org.xmlpull.v1.XmlPullParserException: parser must be on START_TAG or TEXT to read text

Hi all, I’m glad to join this community.

I’m developing a multi-user chat tool for Agile Planning and I’m using Smack 3.1

My problem is the follow: when I try to send this packet extension:

<backlog xmlns='http://cdg.di.uniba.it/xcore/jabber'>
    <story>
        <story-name>Name_content</story-name>
        <description>Description_content</description>
        <priority>HIGH</priority>
        <estimate>UNKNOW</estimate>
    </story>
</backlog>

I get the following exception:

org.xmlpull.v1.XmlPullParserException: parser must be on START_TAG or TEXT to read text (position: START_TAG seen ...og xmlns="http://cdg.di.uniba.it/xcore/jabber"><story><story-name>... @1:2169)     at org.xmlpull.mxp1.MXParser.nextText(MXParser.java:1071)
    at org.jivesoftware.smack.util.PacketParserUtils.parseWithIntrospection(PacketParserUtils.java:435)
    at org.jivesoftware.smack.util.PacketParserUtils.parsePacketExtension(PacketParserUtils.java:381)
    at org.jivesoftware.smack.util.PacketParserUtils.parseMessage(PacketParserUtils.java:107)
    at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:272)
    at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:44)
    at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:76)

After a number of proof, it seems that there is a problem in the xml namespace. If i remove the : (colon) from xml namespace I don’t get the exception. I don’t if it does matter, but I don’t think that is the only solution.

This is the toXML method implementation of the PacketExtension:

@Override
    public String toXML() {
        String xml = String.format("<%s xmlns=\"%s\">" , "backlog", "http://cdg.di.uniba.it/xcore/jabber");
        for(int i=0; i < backlog.getUserStories().length; i++){
            SimpleUserStory story = (SimpleUserStory) backlog.getUserStories()[i];
            xml+=String.format("<%s>", "story");
            xml+=String.format("<%s>%s</%s>", "name",StringUtils.escapeForXML(story.getName()),"name" );
            xml+=String.format("<%s>%s</%s>", "description", StringUtils.escapeForXML(story.getDescription()), "description");
            xml+=String.format("<%s>%s</%s>", "priority", StringUtils.escapeForXML(story.getPriority().toString()), "priority");
            xml+=String.format("<%s>%s</%s>", "estimate", StringUtils.escapeForXML(story.getEstimate().toString()), "estimate");
            xml+=String.format("</%s>", "story");
        }
        xml += String.format("</%s>", "backlog");
        return xml;
    }

I will appreciate any kind of feedback,

Alessandro.