given below
public void pictures(String st) {
DocumentBuilderFactory factory =DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
builder = factory.newDocumentBuilder();
Document doc = builder.parse(new InputSource(new StringReader(st)));
Element env = doc.getDocumentElement();
NodeList nl = env.getElementsByTagName("PictureList");
lengthsem = nl.getLength();
length = 0;
Node n = nl.item(0);
NodeList nl_suc = n.getChildNodes();
length = nl_suc.getLength();
String[][] semres;
String semdata[][] = new String[lengthsem][36];
for (int i = 0; i < lengthsem; i++) {
n = nl.item(i);
nl_suc = n.getChildNodes();
length = nl_suc.getLength();
int count = 0;
for (int j = 0; j < length; j++) {
System.out.println("length inndr" +length);
Node n_suc = nl_suc.item(j);
String lab = n_suc.getNodeName();
Log.e("lab",lab);
Log.e("fhkhgfgfkhg", n_suc.getNodeName());
if (n_suc.getNodeType() == Node.ELEMENT_NODE) {
sem = Webxml.getElementText((Element) n_suc);
Log.e("iloufhkhghjk,ldlfdlll", sem);
Log.e("fhkhghjk,ldlfdlll", lab);
Node hasSub = nl_suc.item(10);
Log.e("fhkhghjksunbb", hasSub.getNodeName());
String sub = Webxml.getElementText((Element) hasSub);
if (lab.equals("Id")) {
semdata[i][0] = sem;
System.out.println("0 " + lab + i);
success = "true";
try {
j++;
System.out.println(j + "jvalueee");
}catch (Exception e){
System.out.println("exception");
}
Log.e("fhkhghjk,ldlfdlll", lab);
} else if (lab.equals("WorkId")) {
semdata[i][1] = sem;
System.out.println("0 " + lab + i);
success = "true";
Log.e("fhkhghjk,ldlfdlll", lab);
} else if (lab.equals("PictureUrl")) {
semdata[i][2] = sem;
System.out.println("0 " + lab + i);
success = "true";
Log.e("fhkhghjk,ldlfdlll", lab);
} else if (lab.equals("CreatedDateTime")) {
semdata[i][3] = sem;
System.out.println("0 " + lab + i);
success = "true";
Log.e("fhkhghjk,ldlfdlll", lab);
} else {
System.out.println("test111");
break;
}
}
}
}

Well i worked some kind of same data so i can suggest you this way. you can use it also.
String[][] strarray = new String[0][10];
try {
mDbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = mDbf.newDocumentBuilder();
is.setCharacterStream(new StringReader(xml));
mDocument = db.parse(is);
mDocument.getDocumentElement().normalize();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
NodeList nodeList = mDocument.getElementsByTagName("PictureList");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element) node;
strarray[0][i] = getValue("Id", element);
strarray[0][i] = getValue("WorkId", element));
strarray[0][i] = getValue("PictureUrl", element));
strarray[0][i] = getValue("Status", element));
strarray[0][i] = getValue("CreatedDateTime", element));
}
}
public String getValue(String stag, Element mElement) {
String value = "";
NodeList nlList = mElement.getElementsByTagName(stag).item(0)
.getChildNodes();
Node nValue = (Node) nlList.item(0);
if (nValue != null) {
value = nValue.getTextContent();
}
return value;
}
I changed it for string array. so it can be logically wrong somewhere.

android XML Parsing with multiple child nodes

I am trying to parse an xml but it is returning all the chld nodes that have tag "nature".But I just want to only those nodes whose cat is selcted.
My xml looks like :-
<NatureList>
<NatureCategory cat="Crimes Against People">
<Nature>
<Name>Aggravated Assault</Name>
</Nature>
<Nature>
<Name>Annoyance Phone Calls</Name>
</Nature>
<NatureCategory>
<NatureCategory ...NatureCategory>
and parsing is done like this :
Document doc = XmlParser.getDomElement(xml);
NodeList n = doc.getElementsByTagName("NatureCategory");
try {
for(int i=0; i<n.getLength();i++)
{
Element e = (Element) n.item(i);
if(e.getAttribute("cat").equals(spinn.getSelectedItem().toString()))
{
Log.i("sub1", spinn.getSelectedItem().toString() );
NodeList n1 = doc.getElementsByTagName("Nature");
for(int j=0; j<n1.getLength();j++)
{
Element e1 = (Element) n1.item(j);
subcategory.add(getValue(e1, "Name"));
}
}
// subcategory.add()
}
}

