XmlUtil.java

package com.codeest.geeknews.util;

import android.content.res.XmlResourceParser;
import android.support.v4.util.ArrayMap;

/**
 * Created by codeest on 16/12/30.
 */

public class XmlUtil {

    public static ArrayMap<String, ArrayMap<String,String>> parseNodes(XmlResourceParser xmlResourceParser) throws Exception{
            if (xmlResourceParser==null)
                return  null;
            ArrayMap<String, ArrayMap<String,String>> map = null;
            ArrayMap<String,String> nodeMap = null;
            int root=xmlResourceParser.getEventType();
            while (root!= XmlResourceParser.END_DOCUMENT){
                switch (root){
                    case XmlResourceParser.START_DOCUMENT:
                        map = new ArrayMap<>();
                        break;
                    case XmlResourceParser.START_TAG:
                        if("index".equals(xmlResourceParser.getName())){
                            String nodeName = xmlResourceParser.getAttributeValue(0);
                            nodeMap = new ArrayMap<>();
                            if (map != null) {
                                map.put(nodeName, nodeMap);
                            }
                        }
                        else if ("node".equals(xmlResourceParser.getName())){
                            String node = xmlResourceParser.getAttributeValue(0);
                            String nodeName = xmlResourceParser.nextText();
                            if (nodeMap != null) {
                                nodeMap.put(node, nodeName);
                            }
                        }
                        break;
                    case XmlResourceParser.END_TAG:
                        if("index".equals(xmlResourceParser.getName())){
                            nodeMap = null;
                        }
                        break;
                }
                root=xmlResourceParser.next();
            }
            return map;
        }
}