Develop Reference

Null Pointer Exception in Android Xml Parsing

I'm developing an Xml parsing application. The URL is not trusted when it is opened from the browser. There is no way to correct it from server side. So I used "trsut anybody" code.
But still I'm getting a null pointer exception.
Please help me with this.
Thanx in advance
this is my code.
public class SitesList {
/** Variables */
private ArrayList<String> From_Currency = new ArrayList<String>();
private ArrayList<String> To_Currency = new ArrayList<String>();
private ArrayList<String> exrt_buy = new ArrayList<String>();
private ArrayList<String> exrt_sell = new ArrayList<String>();
/** In Setter method default it will return arraylist
* change that to add */
public ArrayList<String> getFrom_Currency() {
return From_Currency;
}
public void setFrom_Currency(String From_Currency) {
this.From_Currency.add(From_Currency);
}
public ArrayList<String> getTo_Currency() {
return To_Currency;
}
public void setTo_Currency(String To_Currency) {
this.To_Currency.add(To_Currency);
}
public ArrayList<String> getexrt_buy() {
return exrt_buy;
}
public void setexrt_buy(String exrt_buy) {
this.exrt_buy.add(exrt_buy);
}
public ArrayList<String> getexrt_sell() {
return exrt_sell;
}
public void setexrt_sell(String exrt_sell) {
this.exrt_sell.add(exrt_sell);
}
}
MyXMLHandler class
public class MyXMLHandler extends DefaultHandler {
Boolean currentElement = false;
String currentValue = null;
public static SitesList sitesList = null;
public static SitesList getSitesList() {
return sitesList;
}
public static void setSitesList(SitesList sitesList) {
MyXMLHandler.sitesList = sitesList;
}
#Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
currentElement = true;
if (localName.equals("DOC"))
{
sitesList = new SitesList();
}
/*} else if (localName.equals("website")) {
String attr = attributes.getValue("category");
sitesList.setCategory(attr);
}*/
}
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
currentElement = false;
if (localName.equalsIgnoreCase("From_Currency"))
sitesList.setFrom_Currency(currentValue);
else if (localName.equalsIgnoreCase("To_Currency"))
sitesList.setTo_Currency(currentValue);
else if (localName.equalsIgnoreCase("exrt_buy"))
sitesList.setexrt_buy(currentValue);
else if (localName.equalsIgnoreCase("exrt_sell"))
sitesList.setexrt_sell(currentValue);
}
#Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (currentElement) {
currentValue = new String(ch, start, length);
currentElement = false;
}
}
}
XMLParsingExample class
public class XMLParsingExample extends Activity {
/** Create Object For SiteList Class */
SitesList sitesList = null;
URL url;
HttpsURLConnection https;
HttpURLConnection conn = null;
final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
#Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
url = new URL("https://222.165.187.91/ex_rate/XML_LOLC_EXRT.xml");
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
if (url.getProtocol().toLowerCase().equals("https")) {
trustAllHosts();
try {
https = (HttpsURLConnection) url.openConnection();
} catch (IOException e) {
e.printStackTrace();
}
https.setHostnameVerifier(DO_NOT_VERIFY);
conn = https;
} else {
try {
conn = (HttpURLConnection) url.openConnection();
} catch (IOException e) {
e.printStackTrace();
}
}
/** Create a new layout to display the view */
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);
/** Create a new textview array to display the results */
TextView From_Currency[];
TextView To_Currency[];
TextView exrt_buy[];
TextView exrt_sell[];
try {
/** Handling XML */
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
/** Send URL to parse XML Tags */
URL sourceUrl = new URL("https://222.165.187.91/ex_rate/XML_LOLC_EXRT.xml");
/** Create handler to handle XML Tags ( extends DefaultHandler ) */
MyXMLHandler myXMLHandler = new MyXMLHandler();
xr.setContentHandler(myXMLHandler);
xr.parse(new InputSource(sourceUrl.openStream()));
} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}
/** Get result from MyXMLHandler SitlesList Object */
sitesList = MyXMLHandler.sitesList;
/** Assign textview array lenght by arraylist size */
From_Currency = new TextView[sitesList.getFrom_Currency().size()];
To_Currency = new TextView[sitesList.getTo_Currency().size()];
exrt_buy = new TextView[sitesList.getexrt_buy().size()];
exrt_sell = new TextView[sitesList.getexrt_sell().size()];
/** Set the result text in textview and add it to layout */
for (int i = 0; i < sitesList.getFrom_Currency().size(); i++) {
From_Currency[i] = new TextView(this);
From_Currency[i].setText("Name = "+sitesList.getFrom_Currency().get(i));
To_Currency[i] = new TextView(this);
To_Currency[i].setText("Website = "+sitesList.getTo_Currency().get(i));
exrt_buy[i] = new TextView(this);
exrt_buy[i].setText("Website Category = "+sitesList.getexrt_buy().get(i));
exrt_sell[i] = new TextView(this);
exrt_sell[i].setText("Website Category = "+sitesList.getexrt_sell().get(i));
layout.addView(From_Currency[i]);
layout.addView(To_Currency[i]);
layout.addView(exrt_buy[i]);
layout.addView(exrt_sell[i]);
}
/** Set the layout view to display */
setContentView(layout);
}
private void trustAllHosts() {
// Create a trust manager that does not validate certificate chains
TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[] {};
}
#Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] arg0, String arg1)
throws java.security.cert.CertificateException {
// TODO Auto-generated method stub
}
#Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] arg0, String arg1)
throws java.security.cert.CertificateException {
// TODO Auto-generated method stub
}
} };
// Install the all-trusting trust manager
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
HttpsURLConnection
.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
}
}

