Parse XML on Android

Question

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 funct

Answer 1

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);
    }
}