Volley adapter for making XML Requests. It uses Simple-XML for serializing XML to Objects (http://simple.sourceforge.net/). Code is based of GsonRequest. Hope someone finds it useful.

SimpleXmlRequest.java

import java.io.UnsupportedEncodingException;
import java.util.Map;

import org.simpleframework.xml.Serializer;
import org.simpleframework.xml.core.Persister;

import com.android.volley.AuthFailureError;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.HttpHeaderParser;


/**
 * Simple Volley Class for doing XML HTTP Requests which are parsed 
 * into Java objects by Simple @see {{@link http://simple.sourceforge.net/}
 */
public class SimpleXmlRequest<T> extends Request<T> {
    
    private static final Serializer serializer = new Persister();
    private final Class<T> clazz;
    private final Map<String, String> headers;
    private final Listener<T> listener;
 
    
    /**
     * Make HTTP request and return a parsed object from Response
     * Invokes the other constructor. 
     * 
     * @see SimpleXmlRequest#SimpleXmlRequest(int, String, Class, Map, Listener, ErrorListener)
     */
    public SimpleXmlRequest(int method, String url, Class<T> clazz, 
    		Listener<T> listener, ErrorListener errorListener) {
        this(method, url, clazz, null, listener, errorListener);
    }
    
    
    /**
     * Make HTTP request and return a parsed object from XML Response
     *
     * @param url URL of the request to make
     * @param clazz Relevant class object
     * @param headers Map of request headers
     * @param listener
     * @param errorListener
     * 
     */
    public SimpleXmlRequest(int method, String url, Class<T> clazz, Map<String, String> headers,
            Listener<T> listener, ErrorListener errorListener) {    	
        super(method, url, errorListener);        
        this.clazz = clazz;
        this.headers = headers;
        this.listener = listener;
    }    

    
    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        return headers != null ? headers : super.getHeaders();
    }
 
    
    @Override
    protected void deliverResponse(T response) {
        listener.onResponse(response);
    }
 
    
    @Override
    protected Response<T> parseNetworkResponse(NetworkResponse response) 
    {
        try {
            
       	    String data = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
            return Response.success(serializer.read(clazz, data), 
            			    HttpHeaderParser.parseCacheHeaders(response));
        } 
        catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } 
        catch (Exception e) {
			return Response.error(new VolleyError(e.getMessage()));
		} 
    }
}

A POJO class who works with this XML:
http://www.w3schools.com/xml/note.xml

import org.simpleframework.xml.Element;
import org.simpleframework.xml.Root;
@root(name="note",strict = false)
public class Usuario {

@Element(name = "to", required = false)
private String to;
@Element(name = "from", required = false)
private String from;
@Element(name = "heading", required = false)
private String heading;
@Element(name = "body", required = false)
private String body;

public String getTo(){
    return to;
}

public String getFrom() {
    return from;
}

public String getHeading() {
    return heading;
}

public String getBody() {
    return body;
}

}

If you need to work with a list, then read this:
http://stackoverflow.com/questions/18317273/deserializing-with-simplexml

Hello guys, I want to handle this xml file

<rss xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" version="2.0"> 

    <channel>
        <title>...</title>
        <atom:link href="..." rel="self" type="application/rss+xml"/>
        <link>...</link>
        <description>...</description>
        <lastBuildDate>Mon, 23 Mar 2015 14:17:24 +0000</lastBuildDate>
        <language>en-US</language>
        <sy:updatePeriod>hourly</sy:updatePeriod>
        <sy:updateFrequency>1</sy:updateFrequency>
        <generator>...</generator>
            <item>
                <title>...</title>
                <link>...</link>
                <comments>...</comments>
                <pubDate>...</pubDate>
                <dc:creator><![CDATA[ ... ]]></dc:creator>
                <category><![CDATA[ ... ]]></category>
                <category><![CDATA[ ... ]]></category>
                <category><![CDATA[ ... ]]></category>
                <category><![CDATA[ ... ]]></category>
                <category><![CDATA[ ... ]]></category>
                <guid isPermaLink="false">...</guid>
                <description><![CDATA[<img width="740" height="493" src="HTTP://...jpg"             class="attachment- wp-post-image" alt="DSC" style="float:left; margin:0 15px 15px 0;" /> ... ]]>
                </description>
                <content:encoded>
                <![CDATA[<img width="740" height="493" src="http://...jpg" class="attachment- wp-post-image" alt="DSC" style="float:left; margin:0 15px 15px 0;" /> bla bla...
]]>
                </content:encoded>
                <wfw:commentRss>...</wfw:commentRss>
                <slash:comments>0</slash:comments>
            </item>
            <item>
            ....
            </item>
</rss>