RSS Reader doesent fetch HTML Characters

The RSS Reader doesent fetch HTML Characters like "#8220;" so when the feed is "Hey#8220;" the App shows only "Hey" but i doesent know why. I tried things like Html.fromHtml, but it doesent work. Does anyone see the mistake?
Thanks for answers
`public class AndroidRssReader extends ListActivity {
private RSSFeed myRssFeed = null;
TextView feedTitle;
TextView feedDescribtion;
TextView feedPubdate;
TextView feedLink;
public class MyCustomAdapter extends ArrayAdapter<RSSItem> {
public MyCustomAdapter(Context context, int textViewResourceId,
List<RSSItem> list) {
super(context, textViewResourceId, list);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
//return super.getView(position, convertView, parent);
View row = convertView;
if(row==null){
LayoutInflater inflater=getLayoutInflater();
row=inflater.inflate(R.layout.row, parent, false);
}
TextView listTitle=(TextView)row.findViewById(R.id.listtitle);
listTitle.setText(myRssFeed.getList().get(position).getTitle());
TextView listPubdate=(TextView)row.findViewById(R.id.listpubdate);
listPubdate.setText(myRssFeed.getList().get(position).getPubdate());
if (position%2 == 0){
listTitle.setBackgroundColor(0xff101010);
listPubdate.setBackgroundColor(0xff101010);
}
else{
listTitle.setBackgroundColor(0xff080808);
listPubdate.setBackgroundColor(0xff080808);
}
return row;
}
}
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
feedTitle = (TextView)findViewById(R.id.feedtitle);
feedDescribtion = (TextView)findViewById(R.id.feeddescribtion);
feedPubdate = (TextView)findViewById(R.id.feedpubdate);
feedLink = (TextView)findViewById(R.id.feedlink);
readRss();
}
private void readRss(){
feedTitle.setText("--- wait ---");
feedDescribtion.setText("");
feedPubdate.setText("");
feedLink.setText("");
setListAdapter(null);
Toast.makeText(this, "News werden geladen...", Toast.LENGTH_LONG).show();
try {
URL rssUrl = new URL("MYURL");
SAXParserFactory mySAXParserFactory = SAXParserFactory.newInstance();
SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
XMLReader myXMLReader = mySAXParser.getXMLReader();
RSSHandler myRSSHandler = new RSSHandler();
myXMLReader.setContentHandler(myRSSHandler);
InputSource myInputSource = new InputSource(rssUrl.openStream());
myXMLReader.parse(myInputSource);
myRssFeed = myRSSHandler.getFeed();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (myRssFeed!=null)
{
Calendar c = Calendar.getInstance();
String strCurrentTiime = "\n(Time of Reading - "
+ c.get(Calendar.HOUR_OF_DAY)
+ " : "
+ c.get(Calendar.MINUTE) + ")\n";
feedTitle.setText(myRssFeed.getTitle() + strCurrentTiime);
feedDescribtion.setText(myRssFeed.getDescription());
feedPubdate.setText(myRssFeed.getPubdate());
feedLink.setText(myRssFeed.getLink());
MyCustomAdapter adapter =
new MyCustomAdapter(this, R.layout.row, myRssFeed.getList());
setListAdapter(adapter);
}
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
/*Intent intent = new Intent(this,ShowDetails.class);
Bundle bundle = new Bundle();
bundle.putString("keyTitle", myRssFeed.getItem(position).getTitle());
bundle.putString("keyDescription", myRssFeed.getItem(position).getDescription());
bundle.putString("keyLink", myRssFeed.getItem(position).getLink());
bundle.putString("keyPubdate", myRssFeed.getItem(position).getPubdate());
intent.putExtras(bundle);
startActivity(intent);*/
Uri feedUri = Uri.parse(myRssFeed.getItem(position).getLink());
Intent myIntent = new Intent(Intent.ACTION_VIEW, feedUri);
startActivity(myIntent);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
menu.add(0, 0, 0, "Refresh");
