XmlPullParserException when calling nextTag() for the first time in Android application

Question

I'm writing an Android application that parses an XML feed using XmlPullParser.

This is the XML I'm attempting to parse:

http://www.corvallistransit.com/rtt/public/utility/file.aspx?contenttype=SQLXML&Name=RoutePattern.rxml

This is the code where it's blowing up:

public List parseRouteInfo(InputStream in) throws XmlPullParserException, IOException {
    try {
        XmlPullParser parser = Xml.newPullParser();
        parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
        parser.setInput(in, null);

        // This is the line
        parser.nextTag();

        parser.require(XmlPullParser.START_TAG, ns, "RoutePattern");
        return readPatterns(parser);
    } finally {
        in.close();
    }
}

And this is the exception thrown:

org.xmlpull.v1.XmlPullParserException: unexpected type (position:END_DOCUMENT null@1:1 in java.io.InputStreamReader@416d80a8) 

To have the system accept the URL, I'm changing the & character in the URL parameter to be & but aside from that I'm following the Android XML Parsing Tutorial as closely as possible.

I understand why an exception is thrown (no START_TAG or END_TAG found), but I can't figure out why the parser is at END_DOCUMENT.

Answer 1

This was the culprit:

To have the system accept the URL, I'm changing the & character in the URL parameter to be &amp;

For some reason the system wasn't accepting a URL without that change, but it seems to be fine now.