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package dk.thoerup.traininfo.provider; |
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import java.io.ByteArrayInputStream; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.xml.parsers.DocumentBuilder; |
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import javax.xml.parsers.DocumentBuilderFactory; |
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import javax.xml.parsers.ParserConfigurationException; |
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import org.w3c.dom.Document; |
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import org.w3c.dom.Node; |
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import org.w3c.dom.NodeList; |
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import org.xml.sax.SAXException; |
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import android.location.Location; |
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import android.util.Log; |
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import dk.thoerup.traininfo.StationBean; |
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import dk.thoerup.traininfo.util.DownloadUtil; |
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public class XmlStationProvider implements StationProvider { |
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List<StationBean> stations = new ArrayList<StationBean>(); |
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@Override |
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public List<StationBean> getStations() { |
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return stations; |
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} |
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@Override |
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public void lookupStations(Location location) { |
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String url = "http://app.t-hoerup.dk/TrainInfoService/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude(); |
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Log.i("url", url); |
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try { |
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stations.clear(); |
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String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1"); |
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Document doc = parseXML(xml); |
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Node rootNode = doc.getDocumentElement(); // stations |
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NodeList stationList = rootNode.getChildNodes(); |
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for (int i=0; i<stationList.getLength(); i++) { |
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Node stationNode = stationList.item(i); |
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if (! stationNode.getNodeName().equals("station")) |
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continue; |
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StationBean station = new StationBean(); |
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NodeList stationElements = stationNode.getChildNodes(); |
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for (int j=0; j<stationElements.getLength(); j++) { |
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Node current = stationElements.item(j); |
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String content = null; |
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if (current.getFirstChild() != null) |
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content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value |
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String nodeName = current.getNodeName(); |
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if (nodeName.equals("id")) |
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station.setId( Integer.parseInt(content)); |
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if (nodeName.equals("name")) |
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station.setName(content); |
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if (nodeName.equals("latitude")) |
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station.setLatitude( Double.parseDouble(content) ); |
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if (nodeName.equals("longitude")) |
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station.setLongitude( Double.parseDouble(content) ); |
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if (nodeName.equals("stationcode")) |
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station.setCode(content); |
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if (nodeName.equals("calcdist")) |
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station.setDistance( (int) Double.parseDouble(content) ); |
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} |
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stations.add(station); |
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} |
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} catch (Exception e) { |
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Log.e("XmlStationProvider", "lookupStations: ", e); |
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} |
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} |
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public Document parseXML(String str) throws SAXException, IOException, ParserConfigurationException |
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{ |
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DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); |
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return builder.parse( new ByteArrayInputStream(str.getBytes()) ); |
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} |
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} |
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