使用PULL方式解析XML资源文件下面的xml文件

public class MainActivity extends Activity {
    private Button btn = null;
    private List<Map<String,String>> list = null;
    private XmlResourceParser xrp = null;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        btn = (Button)findViewById(R.id.btn);
        
        list = new ArrayList<Map<String,String>>();
        
        xrp = this.getResources().getXml(R.xml.students);
        
        btn.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View arg0) {
                Map<String,String> map = null;
                String tag = "";
                try {
                    while(xrp.getEventType() != XmlResourceParser.END_DOCUMENT){
                        switch(xrp.getEventType()){
                        case XmlResourceParser.START_TAG:
                            tag = xrp.getName();
                            if(tag.equalsIgnoreCase("student")){
                                map = new HashMap<String,String>();
                            }else if(map != null){
                                if(tag.equalsIgnoreCase("id")){
                                    map.put("id", xrp.nextText());
                                }else if(tag.equalsIgnoreCase("name")){
                                    map.put("name", xrp.nextText());
                                }        
                            }
                            break;
                        case XmlResourceParser.END_TAG:
                            if(xrp.getName().equalsIgnoreCase("student") && map!=null){
                                list.add(map);
                                map = null;
                            }
                            break;
                        }
                        xrp.next();
                    }
                }catch (XmlPullParserException e) {
                    e.printStackTrace();
                }catch(IOException e){
                    e.printStackTrace();
                }
                
                for(int i=0; i<list.size(); i++){
                    Log.d("+id+", list.get(i).get("id"));
                }
            }
        });
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<students>
    <student>
        <id>1</id>
        <name>张三</name>
    </student>
    <student>
        <id>2</id>
        <name>李四</name>
    </student>
    <student>
        <id>3</id>
        <name>王五</name>
    </student>
</students>