nodes1 = doc.getElementsByTagName("NatureList");
for (int i = 0; i < nodes1.getLength(); i++) {
ObjectClass cgro = new ObjectClass();
Element e = (Element)nodes1.item(i);
cgro.NatureCategory = XMLfunctions.getValue(e, "NatureCategory");//here u can compare with your spinner string if match then parse this NatureCategory or save oe any logic which u like
nodes1a = doc.getElementsByTagName("cat");
for(int j = 0; j < nodes1a.getLength(); j++ ){
ObjectClass1 cgro1 = new ObjectClass1();
Element e2= (Element) nodes1a.item(j);
cgro1.cat= XMLfunctions.getCharacterDataFromElement(e2);
ArrayListClass.ItemList1.add(cgro1);
}
ArrayListClass.ItemList2.add(cgro);
}
and class use for this
public class XMLfunctions {
public final static Document XMLfromString(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
System.out.println("XML parse error: " + e.getMessage());
return null;
} catch (SAXException e) {
System.out.println("Wrong XML file structure: " + e.getMessage());
return null;
} catch (IOException e) {
System.out.println("I/O exeption: " + e.getMessage());
return null;
}
return doc;
}
/** Returns element value
* #param elem element (it is XML tag)
* #return Element value otherwise empty String
*/

I think if form your XML like this it would be better:
<NatureList>
<NatureCategory>
<cat>Crimes Against People</cat>
<Nature>
<Name>Aggravated Assault</Name>
</Nature>
<Nature>
<Name>Annoyance Phone Calls</Name>
</Nature>
<NatureCategory>
Then get the cat tag and then test it.

XML Pullparser: Getting The Value of a Particular node

Lets say I have a XML file:
<catalog>
<book>
<isbn>1</isbn>
<author> A</author>
<title>Title A</title>
<description> Desc A</description>
</book>
<book>
<isbn>2</isbn>
<author>B</author>
<title>Title B</title>
<description>Desc B</description>
</book>
...
<catalog>
As per Android's documentation I can fetch all the data in my Activity like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
stringXmlContent = getEventsFromAnXML(this);
...
}
private String getEventsFromAnXML(Activity activity)
throws XmlPullParserException, IOException {
StringBuffer stringBuffer = new StringBuffer();
Resources res = activity.getResources();
XmlResourceParser xpp = res.getXml(R.xml.myxmlfile );
xpp.next();
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_TAG) {
stringBuffer.append("\nSTART_TAG: " + xpp.getName());
} else if (eventType == XmlPullParser.END_TAG) {
stringBuffer.append("\nEND_TAG: " + xpp.getName());
} else if (eventType == XmlPullParser.TEXT) {
stringBuffer.append("\nTEXT: " + xpp.getText());
}
eventType = xpp.next();
}
return stringBuffer.toString();
}
While this fetches all content from XML file, I am really struggling to filter it out for a certain condition.
For example let us say I want to get the author name for book with isbn of 2. How do I filter this data out using pullparser ?

check this out and modify according to your needs
URL url2 = new URL("http://ws.audioscrobbler.com/2.0/?method=artist.getinfo&artist=" +artist+ "&api_key=1732077d6772048ccc671c754061cb18");
URLConnection connection = url2.openConnection();
connection.setConnectTimeout(10000);
connection.setReadTimeout(30000);
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
final Document document = db.parse(connection.getInputStream());
document.getDocumentElement().normalize();
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xPathEvaluator = xPathfactory.newXPath();
XPathExpression nameExpr = xPathEvaluator.compile("//lfm/artist/image");
// XPathExpression nameExpr = xPathEvaluator.compile("//lfm/tracks/track/image");
NodeList nl = (NodeList) nameExpr.evaluate(document, XPathConstants.NODESET);
for (int zzz = 0; zzz < nl.getLength(); zzz++)
{
Node currentItem = nl.item(zzz);
key = currentItem.getTextContent();
// key = currentItem.getAttributes().getNamedItem("uri").getNodeValue();
}
in the variable key,i get the value of the node which contains image

