Android开发之XML的创建和解析

public void click(View v) {
InputStream is = getClassLoader().getResourceAsStream("weather.xml");
//获取到XMLPullParse接口的对象
XmlPullParser xpp = Xml.newPullParser();
try {
//设置输出流及编码
xpp.setInput(is, "utf-8");
//获取到节点的类型，START_DOCUMENT=0，END_DOCUMENT=1，START_TAG=2，END_TAG=3，TEXT=4
int type = xpp.getEventType();
CityBean city = null;
//当前节点不是END_DOCUMENT的话，就一直循环遍历XML文件
while (type!=XmlPullParser.END_DOCUMENT) {
//使用switch判断type类型
switch (type) {
//type为2的情况下，进入START_TAG
case XmlPullParser.START_TAG:
//获取当前节点的名字是weather
if ("weather".equals(xpp.getName())) {
//city的集合
cityList=new ArrayList<>();
}else if ("city".equals(xpp.getName())) {
city = new CityBean();
}else if ("name".equals(xpp.getName())) {
String name = xpp.nextText();
city.setName(name);
}else if ("temp".equals(xpp.getName())) {
String temp = xpp.nextText();
city.setTemp(temp);
}else if ("pm".equals(xpp.getName())) {
String pm = xpp.nextText();
city.setPm(pm);
}
break;
case XmlPullParser.END_TAG:
if ("city".equals(xpp.getName())) {
cityList.add(city);
}
break;
default:
break;
}
//把解析的指针移动到下一个节点
type=xpp.next();
}
for (CityBean c1 : cityList) {
System.out.println(c1.toString());
}
} catch (Exception e) {
e.printStackTrace();
}
}

File file = new File(Environment.getExternalStorageDirectory(),"info3.xml");
XmlSerializer xml = Xml.newSerializer();
try {
FileOutputStream fos = new FileOutputStream(file);
xml.setOutput(fos, "utf-8");
xml.startDocument("utf-8", true);
xml.startTag(null, "message");
for (SmsBean smsBean : smsList) {
xml.startTag(null, "sms");
xml.startTag(null, "body");
xml.text(smsBean.getBody());
xml.endTag(null, "body");
xml.startTag(null, "address");
xml.text(smsBean.getAddress());
xml.endTag(null, "address");
xml.startTag(null, "date");
xml.text(smsBean.getDate());
xml.endTag(null, "date");
xml.startTag(null, "type");
xml.text(smsBean.getType());
xml.endTag(null, "type");
xml.endTag(null, "sms");
}
xml.endTag(null, "message");
xml.endDocument();
fos.close();
} catch (Exception e) {

e.printStackTrace();
}