i am working with android and using xmlpullparser in android to parse an xml document that is like:
<spaces>
<space>
<name></name>
<desc></desc>
<songs>
<song>
<name></name>
<thumb></thumb>
</song>
<song>
<name></name>
<thumb></thumb>
</song>
</songs>
</space>
</spaces>
am using this:
public List<Space> parse(String xmlString) {
List<Space> Spaces = null;
XmlPullParser parser = Xml.newPullParser();
try {
parser.setInput(new StringReader(xmlString));
int eventType = parser.getEventType();
Space currentSpace = null;
boolean done = false;
while (eventType != XmlPullParser.END_DOCUMENT && !done) {
String name = null;
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
Spaces = new ArrayList<Space>();
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("space")) {
currentSpace = new Space();
System.out.println("space");
} else if (currentSpace != null) {
if (name.equalsIgnoreCase("name")) {
currentSpace.setName(parser.nextText());
System.out.println(":::"+currentSpace.getName());
} else if (name.equalsIgnoreCase("id")) {
if (currentSpace.getId() == null) {
currentSpace.setId(parser.nextText());
}
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("space") && currentSpace != null) {
Spaces.add(currentSpace);
} else if (name.equalsIgnoreCase("spaces")) {
done = true;
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
Log.e("Projects List", e.getMessage(), e);
throw new RuntimeException(e);
}
return Spaces;
}
My problem is i want only <name></name> which is in <space> not within <song> and using above code am getting both.
i looked Parsing XML XmlPullParser android but dint get my solution.
Please Reply. Thanks.
Answer
while parsing START_TAG, when you parse <space> tag, take one counter variable and assign it 1 and then whenever you get <name> tag, at that increment it by 1.
Now, while parsing <name> tag, just check whether <name> tag comes for the 1st time, if it is then parse the desired value.
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("space")) {
cnt=1;
currentSpace = new Space();
System.out.println("space");
} else if (currentSpace != null) {
if (name.equalsIgnoreCase("name"))
{
currentSpace.setName(parser.nextText());
if(cnt==1)
{
// you have <name> from <space>
}
System.out.println(":::"+currentSpace.getName());
cnt++;
} else if (name.equalsIgnoreCase("id")) {
if (currentSpace.getId() == null) {
currentSpace.setId(parser.nextText());
}
}
}
break;