It requires a bit of guess and check (at least that's what I needed when I did it), but you can easily test a certain node's text to see if the ISBN is 2 (and, if it is, you can continue to parse the data. Otherwise, you can keep going until you get to the next ISBN node.

xml parsing using DOM parser

I need to parse document using DOM parser in android. I was unable to print all the node values
My Sample XML is:`
<xml_api_reply version="1">
<news module_id="0" tab_id="0" mobile_row="0" mobile_zipped="1" row="0" section="0">
<title data="Top Stories"/>
<section_type data="0"/>
<news_entry>
<title data="BSE Sensex breaches 19000, Nifty above 5800"/>
<url data="http://in.reuters.com/article/2012/10/04/sensex-above-19000-on-reform-hopes- idINDEE89301O20121004"/>
<snippet data="| MUMBAI (Reuters) - The Nifty rose above 5800 points on Thursday, joining the Sensex in breaching key psychological levels, after continued government reform measures sparked hopes for continued action. Banks led gainers, with ICICI Bank (ICBK."/>
<source data="Reuters India"/>
<date data="3 hours ago"/>
<num_related data="145"/>
<cluster_url data="http://google.co.in/news/story?ncl=da6VmeBXmuquikM&hl=en"/>
</news_entry>
<news_entry>
<title data="Uncertainty over Kingfisher resuming operations tomorrow"/>
<url data="http://www.hindustantimes.com/India-news/NewDelhi/Uncertainty-over- Kingfisher-resuming-operations-tomorrow/Article1-939628.aspx"/>
<snippet data="Hopes of ailing Kingfisher Airlines resuming operations on Friday has faded with last ditch efforts by the management to persuade striking engineers and pilots to return to work failing to end the deadlock over the issue of non-payment of salaries for ..."/>
<source data="Hindustan Times"/>
<date data="1 hour ago"/>
<num_related data="993"/>
<cluster_url data="http://google.co.in/news/story?ncl=dzf460GzYKTOyxM&hl=en"/>
</news_entry>
</news>
</xml_api_reply>`
and I am using following code to parse the xml
xmlactivity.java
public class AndroidXMLParsingActivity extends ListActivity {
// All static variables
static final String URL = "http://www.google.co.in/ig/api?news&hl=en";
// XML node keys
static final String KEY_ITEM = "news"; // parent node
//static final String KEY_ID = "news_entry";
static final String KEY_NAME = "title ";
static final String KEY_COST = "url ";
static final String KEY_DESC = "snippet";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
//map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_NAME, parser.getValue(e, KEY_NAME));
//map.put(KEY_COST, parser.getValue(e, KEY_COST));
//map.put(KEY_DESC, parser.getValue(e, KEY_DESC));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
/* ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item,
new String[] { KEY_NAME, KEY_DESC, KEY_COST }, new int[] {
R.id.name, R.id.desciption, R.id.cost });*/
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item,
new String[] { KEY_NAME }, new int[] {
R.id.name});
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
//String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
//String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
//in.putExtra(KEY_NAME, name);
//in.putExtra(KEY_COST, cost);
in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
and xmlParser.java
public class XMLParser {
// constructor
public XMLParser() {
}
/**
* Getting XML from URL making HTTP request
* #param url string
* */
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// return XML
return xml;
}
/**
* Getting XML DOM element
* #param XML string
* */
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
/** Getting node value
* #param elem element
*/
public final String getElementValue( Node elem ) {
Node child;
if( elem != null){
if (elem.hasChildNodes()){
for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
if( child.getNodeType() == Node.TEXT_NODE ){
return child.getNodeValue();
}
}
}
}
return "";
}
/**
* Getting node value
* #param Element node
* #param key string
* */
public String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
}
please help me . what is the problem and suggestion
thanks in advance!!!!!!!!!

