解析服务器返回的输入流

public class UpdateInfoParser {

/**
* 解析服务器返回的输入流
*
* @param is
* @return 更新信息 null解析失败
*/
public static UpdateInfo getUpdateInfos(InputStream is) {
try {
XmlPullParser parser = Xml.newPullParser();
parser.setInput(is, "UTF-8");
int type = parser.getEventType();
UpdateInfo info = new UpdateInfo();
while (type != XmlPullParser.END_DOCUMENT) {

switch (type) {
case XmlPullParser.START_TAG:
if("version".equals(parser.getName())){
String version = parser.nextText();
info.setVersion(version);
}else if("description".equals(parser.getName())){
String description = parser.nextText();
info.setDescription(description);
}else if("path".equals(parser.getName())){
String path = parser.nextText();
info.setApkurl(path);
}
break;
}
type = parser.next();
}
return info;
} catch (Exception e) {
e.printStackTrace();
return null;
}

}
}