AndroidForBeginners: March 2013

Book.java

package com.eaxmple.xmlpullparser.classess;

public class Book {
public String bookId;
public String author;
public String title;
public String genre;
public String publish_date;
public String desc;
public double price;
}

BookParser.java

package com.eaxmple.xmlpullparser.parsers;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;

import android.content.Context;
import android.util.Log;

import com.eaxmple.xmlpullparser.classess.Book;

public class BookParser {
List<Book> mBooksList;
String mXmlFilePath;
Context mContext;
XmlPullParser xpp;
Book tempBook;

public BookParser(Context context,String filePath){
mBooksList=new ArrayList<Book>();
mContext=context;
mXmlFilePath=filePath;
}

public List<Book> parse() throws Exception{
InputStream istr = mContext.getAssets().open(mXmlFilePath);
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
xpp = factory.newPullParser();
xpp.setInput(istr, "UTF-8");
int eventType = xpp.getEventType();

while (eventType != XmlPullParser.END_DOCUMENT)
{
if(eventType == XmlPullParser.START_TAG)
{

String startTag=xpp.getName();
if(startTag.equals("book"))
{
tempBook=new Book();
Map<String,String> attributes = getAttributes(xpp);
tempBook.bookId=attributes.get("id");
}
else if(startTag.equals("author"))
{
tempBook.author=xpp.nextText();
}
else if(startTag.equals("title"))
{
tempBook.title=xpp.nextText();
}
else if(startTag.equals("genre"))
{
tempBook.genre=xpp.nextText();
}
else if(startTag.equals("price"))
{
tempBook.price=Double.parseDouble(xpp.nextText());
}
else if(startTag.equals("publish_date"))
{
tempBook.publish_date=xpp.nextText();
}
else if(startTag.equals("description"))
{
tempBook.desc=xpp.nextText();
}
}
else if(eventType == XmlPullParser.END_TAG)
{
String endTag=xpp.getName();
System.out.println("End Tag "+endTag);
if(endTag.equals("book"))
{
mBooksList.add(tempBook);
}
}
eventType = xpp.next();
}
return mBooksList;
}

private Map<String,String> getAttributes(XmlPullParser parser) throws Exception {
Map<String,String> attrs=null;
int acount=parser.getAttributeCount();
if(acount != -1) {
attrs = new HashMap<String,String>(acount);
for(int x=0;x<acount;x++) {
attrs.put(parser.getAttributeName(x), parser.getAttributeValue(x));
}
}
else {
throw new Exception("Required entity attributes missing");
}
return attrs;
}

}

MainActivity.java

package com.example.xmlpullparser;

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.widget.Toast;

import com.eaxmple.xmlpullparser.classess.Book;

import com.eaxmple.xmlpullparser.parsers.BookParser;

public class MainActivity extends Activity {

ArrayList<Book> books;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

BookParser bookParser=new BookParser(this,"xml/books.xml");

try {

books=(ArrayList<Book>) bookParser.parse();

System.out.println(books.size());

Toast.makeText(getApplicationContext(), "count is"+books.size(), Toast.LENGTH_LONG).show();

for(int i=0;i<books.size()-1;i++)

{

Log.e("xmlPullparser","book id="+books.get(i).bookId+" book name="+books.get(i).title);

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

Assest/xml/books.xml

<?xml version="1.0"?>

<catalog>

<book id="bk101">

<author>Gambardella, Matthew</author>

<title>XML Developer's Guide</title>

<genre>Computer</genre>

<price>44.95</price>

<publish_date>2000-10-01</publish_date>

<description>An in-depth look at creating applications

with XML.</description>

</book>

<book id="bk102">

<author>Ralls, Kim</author>

<title>Midnight Rain</title>

<genre>Fantasy</genre>

<price>5.95</price>

<publish_date>2000-12-16</publish_date>

<description>A former architect battles corporate zombies,

an evil sorceress, and her own childhood to become queen

of the world.</description>

</book>

<book id="bk103">

<author>Corets, Eva</author>

<title>Maeve Ascendant</title>

<genre>Fantasy</genre>

<price>5.95</price>

<publish_date>2000-11-17</publish_date>

<description>After the collapse of a nanotechnology

society in England, the young survivors lay the

foundation for a new society.</description>

</book>

<book id="bk104">

<author>Corets, Eva</author>

<title>Oberon's Legacy</title>

<genre>Fantasy</genre>

<price>5.95</price>

<publish_date>2001-03-10</publish_date>

<description>In post-apocalypse England, the mysterious

agent known only as Oberon helps to create a new life

for the inhabitants of London. Sequel to Maeve

Ascendant.</description>

</book>

<book id="bk105">

<author>Corets, Eva</author>

<title>The Sundered Grail</title>

<genre>Fantasy</genre>

<price>5.95</price>

<publish_date>2001-09-10</publish_date>

<description>The two daughters of Maeve, half-sisters,

battle one another for control of England. Sequel to

Oberon's Legacy.</description>

</book>

<book id="bk106">

<author>Randall, Cynthia</author>

<title>Lover Birds</title>

<genre>Romance</genre>

<price>4.95</price>

<publish_date>2000-09-02</publish_date>

<description>When Carla meets Paul at an ornithology

conference, tempers fly as feathers get ruffled.</description>

</book>

<book id="bk107">

<author>Thurman, Paula</author>

<title>Splish Splash</title>

<genre>Romance</genre>

<price>4.95</price>

<publish_date>2000-11-02</publish_date>

<description>A deep sea diver finds true love twenty

thousand leagues beneath the sea.</description>

</book>

<book id="bk108">

<author>Knorr, Stefan</author>

<title>Creepy Crawlies</title>

<genre>Horror</genre>

<price>4.95</price>

<publish_date>2000-12-06</publish_date>

<description>An anthology of horror stories about roaches,

centipedes, scorpions and other insects.</description>

</book>

<book id="bk109">

<author>Kress, Peter</author>

<title>Paradox Lost</title>

<genre>Science Fiction</genre>

<price>6.95</price>

<publish_date>2000-11-02</publish_date>

<description>After an inadvertant trip through a Heisenberg

Uncertainty Device, James Salway discovers the problems

of being quantum.</description>

</book>

<book id="bk110">

<author>O'Brien, Tim</author>

<title>Microsoft .NET: The Programming Bible</title>

<genre>Computer</genre>

<price>36.95</price>

<publish_date>2000-12-09</publish_date>

<description>Microsoft's .NET initiative is explored in

detail in this deep programmer's reference.</description>

</book>

<book id="bk111">

<author>O'Brien, Tim</author>

<title>MSXML3: A Comprehensive Guide</title>

<genre>Computer</genre>

<price>36.95</price>

<publish_date>2000-12-01</publish_date>

<description>The Microsoft MSXML3 parser is covered in

detail, with attention to XML DOM interfaces, XSLT processing,

SAX and more.</description>

</book>

<book id="bk112">

<author>Galos, Mike</author>

<title>Visual Studio 7: A Comprehensive Guide</title>

<genre>Computer</genre>

<price>49.95</price>

<publish_date>2001-04-16</publish_date>

<description>Microsoft Visual Studio 7 is explored in depth,

looking at how Visual Basic, Visual C++, C#, and ASP+ are

integrated into a comprehensive development

environment.</description>

</book>

</catalog>

AndroidForBeginners

Friday, March 29, 2013

XmlPullParsers sample Code