//Try this code..
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
URLConnection conn = null;
InputStream inputStream = null;
URL urls = new URL(url);
conn = urls.openConnection();
conn.setConnectTimeout(10000);
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setRequestMethod("GET");
httpConn.setConnectTimeout(10000);
httpConn.connect();
if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
inputStream = httpConn.getInputStream();
}
BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
StringWriter writer=new StringWriter();
String line="";
while ( null!=(line=in.readLine())){
writer.write(line);
}
xml =writer.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return xml;
}
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse(new InputSource(new StringReader(xml)));
doc.normalize();
//InputSource is = new InputSource();
// is.setCharacterStream(new StringReader(xml));
// doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
public final String getElementValue(Node elem) {
Node child;
if (elem != null) {
if (elem.hasChildNodes()) {
for (child = elem.getFirstChild(); child != null; child = child
.getNextSibling()) {
if (child.getNodeType() == Node.TEXT_NODE || child.getNodeType() == Node.CDATA_SECTION_NODE) {
return child.getTextContent();
}
}
}
}
return "";
}

// All static variables
static final String URL = "http://www.google.co.in/ig/api?news&hl=en";
// XML node keys
static final String KEY_ITEM = "news"; // parent node
static final String KEY_ID = "news_entry";
static final String KEY_NAME = "title";
static final String KEY_COST = "url";
static final String KEY_DESC = "snippet";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
for (int i = 0; i < nl.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
NamedNodeMap attributes = e.getAttributes();
System.out.println("attrlength"+attributes.getLength());
for (int a = 0; a < attributes.getLength(); a++)
{
Node theAttribute = attributes.item(a);
System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}
NodeList nl1=e.getElementsByTagName(KEY_ID);
System.out.println("keyId"+nl1.getLength());
for(int j=0;j<nl1.getLength();j++)
{
Element e1 = (Element) nl1.item(j);
NodeList n = e1.getElementsByTagName(KEY_NAME);
for (int k = 0; k < n.getLength(); k++) {
Element e2 = (Element) n.item(k);
// System.out.println("node Title value"+e2.getNodeName());
NamedNodeMap attributes2 = e2.getAttributes();
// System.out.println("attrlength"+attributes2.getLength());
for (int a = 0; a < attributes2.getLength(); a++)
{
Node theAttribute = attributes2.item(a);
System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}
}
NodeList n1 = e1.getElementsByTagName(KEY_COST);
// System.out.println("title "+n.getLength());
for (int k = 0; k < n1.getLength(); k++) {
Element e2 = (Element) n1.item(k);
// System.out.println("node Url value");
NamedNodeMap attributes2 = e2.getAttributes();
// System.out.println("attrlength"+attributes2.getLength());
for (int a = 0; a < attributes2.getLength(); a++)
{
Node theAttribute = attributes2.item(a);
System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}}
NodeList n2 = e1.getElementsByTagName(KEY_DESC);
// System.out.println("title "+n.getLength());
for (int k = 0; k < n2.getLength(); k++) {
Element e2 = (Element) n2.item(k);
// System.out.println("node snippet value"+e2.getNodeName());
NamedNodeMap attributes2 = e2.getAttributes();
// System.out.println("attrlength"+attributes2.getLength());
for (int a = 0; a < attributes2.getLength(); a++)
{
Node theAttribute = attributes2.item(a);
System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}
}
}
menuItems.add(map);
}
}