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch(item.getItemId()){
case (0): readRss();
break;
default:
break;
}
return true;
}
}`
public class RSSFeed {
private String title = null;
private String description = null;
private String link = null;
private String pubdate = null;
private List<RSSItem> itemList;
RSSFeed(){
itemList = new Vector<RSSItem>(0);
}
void addItem(RSSItem item){
itemList.add(item);
}
RSSItem getItem(int location){
return itemList.get(location);
}
List<RSSItem> getList(){
return itemList;
}
void setTitle(String value)
{
title = value;
}
void setDescription(String value)
{
description = value;
}
void setLink(String value)
{
link = value;
}
void setPubdate(String value)
{
pubdate = value;
}
String getTitle()
{
return title;
}
String getDescription()
{
return description;
}
String getLink()
{
return link;
}
String getPubdate()
{
return pubdate;
}
}
public class RSSHandler extends DefaultHandler {
final int state_unknown = 0;
final int state_title = 1;
final int state_description = 2;
final int state_link = 3;
final int state_pubdate = 4;
int currentState = state_unknown;
RSSFeed feed;
RSSItem item;
boolean itemFound = false;
RSSHandler(){
}
RSSFeed getFeed(){
return feed;
}
#Override
public void startDocument() throws SAXException {
// TODO Auto-generated method stub
feed = new RSSFeed();
item = new RSSItem();
}
#Override
public void endDocument() throws SAXException {
// TODO Auto-generated method stub
}
#Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
// TODO Auto-generated method stub
if (localName.equalsIgnoreCase("item")){
itemFound = true;
item = new RSSItem();
currentState = state_unknown;
}
else if (localName.equalsIgnoreCase("title")){
currentState = state_title;
}
else if (localName.equalsIgnoreCase("description")){
currentState = state_description;
}
else if (localName.equalsIgnoreCase("link")){
currentState = state_link;
}
else if (localName.equalsIgnoreCase("pubdate")){
currentState = state_pubdate;
}
else{
currentState = state_unknown;
}
}
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
// TODO Auto-generated method stub
if (localName.equalsIgnoreCase("item")){
feed.addItem(item);
}
}
#Override
public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Auto-generated method stub
String strCharacters = new String(ch,start,length);
if (itemFound==true){
// "item" tag found, it's item's parameter
switch(currentState){
case state_title:
item.setTitle(strCharacters);
break;
case state_description:
item.setDescription(strCharacters);
break;
case state_link:
item.setLink(strCharacters);
break;
case state_pubdate:
item.setPubdate(strCharacters);
break;
default:
break;
}
}
else{
// not "item" tag found, it's feed's parameter
switch(currentState){
case state_title:
feed.setTitle(strCharacters);
break;
case state_description:
feed.setDescription(strCharacters);
break;
case state_link:
feed.setLink(strCharacters);
break;
case state_pubdate:
feed.setPubdate(strCharacters);
break;
default:
break;
}
}
currentState = state_unknown;
}
}
public class RSSItem {
private String title = null;
private String description = null;
private String link = null;
private String pubdate = null;
RSSItem(){
}
void setTitle(String value)
{
value.replace("#8220;", "hi");
title =value;
}
void setDescription(String value)
{
description = value;
}
void setLink(String value)
{
link = value;
}
void setPubdate(String value)
{
pubdate = value;
}
String getTitle()
{
return title;
}
String getDescription()
{
return description;
}
String getLink()
{
return link;
}
String getPubdate()
{
return pubdate;
}
/*#Override
public String toString() {
// TODO Auto-generated method stub
return title;
}*/
}

