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);
Related
how to decode xml dom parsing at media:thumbnail tag
here is my xml link : http://indianexpress.com/section/sports/feed/
try
{
XMLParser xmlParser = new XMLParser();
//result string is xml result
Document document = xmlParser.getDomElement(result);
NodeList nodeList = document.getElementsByTagName("item");
for (int i = 0; i < nodeList.getLength(); i++)
{
Element element = (Element) nodeList.item(i);
String title = xmlParser.getValue(element, "title");
String link = xmlParser.getValue(element, "link");
String pubdate = xmlParser.getValue(element, "pubDate");
NodeList media = element.getElementsByTagName("media:thumbnail");
Element elementMedia = (Element) media.item(0);
String url = elementMedia.getAttribute("url");
utils = new DataUtils();
utils.setProductName(title);
utils.setProductDate(pubdate);
utils.setProductDesc(link);
utils.setProductImage(url);
dataList.add(utils);
}
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);
}
}
Here is my code. I want to see these parsed strings into ListView in Android. How can I do this?
DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xmlRecords));
Document doc = db.parse(is);
NodeList nodes = doc.getElementsByTagName("employee");
for (int i = 0; i < nodes.getLength(); i++) {
Element element = (Element) nodes.item(i);
NodeList name = element.getElementsByTagName("name");
Element line = (Element) name.item(0);
System.out.println("Name: " + getCharacterDataFromElement(line));
NodeList title = element.getElementsByTagName("title");
line = (Element) title.item(0);
System.out.println("Title: " + getCharacterDataFromElement(line));
}
}
public static String getCharacterDataFromElement(Element e) {
Node child = e.getFirstChild();
if (child instanceof CharacterData) {
CharacterData cd = (CharacterData) child;
return cd.getData();
}
return "";
}
}
this is my xml structure :
<menu>
<item_category>
<category_name>ICECREAM</category_name>
<item>
<item_name>SOFTY</item_name>
<item_price>7.00</item_price>
</item>
<item>
<item_name>STICK</item_name>
<item_price>15.00</item_price>
</item>
<item>
<item_name>CONE</item_name>
<item_price>25.00</item_price>
</item>
</item_category>
<item_category>
<category_name>PIZZA</category_name>
<item>
<item_name>PIZZA-HOT</item_name>
<item_price>35.00</item_price>
</item>
<item>
<item_name>PIZZA-CRISPY</item_name>
<item_price>29.00</item_price>
</item>
</item_category>
</menu>
this is my code where i am parsing into list view
public class AndroidXMLParsingActivity extends ListActivity {
// All static variables
//static final String URL = "http://api.androidhive.info/pizza/?format=xml";
static final String URL = "http://192.168.1.112/dine/index.php/dineout/mob_view";
//static final String URL = "http://192.168.1.112/dineout/index.php/dineout/view";
// XML node keys
static final String KEY_MENU= "menu"; // parent node
//static final String KEY_ID = "foodjoint_id";
static final String KEY_CATEGORY= "category_name";
static final String KEY_ITEM= "item";
static final String KEY_ITEM_NAME= "item_name";
static final String KEY_PRICE= "item_price";
#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++)
{
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
map.put(KEY_CATEGORY, parser.getValue(e,KEY_CATEGORY));
map.put(KEY_ITEM_NAME, parser.getValue(e, KEY_ITEM_NAME));
map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE));
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item,
new String[] {KEY_CATEGORY,KEY_ITEM_NAME,KEY_PRICE}, new int[] {R.id.category,R.id.name,R.id.costlab });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String category = ((TextView) view.findViewById(R.id.category)).getText().toString();
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
//String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
//in.putExtra(KEY_ITEM, name);
in.putExtra(KEY_CATEGORY, category);
in.putExtra(KEY_ITEM_NAME,name);
in.putExtra(KEY_PRICE, cost);
//in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
}
}
My problem is i am not getting the value of category_name. I tried with nested loop but its all the same. please help me . what should i change in the code.