XML Parsing Error

I am consuming a web service as its output is an XML string. I am parsing it into a document and getting each child node value one by one and inserting into my SQLlite table as shown below:
public void DownloadAndInsertProblemAndReasonCode(String serverIPAddress,
String deviceId) {
String SOAP_ACTION = "http://VisionEPODWebService/GetProblemAndReasonCodesNew";
String OPERATION_NAME = "GetProblemAndReasonCodesNew";
String WSDL_TARGET_NAMESPACE = "http://VisionEPODWebService/";
String SOAP_ADDRESS = "";
SOAP_ADDRESS = "http://" + serverIPAddress
+ "/VisionEPODWebService/SystemData.asmx";
SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE,
OPERATION_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER10);
request.addProperty("deviceID", deviceId);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE httpTransport = new HttpTransportSE(SOAP_ADDRESS);
try {
httpTransport.call(SOAP_ACTION, envelope);
Object response = envelope.getResponse();
DocumentBuilderFactory docBuilberFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder docBuilder = docBuilberFactory.newDocumentBuilder();
InputSource inputSource = new InputSource();
inputSource
.setCharacterStream(new StringReader(response.toString()));
Document doc = docBuilder.parse(inputSource);
NodeList nodesProblemCode = doc
.getElementsByTagName("tblProblemCode");
ContentValues initialProblemCodeValues = new ContentValues();
dbAdapter = new DatabaseAdapter(this.context);
dbAdapter.open();
dbAdapter.BeginTransaction();
dbAdapter.DeleteRecord("tblProblemCode", "", "");
for (int i = 0; i < nodesProblemCode.getLength(); i++) {
Element element = (Element) nodesProblemCode.item(i);
NodeList PKProblemCode = element
.getElementsByTagName("PKProblemCode");
Element line = (Element) PKProblemCode.item(0);
initialProblemCodeValues.put("PKProblemCode",
getCharacterDataFromElement(line).toString());
NodeList ProblemCode = element
.getElementsByTagName("ProblemCode");
line = (Element) ProblemCode.item(0);
initialProblemCodeValues.put("ProblemCode",
getCharacterDataFromElement(line));
NodeList ProblemCodeDescription = element
.getElementsByTagName("ProblemCodeDescription");
line = (Element) ProblemCodeDescription.item(0);
initialProblemCodeValues.put("ProblemCodeDescription",
getCharacterDataFromElement(line).toString());
NodeList VWReturn = element.getElementsByTagName("VWReturn");
line = (Element) VWReturn.item(0);
initialProblemCodeValues.put("VWReturn",
getCharacterDataFromElement(line).toString());
dbAdapter.InsertRecord("tblProblemCode", "",
initialProblemCodeValues);
}
NodeList nodesReasonCode = doc
.getElementsByTagName("tblReasonCode");
ContentValues initialReasonCodeValues = new ContentValues();
dbAdapter.DeleteRecord("tblReasonCode", "", "");
for (int i = 0; i < nodesReasonCode.getLength(); i++) {
Element element = (Element) nodesReasonCode.item(i);
NodeList PKReasonCode = element
.getElementsByTagName("PKReasonCode");
Element line = (Element) PKReasonCode.item(0);
initialReasonCodeValues.put("PKReasonCode",
getCharacterDataFromElement(line).toString());
NodeList ReasonDescription = element
.getElementsByTagName("ReasonDescription");
line = (Element) ReasonDescription.item(0);
initialReasonCodeValues.put("ReasonDescription",
getCharacterDataFromElement(line));
dbAdapter.InsertRecord("tblReasonCode", "",
initialReasonCodeValues);
}
dbAdapter.SetSucessfulTransaction();
dbAdapter.EndTransaction();
dbAdapter.close();
}
catch (Exception exception) {
exception.toString();
}
}
public static String getCharacterDataFromElement(Element e) {
Node child = e.getFirstChild();
if (child instanceof CharacterData) {
CharacterData cd = (CharacterData) child;
return cd.getData();
}
return "?";
}
The problem is that after some time the XML string will not have some of child node. For example
"ProblemCode" child node.....at that time the code shows error.
How can I check whether there exists an element in the document, or whether values exist or not for the element?

I think you need to check if the child node exists: specifically for your problem node:
NodeList NL = element.getElementsByTagName("PKProblemCode");
if ((NL==null)||(NL.getLength()==0)) {
//No such node so use a default instead
} else
Element line = (Element) PKProblemCode.item(0);