InputSource myInputSource = new InputSource(rssUrl.openStream());
myXMLReader.parse(myInputSource);
Set an encoding to your input source or stream. This sample code can help you.

parsing XML online file Android

I am making an application for Android and I need to display an XML file of this page:http://www.bovalpo.com/cgi-local/xml_bcv.pl?URL=7009
I tried the solutions given on the page but I find it wrong since it is not displayed when you run the application. I just want to show "tipo= DOLAR SPOT INTERCAMBIO"
This is the XML CODE
and this is my code:
xmlpruebaprueba.jar
XMLdataCollected sitesList= null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_xmlpruebaprueba);
//creando un Layout
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);
//creando TextView
TextView Registro[];
TextView Tipo[];
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
URL sourceURL = new URL("http://www.bovalpo.com/cgi-local/xml_bcv.pl?URL=7009");
handlingXml HandlingXml = new handlingXml();
xr.setContentHandler(HandlingXml);
xr.parse(new InputSource(sourceURL.openStream()));
}catch (Exception e){
System.out.println("XML Parsing Exception= " + e);
}
sitesList = handlingXml.sitesList;
Registro = new TextView[sitesList.getRegistro().size()];
Tipo = new TextView[sitesList.getTipo().size()];
for (int i = 0; i < sitesList.getRegistro().size(); i++) {
Registro[i] = new TextView(this);
Registro[i].setText("Registro = "+sitesList.getRegistro().get(i));
Tipo[i] = new TextView(this);
Tipo[i].setText("Tipo = "+sitesList.getTipo().get(i));
layout.addView(Registro[i]);
layout.addView(Tipo[i]);
}
}
}
and this is my handler
Boolean currentElement = false;
String currentValue = null;
public static XMLdataCollected sitesList = null;
public static XMLdataCollected getDataCollected (){
return sitesList;
}
public static void setSitesList(XMLdataCollected sitesList){
handlingXml.sitesList = sitesList;
}
#Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
// TODO Auto-generated method stub
currentElement = true;
if(localName.equals("Root"))
{
sitesList = new XMLdataCollected();
}else if (localName.equals("Registro")){
String attr = attributes.getValue("tipo");
sitesList.setTipo(attr);
}
}
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
// TODO Auto-generated method stub
currentElement = false;
if (localName.equalsIgnoreCase("Registro"))
sitesList.setRegistro(currentValue);
else if (localName.equalsIgnoreCase("Root"))
sitesList.setRoot(currentValue);
}
#Override
public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Auto-generated method stub
if (currentElement) {
currentValue = new String(ch, start, length);
currentElement = false;
}
}
}
and this is my dataCollected
public class XMLdataCollected {
private ArrayList<String> root = new ArrayList<String>();
private ArrayList<String> registro = new ArrayList<String>();
private ArrayList<String> tipo = new ArrayList<String>();
public ArrayList<String> getRoot (){
return root;
}
public void setRoot(String root){
this.root.add(root);
}
public ArrayList<String> getRegistro (){
return registro;
}
public void setRegistro(String registro){
this.registro.add(registro);
}
public ArrayList<String> getTipo (){
return tipo;
}
public void setTipo(String tipo){
this.tipo.add(tipo);
}
}

