Question

hai every one. i am new to android. in my project i had some problems reading xml files. In my xml i have included some audios and videos paths and i want to read the xml file through the code and i want to display some images n my view if there are some audio or video files. can any body tel how to read the xml file.
thanking you in advance

Answer 1

Ok first you need to create a parser Below is the code to do this:

public static void readTemplateFile(Context context) {

    /**
     Include File Checking
     */

    try {
        XML_Handler_Template myExHan = new XML_Handler_Template();

        InputStreamReader isr =  new
        FileReader( new File(Environment.getExternalStorageDirectory().getPath() + "/Library Template.xml" ));

        XML_Handler_Template.context = context;

        SAXParserFactory spf = SAXParserFactory.newInstance();
        SAXParser sp = spf.newSAXParser();

        XMLReader xr = sp.getXMLReader();

        xr.setContentHandler((ContentHandler) myExHan);

        xr.parse(new InputSource(isr));


    } catch (Exception e) {

        Toast.makeText(context, ">" + e.getMessage(), Toast.LENGTH_LONG).show();


    }

}

You then need a Handler Class. In the above example my class is called XML_Handler_Template.

FileReader( new File(Environment.getExternalStorageDirectory().getPath() + “/FILEPATH/FILE.XML” ));

Here is the XML_Handler_Class at the moment it is blank:

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class XML_Handler_Template extends DefaultHandler{

    public static Context context = null;

@Override
public void startDocument() throws SAXException {
    //this is called when the document is first read
}

@Override
public void startElement(String namespaceURI, String localName,
        String qName, Attributes atts) throws SAXException {
                    //This is called when a new Tag is opened
                    //localName holds the Tag Name, the Value is got from the 
                    //Characters function at the end of this class

                   //the attributes for each tag are stored in the atts array, you can either handle the attribute values here or pass the information to a separate function to handle them,
                   if (atts.getLength()>0){
            for (int i=0;i<atts.getLength();i++){

                addAttrib(atts.getLocalName(i) , atts.getValue(i))  ;

            }
        }
}

@Override
public void endElement(String namespaceURI, String localName, String qName)
throws SAXException {
    //This is called when a Tag is closed
}

@Override
public void endDocument() throws SAXException {
                //this is called when the document is closed
}

@Override
public void characters(char ch[], int start, int length) {
            //This is where the value of a Tag are read
    String value = new String( ch , start , length );
            // You may want to include a replaceAll("\r","") and replaceAll("\n","") to remove any hidden chars

}    

}

have a play with this and see how you get on for now =0) I passed a context to the class so whilst i was learning I could use toasts to show me the values that were being read.