解析来自webURL的特定XML数据 - Android

Question

我只想解析一个特定的River数据。 来自这个网站：http://www.arso.gov.si/xml/vode/hidro_podatki_zadnji.xml

我的代码摘录了所有里弗斯：

ParseApplication.java;

public class ParseApplication {

    private String xmlData; // XML file we are processing
    private ArrayList<Application> applications;

    public ParseApplication(String xmlData) {
        this.xmlData = xmlData;
        this.applications = new ArrayList<Application>();
    }

    public ArrayList<Application> getApplications() {
        return applications;
    }

    public boolean process()
    {
        boolean status = true;
        Application currentRecord = null;
        boolean inEntry = false;
        String textValue = "";

        try {
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            factory.setNamespaceAware(true);
            XmlPullParser parser = factory.newPullParser();
            parser.setInput(new StringReader(this.xmlData));
            int eventType = parser.getEventType();

            while(eventType != XmlPullParser.END_DOCUMENT) {
                String tagName = parser.getName();
                switch (eventType) {
                    case XmlPullParser.START_TAG:
                        Log.d("ParseApplications", "Starting tag for " + tagName);
                        if (tagName.equalsIgnoreCase("postaja")) {
                            Log.d("ParseApplication", "Create application item");
                            inEntry = true;
                            currentRecord = new Application();
                        }
                        break;

                    case XmlPullParser.TEXT:
                        textValue = parser.getText(); // data itself, used in End_Tag
                        break;

                    case XmlPullParser.END_TAG:
                        Log.d("ParseApplication", "Ending tag for " + tagName);

                        if (inEntry) {
                            if (tagName.equalsIgnoreCase("postaja")) {
                                // Save the record and set entry to false
                                Log.d("ParseApplication", "Store Application With Name " + currentRecord.getReka());
                                this.applications.add(currentRecord);
                                inEntry = false;
                            } else if (tagName.equalsIgnoreCase("reka")) {
                                currentRecord.setReka(textValue); // TextValue already updated
                            } else if (tagName.equalsIgnoreCase("pretok")) {
                                currentRecord.setPretok(textValue);
                            } else  if (tagName.equalsIgnoreCase("datum")) {
                                currentRecord.setDatum(textValue);
                            }
                        }

                        break;

                    default:

                        break;
                }

                eventType = parser.next();
            }

        } catch(Exception e) {
            status = false;
            e.printStackTrace();
        }
        return status;
    }
}

和

application.java

public class Application {

    private String reka;
    private String pretok;
    private String datum;

    public String getReka() {
        return reka;
    }

    public void setReka(String reka) {
        this.reka = reka;
    }

    public String getPretok() {
        return pretok;
    }

    public void setPretok(String pretok) {
        this.pretok = pretok;
    }

    public String getDatum() {
        return datum;
    }

    public void setDatum(String datum) {
        this.datum = datum;
    }

    @Override
    public String toString() {
        return "Reka: " + this.getReka() + "\n" +
                "Pretok: " + this.getPretok() + " m3\n" +
                "Datum: " + this.getDatum();
    }
}

如何仅解析一个特定的XML River数据？