You are calling your Web Request on main UI thread.
PLEASE DO NOT DO THIS
use AsyncTask to call web your request.

how to do nested parsing using SAX Parser in android

I have a xml like this :
<channel>
<item>
<link>http://uopnews.unipune.ac.in/Lists/Calendar/DispForm.aspx?ID=14</link>
<description><![CDATA[<div><b>Location:</b> PUMBA Auditorium - University of Pune</div> <div><b>Start Time:</b> 5/15/2012 11:00 AM</div>
<div><b>End Time:</b> 5/15/2012 2:00 PM</div>
<div><b>Description:</b> <div>General B. C. Joshi Memorial Lecture 2012- Perspective on War in the 21st Century - By Lt. Gen. A. K. Singh</div></div>
<div><b>Attachments:</b> http://uopnews.unipune.ac.in/Lists/Calendar/Attachments/14/bcjoshi2012[1].pdf<br></div>
]]></description>
</item>
</channel>
I can parse upto description tag using SAX Parser here is my SAXhandler class.
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import android.R.string;
import android.util.Log;
public class XMLParsingHandler extends DefaultHandler {
private static final String NEW_DATA_SET = "image";
private String currentValue = "";
private String currentTag = "";
private HashMap<String, Object> root;
private HashMap<String, String> child;
private String[] tagArray = null;
private ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
private String describe;
public XMLParsingHandler(String[] tagArray) {
this.tagArray = tagArray;
}
public void parseContent(String urlStr) {
try {
URL url = new URL(urlStr);
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
SAXParser saxParser = saxParserFactory.newSAXParser();
XMLReader xmlReader = saxParser.getXMLReader();
xmlReader.setContentHandler(this);
xmlReader.parse(new InputSource(url.openStream()));
Log.d("PRASER", "Afer parsering done" + arraylist);
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void startDocument() throws SAXException {
super.startDocument();
root = new HashMap<String, Object>();
System.out.println("root=" + root);
}
#Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
super.startElement(uri, localName, qName, attributes);
Log.d("tag", "StartElement started here");
currentTag = localName;
Log.d("start", "in start doc current atg---------: " + currentTag);
if (localName.equals(NEW_DATA_SET)) {
child = new HashMap<String, String>();
currentValue = new String();
}
describe=new String();
}
#Override
public void characters(char[] ch, int start, int length)
throws SAXException {
super.characters(ch, start, length);
currentValue = new String(ch, start, length);
Log.d("other", "in CHARACTER : CurrentValue=---------" + currentValue
+ " currentTag-------" + currentTag);
if(currentTag.equals("description") ) {
String str= new String(ch, start, length);
//describe=new String();
describe=describe+""+currentValue;
Log.d("describe", "in CHARACTER : describe=---------" + describe);
}
}
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
super.endElement(uri, localName, qName);
Log.d("end", "currentTag:"+currentTag+"------currentValue"+currentValue);
if(child!=null)
{
for (int i = 0; i < tagArray.length; i++) {
if (currentTag.equals("description")){
child.put(currentTag, currentValue);
}
if (currentTag.equals(tagArray[i]))
{
child.put(currentTag, currentValue);
Log.d("tagarray","currentTag="+ currentTag+"currentValue:"+currentValue);
currentValue=null;
currentValue=new String();
currentTag=null;
currentTag=new String();
}
}
if (localName.equals(tagArray[tagArray.length - 1])) {
arraylist.add(child);
child=null;
child=new HashMap<String, String>();
}
}
}
#Override
public void endDocument() throws SAXException {
super.endDocument();
Log.d("tag", "in end doc");
}
public ArrayList<HashMap<String, String>> getArraylist() {
return arraylist;
}
public void setArraylist(ArrayList<HashMap<String, String>> arraylist) {
this.arraylist = arraylist;
}
#Override
public String toString() {
return arraylist.toString();
}
}
and I am Calling it like this :
userMap = new HashMap<String, String>();
XMLParsingHandler x = new XMLParsingHandler(tagArray);
x.parseContent(url);
System.out.println("Element FOund");
userMap = x.getArraylist().get(0);
System.out.println("Map " + userMap);
here my userMap only print valu upto description tag after it only shows null value. i need all data from description. Is there any way?

