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 DOM Parser - retrieving image link from description tag

I'm using DOM Parser to parse this XML feed: http://loc.grupolusofona.pt/index.php/?format=feed
I got the Parser working fine for all tags, i'm just missing ideas to be able to retrieve the image from within the description tag.
The description tag on the feed looks like this:
<description><![CDATA[<div class="K2FeedIntroText"><p><img style="margin: 10px;"
alt="joana soares rostos" src="http://loc.grupolusofona.pt/images/stories/varios/joana%20soares%20rostos.jpg"
height="110" width="120" />Quis ser veterinária mas deixou-se seduzir pela magia
de retratar o real. Joana Soares frequenta o primeiro ano do curso de Fotografia
da Lusófona e descreve a sua paixão pelas fotos como «inexplicável».</p>
</div>]]></description>
And i wanted to retrieve the image link:
http://loc.grupolusofona.pt/images/stories/varios/joana%20soares%20rostos.jpg
My Parser :
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 ) {
if( elem != null){
return elem.getTextContent();
}
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));
}
}
And my Main Activity:
public class Noticias extends ListActivity {
// All static variables
static final String URL = "http://loc.grupolusofona.pt/index.php/?format=feed";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "title";
static final String KEY_DESC = "description";
static final String KEY_LINK = "link";
static final String KEY_PUBDATE = "pubDate";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_noticias);
ArrayList<HashMap<String, Spanned>> menuItems = new ArrayList<HashMap<String, Spanned>>();
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, Spanned> map = new HashMap<String, Spanned>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, Html.fromHtml(parser.getValue(e, KEY_ID)));
map.put(KEY_TITLE, Html.fromHtml(parser.getValue(e, KEY_TITLE)));
map.put(KEY_DESC, Html.fromHtml(parser.getValue(e, KEY_DESC)));
map.put(KEY_PUBDATE, Html.fromHtml(parser.getValue(e, KEY_PUBDATE)));
map.put(KEY_LINK, Html.fromHtml(parser.getValue(e, KEY_LINK)));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.linha_feed,
new String[] { KEY_TITLE, KEY_DESC, KEY_PUBDATE, KEY_LINK }, new int[] {
R.id.title, R.id.desc, R.id.pub, R.id.link});
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 title = ((TextView) view.findViewById(R.id.title)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desc)).getText().toString();
String pub = ((TextView) view.findViewById(R.id.pub)).getText().toString();
String link = ((TextView) view.findViewById(R.id.link)).getText().toString();
// Starting new intent
System.out.println("Title: " + title);
System.out.println("Link: " + link);
System.out.println("Description:" + description);
System.out.println("Pubdate: " + pub);
Intent in = new Intent(Intent.ACTION_VIEW);
in.setData(Uri.parse(link));
startActivity(in);
}
});
}
}
Any ideas ?
Thanks for your time.

Use RegEx with a simple pattern like this:
<\s*img\s*[^>]+src\s*=\s*(['"]?)(.*?)\1
Here use these functions:
public static String getMatch(String patternString, String text, int groupIndex){
Pattern pattern = Pattern.compile(patternString, Pattern.CASE_INSENSITIVE | Pattern.DOTALL );
return RegEx.getMatch(pattern, text, groupIndex);
}
public static String getMatch(Pattern pattern, String text, int groupIndex){
if(text!=null){
Matcher matcher = pattern.matcher(text);
String match = null;
while(matcher.find()){
match = matcher.group(groupIndex);
break;
}
return match;
}else{
return null;
}
}
Then you can plug in that pattern like this:
String imageSource = getMatch("<\\s*img\\s*[^>]+src\\s*=\\s*(['\"]?)(.*?)\\1", description, 2);

