Android初学笔记——xml文件的读写

public void writeXML(){
        File file =new File(this.getFilesDir(), "test.xml");
        XmlSerializer s=Xml.newSerializer();
        try {
            FileOutputStream fos = new FileOutputStream(file);
            s.setOutput(fos, "utf-8");
            s.startDocument("utf-8", null);
            s.startTag(null, "persons");
            for(int i=0;i<10;i++){
                s.startTag(null, "p");
                s.startTag(null, "name");
                s.text("啊"+String.valueOf(i));
                s.endTag(null, "name");
                s.startTag(null, "age");
                s.text(String.valueOf(10+i));
                s.endTag(null, "age");
                s.endTag(null, "p");
            }
            s.endTag(null, "persons");
            s.endDocument();
            fos.flush();
            fos.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

public List<Person> readXML(){
        list = null;
        Person p=null;
        File file =new File(this.getFilesDir(), "test.xml");
        XmlPullParser parser=Xml.newPullParser();
        try {
            FileInputStream fis=new FileInputStream(file);
            parser.setInput(fis, "utf-8");
            int eventType=parser.getEventType();
            
            while(eventType!=XmlPullParser.END_DOCUMENT){
                String tagName=parser.getName();
                switch (eventType) {
                case XmlPullParser.START_TAG:
                    if("persons".equals(tagName)){
                        list=new ArrayList<Person>();
                    }else if("p".equals(tagName)){
                        p=new Person();
                    }else if("name".equals(tagName)){
                        p.setName(parser.nextText());
                    }else if("age".equals(tagName)){
                        p.setAge(Integer.parseInt(parser.nextText()));
                    }
                    break;
                case XmlPullParser.END_TAG:
                    if("p".equals(tagName)){
                        list.add(p);
                    }
                    break;
                default:
                    break;
                }
                eventType=parser.next();
            }
            fis.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return list;
    }