This is my xmlParser
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));
}
try this way
NodeList n,ncategories;
Element e;
static final String KEY_ITEMCATEGORY= "item_category";
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
ncategories = doc.getElementsByTagName(KEY_MENU);
for(int i=0;i<ncategories.getLength();i++){
e=(Element)ncategories.item(i);
n=e.getElementsByTagName(KEY_ITEMCATEGORY);
for(int c=0;c<n.getLength();c++){
HashMap<String, String> map = new HashMap<String, String>();
e=(Element)n.item(c);
String category= parser.getValue(e, KEY_CATEGORY).toString();
Log.e("catname", parser.getValue(e, KEY_CATEGORY).toString());
map.put(KEY_CATEGORY, category);
NodeList ns=e.getElementsByTagName(KEY_ITEM);
for(int j=0;j<ns.getLength();j++){
e=(Element)ns.item(j);
Log.e("itemname", parser.getValue(e,KEY_ITEM_NAME).toString());
Log.e("itemprice", parser.getValue(e, KEY_PRICE).toString()+"\n");
map.put(KEY_ITEM_NAME, parser.getValue(e, KEY_ITEM_NAME));
map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE));
}
menuItems.add(map);
}
Try something like this:
NodeList nl_Cat = doc.getElementsByTagName(KEY_ITEM_CATEGORY);
for (int i = 0; i < nl_Cat.getLength(); i++)
{
HashMap<String, String> map = new HashMap<String, String>();
Element cat = (Element) nl_Cat(i);
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
for (int j = 0; j < nl.getLength(); j++)
{
Element e = (Element) nl.item(j);
map.put(KEY_ITEM_NAME, parser.getValue(e, KEY_ITEM_NAME));
map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE));
}
menuItems.add(map);
}
Hope this works!
You are retrieving list of item elements and trying to find category_name in item element. However, looking at your xml, category_name is sibling of item element, not child. So you will not get category name in that way.
You might want to retrieve list of item_category and then populate items from it.
NodeList nl_categories = doc.getElementsByTagName(KEY_ITEM_CATEGORY);
for(int i = 0; i < nl_categories; i++)
{
Element e = (Element) nl.item(i);
String category = parser.getValue(e,KEY_CATEGORY);
NodeList nl = e.getElementsByTagName(KEY_ITEM);
// looping through all item nodes <item>
for (int j = 0; j < nl.getLength(); j++)
{
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(j);
map.put(KEY_CATEGORY, category);
map.put(KEY_ITEM_NAME, parser.getValue(e, KEY_ITEM_NAME));
map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE));
menuItems.add(map);
}
}
I am having some trouble parsing XML in Android from an URL. I don't know if it's the XML parsing that's the problem or only when I am trying to show it on the screen because
setListAdapter(new ArrayAdapter<String>(ANDROIDXMLActivity.this, android.R.layout.simple_list_item_1, stopNumbers));
wont show anything. The code below works perfectly in a java program.
URL: http://maps.travelsouthyorkshire.com/iGNMSearchService.asmx/FindObjectsWithinExtent?xMin=435360&yMin=387260&xMax=435960&yMax=387860&zoomLevel=0
try {
ArrayList<Double> xCords = new ArrayList<Double>();
ArrayList<Double> yCords = new ArrayList<Double>();
ArrayList<String> stopNumbers = new ArrayList<String>();
ArrayList<String> bussLocations = new ArrayList<String>();
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder
.parse(new URL(
"http://maps.travelsouthyorkshire.com/iGNMSearchService.asmx/FindObjectsWithinExtent?xMin=435360&yMin=387260&xMax=435960&yMax=387860&zoomLevel=0")
.openStream());
// normalize text representation
doc.getDocumentElement().normalize();
NodeList listOfObjects = doc.getElementsByTagName("iGNMObject");
for (int s = 0; s < listOfObjects.getLength(); s++) {
Node firstPersonNode = listOfObjects.item(s);
if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {
Element firstPersonElement = (Element) firstPersonNode;
NodeList stopNumList = firstPersonElement
.getElementsByTagName("StopNumber");
Element ageElement = (Element) stopNumList.item(0);
if (ageElement != null) {
NodeList textAgeList = ageElement.getChildNodes();
String stop = ((Node) textAgeList.item(0))
.getNodeValue().trim();
stopNumbers.add(stop);
// ------
// -------
NodeList xPosList = firstPersonElement
.getElementsByTagName("XPosition");
Element firstNameElement = (Element) xPosList.item(0);
NodeList textFNList = firstNameElement.getChildNodes();
String temp2 = ((Node) textFNList.item(0))
.getNodeValue().trim();
double x = Double.parseDouble(temp2);
xCords.add(x);
// -------
NodeList yPosList = firstPersonElement
.getElementsByTagName("YPosition");
Element lastNameElement = (Element) yPosList.item(0);
NodeList textLNList = lastNameElement.getChildNodes();
String temp3 = ((Node) textLNList.item(0))
.getNodeValue().trim();
double y = Double.parseDouble(temp3);
yCords.add(y);
// ----
NodeList stopAkaList = firstPersonElement
.getElementsByTagName("StopAka");
Element stopAka = (Element) stopAkaList.item(0);
NodeList textStopAKAList = stopAka.getChildNodes();
String plats = ((Node) textStopAKAList.item(0))
.getNodeValue().trim();
bussLocations.add(plats);
} else {
}
}// end of if clause
}// end of for loop with s var
setListAdapter(new ArrayAdapter<String>(ANDROIDXMLActivity.this,
android.R.layout.simple_list_item_1, stopNumbers));
} catch (Exception e) {
}
}
}
}
Solved it. I had forgot to add internet permission in the manifest.