Getting content of a XML node by the attribute

I have a XML file like this:
<?xml version="1.0"?>
<settings>
<mail id="sender">
<host>content here</host>
<port>25</port>
<account>tmt#example.com</account>
<password>password</password>
</mail>
<mail id="receiver">
<account>tmt#example.com</account>
</mail>
<mail id="support">
<account>tmt#example.com</account>
</mail>
</settings>
How can I get the attribute of each element, parse the content of each element and save the content in SharedPreference
This is what I've done so far:
The Contructor:
public ReadConfig(Context context, ProgressBar progressBar) throws ParserConfigurationException, SAXException, IOException {
this.context = context;
this.progressBar = progressBar;
folders = new CreateApplicationFolder();
dbf = DocumentBuilderFactory.newInstance();
db = dbf.newDocumentBuilder();
doc = db.parse(new File(folders.getPathToNode() + "/settings_config.xml"));
doc.getDocumentElement().normalize();
}
And my doInBackground method
#Override
protected String doInBackground(String... params) {
Log.i("ROOT NODE: ", doc.getDocumentElement().getNodeName());
NodeList listOfMail = doc.getElementsByTagName("mail");
int totalMail = listOfMail.getLength();
Log.i("LENGTH: ", Integer.toString(totalMail));
for(int i = 0; i < totalMail; i++) {
Node firstMailSetting = listOfMail.item(i);
}
}
From the LogCat I know that there are three elements, which is correct.

import org.w3c.dom.Element;
for(int i = 0; i < totalMail; i++) {
Node firstMailSetting = listOfMail.item(i);
Element e = (Element) firstMailSetting ;
String acc = getTagValue("account", e); <-----
}
private String getTagValue(String sTag, Element eElement) {
try {
NodeList nlList = eElement.getElementsByTagName(sTag).item(0).getChildNodes();
Node nValue = (Node) nlList.item(0);
return nValue.getNodeValue();
}
catch (Exception e) {
return "";
}
}

cannot in parsing nested xml structure

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);
}
}

How to get RTSP Links Android

Am having you-tube links like http://www.youtube.com/v/YR71GnQ4CU4?f=videos&app=youtube_gdata , then how to convert it to RTSP format to play in VideoView.
Am searching gdata api with this: http://gdata.youtube.com/feeds/api/videos?&max-results=20&v=2&format=1&q="+ URLEncoder.encode(activity.criteria) but i cant find how to get related RTSP url.

I got my answer ..thanx to this
Element rsp = (Element)entry.getElementsByTagName("media:content").item(1);
String anotherurl=rsp.getAttribute("url");
In gdata api only we are getting this type of links : rtsp://v3.cache7.c.youtube.com/CiILENy73wIaGQlOCTh0GvUeYRMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp
These are playing in VideoView.

This might be a little late. Here is some working code for people having trouble.
try{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new URL(url).openStream());
doc.getDocumentElement ().normalize ();
NodeList content = doc.getElementsByTagName("media:content");
for(int i=0; i<content.getLength(); i++){
Element rsp = (Element)content.item(i);
result.add(rsp.getAttribute("url"));
}
}catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
}

Below is the function which can get you RTSP link for the youtube video
public static String getUrlVideoRTSP(String urlYoutube) {
try {
String gdy = "http://gdata.youtube.com/feeds/api/videos/";
DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
String id = extractYoutubeId(urlYoutube);
URL url = new URL(gdy + id);
Log.i(MyActivity.class.getSimpleName(), url.toString());
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
Document doc = documentBuilder.parse(connection.getInputStream());
Element el = doc.getDocumentElement();
NodeList list = el.getElementsByTagName("media:content");///media:content
String cursor = urlYoutube;
for (int i = 0; i < list.getLength(); i++) {
Node node = list.item(i);
if (node != null) {
NamedNodeMap nodeMap = node.getAttributes();
HashMap<String, String> maps = new HashMap<String, String>();
for (int j = 0; j < nodeMap.getLength(); j++) {
Attr att = (Attr) nodeMap.item(j);
maps.put(att.getName(), att.getValue());
}
if (maps.containsKey("yt:format")) {
String f = maps.get("yt:format");
if (maps.containsKey("url")) {
cursor = maps.get("url");
}
if (f.equals("1"))
return cursor;
}
}
}
return cursor;
} catch (Exception ex) {
Log.e("Get Url Video RTSP Exception======>>", ex.toString());
}
return urlYoutube;
}
private static String extractYoutubeId(String url) throws MalformedURLException {
String id = null;
try {
String query = new URL(url).getQuery();
if (query != null) {
String[] param = query.split("&");
for (String row : param) {
String[] param1 = row.split("=");
if (param1[0].equals("v")) {
id = param1[1];
}
}
} else {
if (url.contains("embed")) {
id = url.substring(url.lastIndexOf("/") + 1);
}
}
} catch (Exception ex) {
Log.e("Exception", ex.toString());
}
return id;
}