XML parsing from local xml

Question

I'm parsing XML from URL. What changes has been made to parse same XML file from raw folder. Have any idea to how to reduce code ?

This my xml file :umesh.xml

<?xml version="1.0" encoding="utf-8"?>
<appdata>
<brand name="Lovely Products">
<product>Hat</product>
<product>Gloves</product>
</brand>
<brand name="Great Things">
<product>Table</product>
<product>Chair</product>
<product>Bed</product>
</brand>
</appdata> 

Below is my java file :

1. DataHandler.java

   package com.umesh.xmlparsing;
   
   import java.io.BufferedReader;
   import java.io.IOException;
   import java.io.InputStreamReader;
   import java.net.URL;
   import java.net.URLConnection;
   import java.util.ArrayList;
   
   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.content.Context;
   import android.content.res.XmlResourceParser;
   import android.graphics.Color;
   import android.util.Log;
   import android.widget.TextView;
   
   
   
   public class DataHandler extends DefaultHandler{
   
   //list for imported product data
   private ArrayList<TextView> theViews;
   //string to track each entry
   private String currBrand = "";
   //flag to keep track of XML processing
   private boolean isProduct = false;
   //context for user interface
   private Context theContext;
   //constructor
   public DataHandler(Context cont) {
       super();
       theViews = new ArrayList<TextView>();
       theContext = cont;
   }
   
   
   //start of the XML document
   public void startDocument () { Log.i("DataHandler", "Start of XML document"); }
   
   //end of the XML document
   public void endDocument () { Log.i("DataHandler", "End of XML document"); }
   
   //opening element tag
   public void startElement (String uri, String name, String qName, Attributes atts)
   {
       //handle the start of an element
   
       //find out if the element is a brand
       if(qName.equals("brand"))
       {
           //set product tag to false
           isProduct = false;
           //create View item for brand display
           TextView brandView = new TextView(theContext);
           brandView.setTextColor(Color.rgb(73, 136, 83));
           //add the attribute value to the displayed text
           String viewText = "Items from " + atts.getValue("name") + ":";
           brandView.setText(viewText);
           //add the new view to the list
           theViews.add(brandView);
       }
       //the element is a product
       else if(qName.equals("product"))
           isProduct = true;
   }
   
   //closing element tag
   public void endElement (String uri, String name, String qName)
   {
       //handle the end of an element
       if(qName.equals("brand"))
       {
           //create a View item for the products
           TextView productView = new TextView(theContext);
           productView.setTextColor(Color.rgb(192, 199, 95));
           //display the compiled items
           productView.setText(currBrand);
           //add to the list
           theViews.add(productView);
           //reset the variable for future items
           currBrand = "";
       }
   }
   
   //element content
   public void characters (char ch[], int start, int length)
   {
       //process the element content
       //string to store the character content
       String currText = "";
       //loop through the character array
       for (int i=start; i<start+length; i++)
       {
           switch (ch[i]) {
           case '\\':
               break;
           case '"':
               break;
           case '\n':
               break;
           case '\r':
               break;
           case '\t':
               break;
           default:
               currText += ch[i];
               break;
           }
       }
       //prepare for the next item
       if(isProduct && currText.length()>0)
           currBrand += currText+"\n";
   }
   
   public ArrayList<TextView> getData()
   {
       //take care of SAX, input and parsing errors
       try
       {
               //set the parsing driver
           System.setProperty("org.xml.sax.driver","org.xmlpull.v1.sax2.Driver");
               //create a parser
           SAXParserFactory parseFactory = SAXParserFactory.newInstance();
           SAXParser xmlParser = parseFactory.newSAXParser();
               //get an XML reader
           XMLReader xmlIn = xmlParser.getXMLReader();
               //instruct the app to use this object as the handler
           xmlIn.setContentHandler(this);
               //provide the name and location of the XML file **ALTER THIS FOR YOUR FILE**
           URL xmlURL = new URL("http://mydomain.com/umesh.xml");
   
   
               //open the connection and get an input stream
           URLConnection xmlConn = xmlURL.openConnection();
           InputStreamReader xmlStream = new InputStreamReader(xmlConn.getInputStream());
   
               //build a buffered reader
           BufferedReader xmlBuff = new BufferedReader(xmlStream);
   
           //   uuu   XmlResourceParser todolistXml = getResources().getXml(R.raw.c4mh_clinics);
               //parse the data
           xmlIn.parse(new InputSource(xmlBuff));
       }
       catch(SAXException se) { Log.e("AndroidTestsActivity", 
               "SAX Error " + se.getMessage()); }
       catch(IOException ie) { Log.e("AndroidTestsActivity", 
               "Input Error " + ie.getMessage()); }
       catch(Exception oe) { Log.e("AndroidTestsActivity", 
               "Unspecified Error " + oe.getMessage()); }
           //return the parsed product list
       return theViews;
   }
   
   }
   

2. XMLParsing.java

   package com.umesh.xmlparsing;
   
   import java.util.ArrayList;
   
   import android.app.Activity;
   import android.os.Bundle;
   import android.util.Log;
   import android.view.LayoutInflater;
   import android.widget.LinearLayout;
   import android.widget.TextView;
   
   public class XMLParsing extends Activity {
   
   TextView tv;
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
   
       //get a reference to the layout
       LayoutInflater inflater = getLayoutInflater();
       LinearLayout mainLayout = (LinearLayout) inflater.inflate(R.layout.main,null);
       try
       {
               //create an instance of the DefaultHandler class 
               //**ALTER THIS FOR YOUR CLASS NAME**
           DataHandler handler = new DataHandler(getApplicationContext());
               //get the string list by calling the public method
           ArrayList<TextView> newViews = handler.getData();
               //convert to an array
           Object[] products = newViews.toArray();
               //loop through the items, creating a View item for each
           for(int i=0; i<products.length; i++)
           {
               //add the next View in the list
               mainLayout.addView((TextView)products[i]);
           }
       }
       catch(Exception pce) { Log.e("AndroidTestsActivity", "PCE "+pce.getMessage()); }
   
       setContentView(mainLayout);
   }
   
   
   }
   

Answer 1

Please See below link of my answer, it will solve your problem.

Local XML Parsing