Parsing Xml From Web

I'm developing an Android app, I would read an XML file from web but it doesn't work. I'm new on Android and I don't know why it doesn't work. This is my code, could someone help m

Solution 1:

First of all, you can not access internet locations without an AsyncTask. You can not do that on the main thread. Google it. Secondly, xpp.next() should have been placed inside the loop. Thirdly, @Kamuy's solution works too but in the same scenario as below.

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    newWebService() {

        @OverrideprotectedObjectdoInBackground(Object... params) {
            try {
                List<String> arr = newArrayList<String>();

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

                URL input = newURL("http://whatdowedo.altervista.org/griffith_list.xml");
                xpp.setInput(input.openStream(), null);
                //
                int eventType = xpp.getEventType();
                String currentTag = null;
                //String title = null;
                while (eventType != XmlPullParser.END_DOCUMENT) {
                    if (eventType == XmlPullParser.START_TAG) {
                        currentTag = xpp.getName();
                    } elseif (eventType == XmlPullParser.TEXT) {
                        if ("title".equals(currentTag)) {
                            title = xpp.getText().trim();
                            if(title.length()>0) {
                                arr.add(title);
                                System.out.println(title);
                            }
                        }
                    }
                    eventType = xpp.next();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            returnnull;
        }
    }.execute();
}

abstractclassWebServiceextendsAsyncTask<Object, Void, Object> {

    publicWebService() {
        super();
    }

    @OverrideprotectedvoidonPreExecute() {

    }

    @OverrideprotectedabstractObjectdoInBackground(Object... params);

    @OverrideprotectedvoidonPostExecute(Object result) {
    }

}

Replace the String array with your FilmList and that should be all. Just say thanks.

Solution 2:

Example:

try {
        URL url= newURL(/*your xml url*/);
        URLConnectionconn= url.openConnection();

        DocumentBuilderFactoryfactory= DocumentBuilderFactory.newInstance();
        DocumentBuilderbuilder= factory.newDocumentBuilder();
        Documentdoc= builder.parse(conn.getInputStream());

        NodeListnodes= doc.getElementsByTagName(/*tag from xml file*/);
        for (inti=0; i < nodes.getLength(); i++) {
            Elementelement= (Element) nodes.item(i);
            NodeListtitle= element.getElementsByTagName(/*item within the tag*/);
            Elementline= (Element) title.item(0);
            phoneNumberList.add(line.getTextContent());
        }
    }
    catch (Exception e) {
        e.printStackTrace();
    }

In my example, my XML file looks a little like:

<numbers><phone><stringname = "phonenumber1">555-555-5555</string></phone><phone><stringname = "phonenumber2">555-555-5555</string></phone>

and I would replace /tag from xml file/ with "phone" and /item within the tag/ with "string".