I want to get the<title> from the <item>and the src="..." from the <description> please tell me how to do that with your class. And how it has to be the POJO class?
I tried what allanfallas said but no success.
Can someone help me?

Hi,
I when I am running my app I am getting this

I/dalvikvm﹕ Could not find method javax.xml.stream.XMLInputFactory.newInstance, referenced from method org.simpleframework.xml.stream.StreamProvider.<init>
W/dalvikvm﹕ VFY: unable to resolve static method 14456: Ljavax/xml/stream/XMLInputFactory;.newInstance ()Ljavax/xml/stream/XMLInputFactory; 
W/dalvikvm﹕ VFY: unable to find class referenced in signature (Ljavax/xml/stream/XMLEventReader;)
W/dalvikvm﹕ VFY: unable to find class referenced in signature (Ljavax/xml/stream/XMLEventReader;)
I/dalvikvm﹕ Could not find method javax.xml.stream.XMLInputFactory.createXMLEventReader, referenced from method org.simpleframework.xml.stream.StreamProvider.provide
VFY: unable to resolve virtual method 14453: Ljavax/xml/stream/XMLInputFactory;.createXMLEventReader (Ljava/io/InputStream;)Ljavax/xml/stream/XMLEventReader;
Could not find method javax.xml.stream.XMLInputFactory.createXMLEventReader, referenced from method org.simpleframework.xml.stream.StreamProvider.provide
VFY: unable to resolve virtual method 14454: Ljavax/xml/stream/XMLInputFactory;.createXMLEventReader (Ljava/io/Reader;)Ljavax/xml/stream/XMLEventReader;

Is this because I don't use stax-1.2.0.jar , stax-api-1.0.1.jar , xpp3-1.1.3_8.jar ?

For the ones having the same problem as @ArcturusArc (just above me), you don't really need to worry about those messages.. if you want to know why, here you have a good reading https://robertmassaioli.wordpress.com/2011/04/21/simple-xml-in-android-1-5-and-up/ .

The first time I used this SimpleXMLRequest class I was getting those messages too, and I though that they were the reason why I wasn't getting the serialized object I wanted from the request. Anyway, I was wrong, I just forgot to define some attributes in my POJO's, so please make sure your POJO's are well defined too.

A quick note to itsalif.. This class works very well, thanks for sharing!

Hi,
how can I send xml data using volley?

How to send xml request in volley as mentioned in above picture ?

Hello ,
I have following response

<APIGetCitiesResponse xmlns="http://tempuri.org/">
    <APIGetCitiesResult xmlns:a="http://schemas.datacontract.org/2004/07/CRS2011AgentApi" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
        <a:CityPair>
            <a:FromCityID>1</a:FromCityID>
            <a:FromCityName>Ahmedabad</a:FromCityName>
            <a:ToCityID>10</a:ToCityID>
            <a:ToCityName>Amreli</a:ToCityName>
        </a:CityPair>
        <a:CityPair>
            <a:FromCityID>1</a:FromCityID>
            <a:FromCityName>Ahmedabad</a:FromCityName>
            <a:ToCityID>57</a:ToCityID>
            <a:ToCityName>Ankleshwar</a:ToCityName>
        </a:CityPair>
</APIGetCitiesResult>
</APIGetCitiesResponse>

How to handle it ??

Can anybody help me out??.. its urgent : (

how to send POST request with XML parameter? TIA