Created
August 27, 2016 01:18
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| package eu.mihin.sample; | |
| import android.app.Application; | |
| import android.os.AsyncTask; | |
| import android.util.Log; | |
| import org.xmlpull.v1.XmlPullParser; | |
| import org.xmlpull.v1.XmlPullParserException; | |
| import org.xmlpull.v1.XmlPullParserFactory; | |
| import java.io.BufferedInputStream; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.net.HttpURLConnection; | |
| import java.net.URL; | |
| public class SampleApplication extends Application { | |
| @Override | |
| public void onCreate() { | |
| super.onCreate(); | |
| new RatesLoaderTask().execute(); | |
| } | |
| public class RatesLoaderTask extends AsyncTask<Void, Void, Void> { | |
| @Override | |
| protected Void doInBackground(Void... params) { | |
| doWork(); | |
| return null; | |
| } | |
| private void doWork() { | |
| HttpURLConnection urlConnection = null; | |
| try { | |
| URL url = new URL("http://www.cbr.ru/scripts/XML_daily.asp"); | |
| urlConnection = (HttpURLConnection) url.openConnection(); | |
| InputStream in = new BufferedInputStream(urlConnection.getInputStream()); | |
| XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); | |
| factory.setNamespaceAware(true); | |
| XmlPullParser parser = factory.newPullParser(); | |
| parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false); | |
| parser.setInput(in, null); | |
| parser.nextTag(); | |
| parser.require(XmlPullParser.START_TAG, null, "ValCurs"); | |
| while (parser.next() != XmlPullParser.END_TAG) { | |
| if (parser.getEventType() != XmlPullParser.START_TAG) { | |
| continue; | |
| } | |
| String valuteID = parser.getAttributeValue(null, "ID"); | |
| if (valuteID.equals("R01270")) { | |
| Log.e("TEST", "INR exchange rate = " + parseExchangeRate(parser)); | |
| } else { | |
| skip(parser); | |
| } | |
| } | |
| } catch (XmlPullParserException | IOException e) { | |
| e.printStackTrace(); | |
| } finally { | |
| if (urlConnection != null) | |
| urlConnection.disconnect(); | |
| } | |
| } | |
| private String parseExchangeRate(XmlPullParser parser) throws XmlPullParserException, IOException { | |
| while (parser.next() != XmlPullParser.END_TAG) { | |
| if (parser.getEventType() != XmlPullParser.START_TAG) { | |
| continue; | |
| } | |
| String name = parser.getName(); | |
| if (name.equals("Value")) { | |
| return readNodeValue(parser); | |
| } else { | |
| skip(parser); | |
| } | |
| } | |
| throw new IllegalStateException("Can't find value"); | |
| } | |
| private void skip(XmlPullParser parser) throws XmlPullParserException, IOException { | |
| if (parser.getEventType() != XmlPullParser.START_TAG) { | |
| throw new IllegalStateException(); | |
| } | |
| int depth = 1; | |
| while (depth != 0) { | |
| switch (parser.next()) { | |
| case XmlPullParser.END_TAG: | |
| depth--; | |
| break; | |
| case XmlPullParser.START_TAG: | |
| depth++; | |
| break; | |
| } | |
| } | |
| } | |
| private String readNodeValue(XmlPullParser parser) throws IOException, XmlPullParserException { | |
| String result = ""; | |
| if (parser.next() == XmlPullParser.TEXT) { | |
| result = parser.getText(); | |
| parser.nextTag(); | |
| } | |
| return result; | |
| } | |
| } | |
| } |
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