Find the below sax parser code
public class IndianNewsHandler implements ContentHandler {
private String value = "";
private Item item = null;
private TextView tvRef = null;
private Activity myActivity = null;
private static IndianNewsHandler mIndianNewsHandler;
public static IndianNewsHandler getInstance() {
if (mIndianNewsHandler == null) {
mIndianNewsHandler = new IndianNewsHandler();
}
return mIndianNewsHandler;
}
private IndianNewsHandler() {
}
private ArrayList<Item> content = new ArrayList<Item>();
// private ArrayList<String> myList = new ArrayList<String>();
private boolean STATUS_PARSE = true;
private boolean ITEM_STATUS = false;
public ArrayList<Item> getData() {
return content;
}
public void startElement(String namespaceURI, String localName,
String qName, Attributes atts) throws SAXException {
if (STATUS_PARSE) {
this.value = localName;
if (localName.equals("item")) {
item = new Item();
ITEM_STATUS = true;
}
}
}
public void characters(char[] text, int start, int length)
throws SAXException {
if (STATUS_PARSE && ITEM_STATUS) {
StringBuffer buffer = new StringBuffer();
buffer.append(text, 0, length);
if (buffer != null) {
if (this.value.equals("title")) {
System.out.println("I am in title"
+ buffer.toString().trim());
if (buffer.toString().trim().length() > 1)
item.setTitle(buffer.toString().trim());
} else if (value.equals("description"))
{
String url = buffer.toString().trim();
try {
if (url.contains("img src=")) {
final String url_string = url.split("img src=")[1]
.split(">")[0].replace("'", "");
System.out.println("FInal URL :" + url_string);
if (url_string != null) {
//here i am creating async task for convert image
new CovertingImageToByte(url_string).execute();
if (buffer.toString().trim().length() > 1) {
String des = buffer.toString().split(">")[1];
item.setDes(des);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
class CovertingImageToByte extends AsyncTask<String,Integer, String>{
String imageUrl;
public CovertingImageToByte(String urlString) {
this.imageUrl=urlString;
}
#Override
protected String doInBackground(String... params) {
try {
InputStream is = new URL(imageUrl)
.openStream();
Bitmap bitmap = BitmapFactory
.decodeStream(is);
byte[] mybyt = null;
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG,
0, stream);
mybyt = stream.toByteArray();
System.out.println("test"
+ mybyt.length);
item.setImg(mybyt);
// System.out.println("Finallly List123 size ::::::::::"+content.get(0).getImg().length);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
public void endElement(String namespaceURI, String localName, String qName)
throws SAXException {
if (STATUS_PARSE) {
if (localName.equals("item")) {
content.add(item);
}
if (content.size() >= 15) {
STATUS_PARSE = false;
}
}
}
#Override
// do nothing methods
public void setDocumentLocator(Locator locator) {
}
public void startDocument() throws SAXException {
}
public void endDocument() throws SAXException {
System.out.println("Finallly List size ::::::::::" + content.get(1));
}
public void startPrefixMapping(String prefix, String uri)
throws SAXException {
}
public void endPrefixMapping(String prefix) throws SAXException {
}
public void skippedEntity(String name) throws SAXException {
}
public void ignorableWhitespace(char[] text, int start, int length)
throws SAXException {
}
public void processingInstruction(String target, String data)
throws SAXException {
}
}

