Android - Parsing XML with XPath
- by Ruben Deig Ramos
First of all, thanks to all the people who's going to spend a little time on this question.
Second, sorry for my english (not my first language! :D).
Well, here is my problem.
I'm learning Android and I'm making an app which uses a XML file to store some info. I have no problem creating the file, but trying to read de XML tags with XPath (DOM, XMLPullParser, etc. only gave me problems) I've been able to read, at least, the first one.
Let's see the code.
Here is the XML file the app generates:
<dispositivo>
<id>111</id>
<nombre>Name</nombre>
<intervalo>300</intervalo>
</dispositivo>
And here is the function which reads the XML file:
private void leerXML() {
try {
XPathFactory factory=XPathFactory.newInstance();
XPath xPath=factory.newXPath();
// Introducimos XML en memoria
File xmlDocument = new File("/data/data/com.example.gps/files/devloc_cfg.xml");
InputSource inputSource = new InputSource(new FileInputStream(xmlDocument));
// Definimos expresiones para encontrar valor.
XPathExpression tag_id = xPath.compile("/dispositivo/id");
String valor_id = tag_id.evaluate(inputSource);
id=valor_id;
XPathExpression tag_nombre = xPath.compile("/dispositivo/nombre");
String valor_nombre = tag_nombre.evaluate(inputSource);
nombre=valor_nombre;
} catch (Exception e) {
e.printStackTrace();
}
}
The app gets correctly the id value and shows it on the screen ("id" and "nombre" variables are assigned to a TextView each one), but the "nombre" is not working.
What should I change? :)
Thanks for all your time and help. This site is quite helpful!
PD: I've been searching for a response on the whole site but didn't found any.
