XmlPullParser

I have this XML:

<menu>
    <day name="monday">
        <meal name="BREAKFAST">
            <counter name="Bread">
               <dish>
                   <name>Plain Bagel</name>
               </dish>
            <counter/>
        <meal/>
    <day/>
    <day name="tuesday">
        <meal name="LUNCH">
            <counter name="Other">
               <dish>
                   <name>Cheese Bagel</name>
               </dish>
            <counter/>
        <meal/>
    <day/>
<menu/>

Now here is what I am trying to do, if the day tag's attribute is equal to monday. And then meals tag attribute is equal to BREAKFAST, then I want to get the counter's attribute. "Bread".

I have set up xml pull parser, but I am struggling getting this value. Here is what I have tried, I now I see that it can't and won't work... So any help on how I could set it up to do this would be great.

while (eventType != XmlResourceParser.END_DOCUMENT) {
        String tagName = xmlData.getName();

        switch (eventType) {
            case XmlResourceParser.START_TAG:
                if (tagName.equalsIgnoreCase("day")) {
                    if (xmlData.getAttributeValue(null, "name").equalsIgnoreCase(day)) {
                        if (tagName.equalsIgnoreCase("meal")) {
                            mealArray.add(xmlData.getAttributeValue(null, "name"));
                            Log.i(TAG, xmlData.getAttributeValue(null, "name"));
                        }
                    }


                }
                break;
            case XmlResourceParser.TEXT:
                break;
            case XmlPullParser.END_TAG:

                break;
        }
        eventType = xmlData.next();
    }

How to Pars student XML in Android using XMLPullParser?

Android XMLPullParser Example. Below is a simple example that parses student data present in xml format using XMLPullParser. 1. Create a new android project with package name com.androidxmlparser. 2. Create a folder raw under res. Add a file student.xml inside res/raw with following xml data.

What is the use of XML pull parser?

The XMLPullParser is a simple and efficient parser method to parse the XML data when compared to other parser methods such as DOM Parser and SAX Parser. The XMLPullParser has a method next () that provides access to high-level parsing events.

What is the best event-based XML parser in Java?

The xml.sax package offers a decent event-based XML parser interface modeled after the original Java API. It’s somewhat limited compared to the DOM but should be enough to implement a basic XML streaming push parser without resorting to third-party libraries.

How do I parse XML namespaces?

If you want to parse XML namespaces, then you’ll need to create and configure the SAX parser yourself with a bit of boilerplate code and also implement slightly different callbacks: These callbacks receive additional parameters about the element’s namespace.

You would need to add logic for parsing nested tags:

A very simple example to help you move ahead:

I parsed this String:

<menu><day name=\"monday\"><meal name=\"BREAKFAST\"><meal/><day/></menu>

Code:

try {
    factory = XmlPullParserFactory.newInstance();
    factory.setNamespaceAware(true);
    XmlPullParser xpp = factory.newPullParser();

    xpp.setInput(new StringReader("<menu><day name=\"monday\"><meal name=\"BREAKFAST\"><meal/><day/></menu>"));
    int eventType = xpp.getEventType();
    while (eventType != XmlResourceParser.END_DOCUMENT) {
        String tagName = xpp.getName();

        switch (eventType) {
            case XmlResourceParser.START_TAG:
                if (tagName.equalsIgnoreCase("day")) {
                    if (xpp.getAttributeValue(null, "name").equalsIgnoreCase("MONDAY")) {
                        int eventType2 = xpp.next();
                        while (eventType2 != XmlResourceParser.END_DOCUMENT) {
                            String tagName2 = xpp.getName();
                            switch (eventType2) {
                            case XmlResourceParser.START_TAG:
                                if (tagName2.equalsIgnoreCase("meal")) {
                                    Log.i("tag", "meal: " + xpp.getAttributeValue(null, "name"));
                                }
                                break;
                            case XmlResourceParser.TEXT:
                                break;
                            case XmlPullParser.END_TAG:
                                break;
                            }
                            eventType2 = xpp.next();
                        }
                    }
                }
            break;
            case XmlResourceParser.TEXT:
            break;
            case XmlPullParser.END_TAG:
            break;
        }
        eventType = xpp.next();
    }

} catch (XmlPullParserException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} catch (Exception e) {
    e.printStackTrace();
}

You see the difference, right?

I added this, basically, just after getting the day what I wanted. (In my case, hard coded String "Monday".)

int eventType2 = xpp.next();

And based upon that eventType2, retrieved tagName2 which would be for "meal"

A better example to help you write your logic in a nice manner.

Hope this helps.

XmlPullParser - Parse nested tag

Tags:

java

arrays

android

android-xmlpullparser

iqueqiorio

People also ask

1 Answers

MysticMagicϡ

Recent Activity

Donate For Us