Parse XML on Android

I am trying to use the API for our billing system in an Android Application, but I am having trouble figuring out how to parse the XML that it returns. Here is what my function looks like thus far...
public void ParseData(String xmlData)
{
try
{
// Document Builder
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder db = factory.newDocumentBuilder();
// Input Stream
InputSource inStream = new InputSource();
inStream.setCharacterStream(new StringReader(xmlData));
// Parse Document into a NodeList
Document doc = db.parse(inStream);
NodeList nodes = doc.getElementsByTagName("ticket");
// Loop NodeList and Retrieve Element Data
for(int i = 0; i < nodes.getLength(); i++)
{
Node node = nodes.item(i);
if (node instanceof Element)
{
Element child = (Element)node;
String id = child.getAttribute("id");
}
}
}
catch(SAXException e)
{
}
}
and here is what the XML data looks like that is returned. I need to loop through each and pull each element out, but I cant figure out how to do that with the DOM parser.
<whmcsapi>
<action>gettickets</action>
<result>success</result>
<totalresults>1</totalresults>
<startnumber>0</startnumber>
<numreturned>1</numreturned>
<tickets>
<ticket>
<id>1</id>
<tid>557168</tid>
<deptid>1</deptid>
<userid>1</userid>
<name><![CDATA[Array]]></name>
<email></email>
<cc></cc>
<c>TmDEga5v</c>
<date>2009-08-03 23:14:32</date>
<subject><![CDATA[Test Ticket]]></subject>
<message><![CDATA[This is a test ticket>
----------------------------
IP Address: xxx.xxx.xxx.xxx]]></message>
<status>Open</status>
<priority>Medium</priority>
<admin></admin>
<attachment></attachment>
<lastreply>2009-08-04 12:14:18</lastreply>
<flag>0</flag>
<service></service>
</ticket>
</tickets>
</whmcsapi>

Yes SAX parser is the solution and here is the basic code to get you started:
void parseExampleFunction(){
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
File myFile = new File( //the XML file which you need to parse );
myFile.createNewFile();
FileInputStream fOut = new FileInputStream(myFile);
BufferedInputStream bos = new BufferedInputStream( fOut );
/** Create handler to handle XML Tags ( extends DefaultHandler ) */
MessagesXMLHandler myXMLHandler = new MessagesXMLHandler(context);
xr.setContentHandler(myXMLHandler);
xr.parse(new InputSource(bos));
}
// the class where the parsing logic needs to defined.This preferably can be in a different .java file
public class MessagesXMLHandler extends DefaultHandler{
//this function is called automatically when a start tag is encountered
#Override
public void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException
//variable localName is the name of the tag
//this function is called autiomatically when an end tag is encountered
#Override
public void endElement(String uri, String localName, String qName) throws SAXException {
}
//this function gets called to return the value stored betweeen the closing and opening tags
#Override
public void characters(char[] ch, int start, int length) throws SAXException {
//now variable value has the value stored between the closing and opening tags
String value=new String(ch,start,length);
}
}

