import org.jivesoftware.smackx.packet.DefaultPrivateData; //导入依赖的package包/类
public IQ parseIQ(XmlPullParser parser) throws Exception {
    PrivateData privateData = null;
    boolean done = false;
    while (!done) {
        int eventType = parser.next();
        if (eventType == XmlPullParser.START_TAG) {
            String elementName = parser.getName();
            String namespace = parser.getNamespace();
            // See if any objects are registered to handle this private data type.
            PrivateDataProvider provider = getPrivateDataProvider(elementName, namespace);
            // If there is a registered provider, use it.
            if (provider != null) {
                privateData = provider.parsePrivateData(parser);
            }
            // Otherwise, use a DefaultPrivateData instance to store the private data.
            else {
                DefaultPrivateData data = new DefaultPrivateData(elementName, namespace);
                boolean finished = false;
                while (!finished) {
                    int event = parser.next();
                    if (event == XmlPullParser.START_TAG) {
                        String name = parser.getName();
                        // If an empty element, set the value with the empty string.
                        if (parser.isEmptyElementTag()) {
                            data.setValue(name,"");
                        }
                        // Otherwise, get the the element text.
                        else {
                            event = parser.next();
                            if (event == XmlPullParser.TEXT) {
                                String value = parser.getText();
                                data.setValue(name, value);
                            }
                        }
                    }
                    else if (event == XmlPullParser.END_TAG) {
                        if (parser.getName().equals(elementName)) {
                            finished = true;
                        }
                    }
                }
                privateData = data;
            }
        }
        else if (eventType == XmlPullParser.END_TAG) {
            if (parser.getName().equals("query")) {
                done = true;
            }
        }
    }
    return new PrivateDataResult(privateData);
}
 

import org.jivesoftware.smackx.packet.DefaultPrivateData; //导入依赖的package包/类
public IQ parseIQ(XmlPullParser parser) throws Exception {
	PrivateData privateData = null;
	boolean done = false;
	while (!done) {
		int eventType = parser.next();
		if (eventType == XmlPullParser.START_TAG) {
			String elementName = parser.getName();
			String namespace = parser.getNamespace();
			// See if any objects are registered to handle this private
			// data type.
			PrivateDataProvider provider = getPrivateDataProvider(
					elementName, namespace);
			// If there is a registered provider, use it.
			if (provider != null) {
				privateData = provider.parsePrivateData(parser);
			}
			// Otherwise, use a DefaultPrivateData instance to store the
			// private data.
			else {
				DefaultPrivateData data = new DefaultPrivateData(
						elementName, namespace);
				boolean finished = false;
				while (!finished) {
					int event = parser.next();
					if (event == XmlPullParser.START_TAG) {
						String name = parser.getName();
						// If an empty element, set the value with the
						// empty string.
						if (parser.isEmptyElementTag()) {
							data.setValue(name, "");
						}
						// Otherwise, get the the element text.
						else {
							event = parser.next();
							if (event == XmlPullParser.TEXT) {
								String value = parser.getText();
								data.setValue(name, value);
							}
						}
					} else if (event == XmlPullParser.END_TAG) {
						if (parser.getName().equals(elementName)) {
							finished = true;
						}
					}
				}
				privateData = data;
			}
		} else if (eventType == XmlPullParser.END_TAG) {
			if (parser.getName().equals("query")) {
				done = true;
			}
		}
	}
	return new PrivateDataResult(privateData);
}