How to parse a local XML file in Android?

Merged with Need help in reading an xml file.

I want to retrieve data from an xml file in android app. Below is the code I am working with. I think the if statements I am using are not working well ( they are not picking the description to display). I want to display the text(description) if the id value is for example 2. Please review the code and help me correct it.Thanks.

<?xml version="1.0" encoding="utf-8" ?> 
<Books> 
  <Number id ="1"> 
    <Description>This text is for id whose value is equal to 1. </Description> 
  </Number> 
  <Number id = "2"> 
    <Description>This text is for id whose value is equal to 2. </Description> 
  </Number> 
</Books> 

String stringXmlContent;
try {
    stringXmlContent = getEventsFromAnXML(this);
    tv.setText(stringXmlContent);
} catch (XmlPullParserException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

button1.setOnClickListener(this);

private String getEventsFromAnXML(Activity activity)throws XmlPullParserException, IOException
{
     StringBuffer stringBuffer = new StringBuffer();
     String attVal = null;
     String desc;
     Resources res = activity.getResources();
     XmlResourceParser xrp = res.getXml(R.xml.myxml);
     try {
            xrp.next();
     开发者_StackOverflow中文版       int eventType = xrp.getEventType();
            while (eventType != XmlPullParser.END_DOCUMENT)
            {
                if(eventType == XmlPullParser.START_DOCUMENT)
                {
                    stringBuffer.append(" ");
                }
                if(eventType == XmlPullParser.START_TAG)
                {    
                  if(xrp.getName().equals("Number")){    
                     attVal =  xrp.getAttributeValue(0); 
                  }       
                }
                else if(eventType == XmlPullParser.TEXT)
                {    
                   if(xrp.getName().equals("Description") && attVal.equals("2")){
                   stringBuffer.append(" " + xrp.getText());
                }   

            }

    } catch (XmlPullParserException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return stringBuffer.toString();  
}