for parse xml on android best way is to use SAXParser. i explained it bellow with demo....
first of all create your activity class like as bellw.
public class ActivityForSax extends ListActivity {
private ProgressDialog pDialog;
private ItemXMLHandler myXMLHandler;
private String rssFeed = "https://www.dropbox.com/s/t4o5wo6gdcnhgj8/imagelistview.xml?dl=1";
private TextView textview;
private ListView mListView;
private ArrayList<HashMap<String, String>> menuItems;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xml_dom);
textview = (TextView)findViewById(R.id.textView1);
doParsing();
mListView = getListView();
}
public void doParsing(){
if (isNetworkAvailable()) {
textview.setText("Loading...Please wait...");
new AsyncData().execute(rssFeed);
} else {
showToast("No Network Connection!!!");
}
}
class AsyncData extends AsyncTask<String, Void, Void> {
#Override
protected void onPreExecute() {
menuItems = new ArrayList<HashMap<String, String>>();
pDialog = new ProgressDialog(ActivityForSax.this);
pDialog.setTitle("Loading....");
pDialog.setMessage("Please wait...");
pDialog.show();
super.onPreExecute();
}
#Override
protected Void doInBackground(String... params) {
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
myXMLHandler = new ItemXMLHandler();
xr.setContentHandler(myXMLHandler);
URL _url = new URL(params[0]);
xr.parse(new InputSource(_url.openStream()));
} catch (ParserConfigurationException pce) {
Log.e("SAX XML", "sax parse error", pce);
} catch (SAXException se) {
Log.e("SAX XML", "sax error", se);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
textview.setText("Done!!!");
if (pDialog != null && pDialog.isShowing()) {
pDialog.dismiss();
}
ArrayList<Bean> itemsList = myXMLHandler.getItemsList();
for (int i = 0; i < itemsList.size(); i++) {
Bean objBean = itemsList.get(i);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put("TITLE :: ", objBean.getTitle());
map.put("DESC :: ", objBean.getDesc());
map.put("PUBDATE :: ", objBean.getPubDate());
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(ActivityForSax.this, menuItems,
R.layout.list_item,
new String[] { "TITLE :: ", "DESC :: ", "PUBDATE :: " }, new int[] {
R.id.name, R.id.email, R.id.mobile });
mListView.setAdapter(adapter);
}
}
public void showToast(String msg) {
Toast.makeText(ActivityForSax.this, msg, Toast.LENGTH_LONG).show();
}
public boolean isNetworkAvailable() {
ConnectivityManager connectivity = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
return false;
} else {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}
}
now you need to create default handler class for parsing xml data.
public class ItemXMLHandler extends DefaultHandler {
Boolean currentElement = false;
String currentValue = "";
Bean item = null;
private ArrayList<Bean> itemsList = new ArrayList<Bean>();
public ArrayList<Bean> getItemsList() {
return itemsList;
}
// Called when tag starts
#Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
currentElement = true;
currentValue = "";
if (localName.equals("item")) {
item = new Bean();
}
}
// Called when tag closing
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
currentElement = false;
if (localName.equals("id")) {
item.setId(currentValue);
} else if (localName.equals("title")) {
item.setTitle(currentValue);
} else if (localName.equals("desc")) {
item.setDesc(currentValue);
} else if (localName.equals("pubDate")) {
item.setPubDate(currentValue);
} else if (localName.equals("link")) {
item.setLink(currentValue);
} else if (localName.equals("item")) {
itemsList.add(item);
}
}
// Called to get tag characters
#Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (currentElement) {
currentValue = currentValue + new String(ch, start, length);
}
}
}
and finally your Bean class like as...
public class Bean {
private String id;
private String title;
private String desc;
private String pubDate;
private String link;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getPubDate() {
return pubDate;
}
public void setPubDate(String pubDate) {
this.pubDate = pubDate;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.link = link;
}
}

Add java-json.jar in library folder
Compile files ('libs/java-json.jar') //add this line into your build
Here is the code to convert xml response to json response:
JSONObject jsonObj = null;
try {
jsonObj = XML.toJSONObject(response.toString());
} catch (JSONException e) {
Log.e("JSON exception", e.getMessage());
e.printStackTrace();
}