xml解析

解析Res下xml文件中的文件msg.xml代码如下：

<?xml version="1.0" encoding="utf-8"?>
<msgs>
    <msg>
<title>Tatata</title>        
<content>CaCACA</content>
    </msg>
    <msg>
     <title>TCTCTC</title>   
     <content>你们好</content>
    </msg>
</msgs>

第二步：MainActivity.java中的代码如下:

public class MainActivity extends ListActivity {
private SimpleAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
List<Map<String,String>> data=parseXml(R.xml.msg);
adapter = new SimpleAdapter(this,
data, 
android.R.layout.simple_list_item_2,
new String[]{"title","content"},
new int[]{android.R.id.text1,android.R.id.text2});

setListAdapter(adapter);
}

private List<Map<String, String>> parseXml(int msg){
XmlResourceParser xpp = getResources().getXml(msg);
List<Map<String,String>> list=null;
Map<String,String> map=null;
try {
int event = xpp.getEventType();
do {
if(event==xpp.START_DOCUMENT){
list=new ArrayList<Map<String,String>>();
}else if(event==xpp.START_TAG){
map=processStartTag(xpp,map);
}else if(event==xpp.END_TAG&&"msg".equals(xpp.getName())){
map=processEndTag(list,map);
}
event=xpp.next();
} while (event!=xpp.END_DOCUMENT);
} catch (Exception e) {
e.printStackTrace();
}
return list;
}

private Map<String, String> processStartTag(XmlResourceParser xpp,
Map<String, String> map) throws Exception, Exception {
if("msg".equals(xpp.getName())){
map=new HashMap<String,String>();
}else if("title".equals(xpp.getName())){
map.put(xpp.getName(),xpp.nextText());

}else if("content".equals(xpp.getName())){
map.put(xpp.getName(),xpp.nextText());
}
return map;
}

private Map<String, String> processEndTag(List<Map<String, String>> list,
Map<String, String> map) {
list.add(map);
map=null;
return map;
}
}