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POFetching Data From Web Server using Sax Parsing
 

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  1. POFetching Data From Web Server using Sax Parsing
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    <h2>I am fetching data from Web server using SAX parsing method all the data is shown in LogCat but not shown in my emulator</h2> <pre><code>@SuppressLint("NewApi") public class IotdHandler extends DefaultHandler { private String url = "http://www.nasa.gov/rss/dyn/image_of_the_day.rss"; private boolean inUrl = false; private boolean inTitle = false; private boolean inDescription = false; private boolean inItem = false; private boolean inDate = false; private static Bitmap image = null; private String imageUrl=null; private static String title = null; private static StringBuffer description = new StringBuffer(); private static String date = null; public void processFeed() { try { //This part is added to allow the network connection on a main GUI thread... StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser parser = factory.newSAXParser(); XMLReader reader = parser.getXMLReader(); reader.setContentHandler(this); URL urlObj = new URL(url); InputStream inputStream = urlObj.openConnection().getInputStream(); reader.parse(new InputSource(inputStream)); } catch (Exception e) { e.printStackTrace(); System.out.println(new String("Got Exception General")); } } private Bitmap getBitmap(String url) { try { System.out.println(url); HttpURLConnection connection = (HttpURLConnection)new URL(url).openConnection(); connection.setDoInput(true); connection.connect(); InputStream input = connection.getInputStream(); Bitmap bitmap = BitmapFactory.decodeStream(input); input.close(); return bitmap; } catch (IOException ioe) { System.out.println(new String("IOException in reading Image")); return null; } catch (Exception ioe) { System.out.println(new String("IOException GENERAL")); return null; } } public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { if (localName.equals("enclosure")) { System.out.println(new String("characters Image")); imageUrl = attributes.putValue("","url"); System.out.println(imageUrl); inUrl = true; } else { inUrl = false; } if (localName.startsWith("item")) { inItem = true; } else if (inItem) { if (localName.equals("title")) { inTitle = true; } else { inTitle = false; } if (localName.equals("description")) { inDescription = true; } else { inDescription = false; } if (localName.equals("pubDate")) { inDate = true; } else { inDate = false; } } } public void characters(char ch[], int start, int length) { System.out.println(new String("characters")); String chars = new String(ch).substring(start, start + length); System.out.println(chars); if (inUrl &amp;&amp; image == null) { System.out.println(new String("IMAGE")); System.out.println(imageUrl); image = getBitmap(imageUrl); } if (inTitle &amp;&amp; title == null) { System.out.println(new String("TITLE")); title = chars; } if (inDescription) { description.append(chars); } if (inDate &amp;&amp; date == null) { date = chars; } } public static Bitmap getImage() { return image; } public static String getTitle() { return title; } public static StringBuffer getDescription() { return description; } public static String getDate() { return date; } } </code></pre> <hr> <p>This is my MainActivity class I am trying to fetch the data from nasa rss feed all the data is shown in the logcat but not displayed in the emulator</p> <pre><code>public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); IotdHandler handler = new IotdHandler(); //create handler handler.processFeed(); //start parsing resetDisplay(IotdHandler.getTitle(), IotdHandler.getDate(), IotdHandler.getImage(), IotdHandler.getDescription()); } private void resetDisplay(String title, String date, Bitmap image, StringBuffer description) { TextView titleView = (TextView)findViewById(R.id.imageTitle); titleView.setText(title); TextView dateView = (TextView)findViewById(R.id.imageDate); dateView.setText(date); ImageView imageView = (ImageView)findViewById(R.id.imageDisplay); imageView.setImageBitmap(image); TextView descriptionView = (TextView)findViewById(R.id.imageDescription); descriptionView.setText(description); } } </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USIllusionist
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COwhy dont you create a class with the properties and then receive it as a return type ? instead of using static references in code ?
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      1. POFetching Data From Web Server using Sax Parsing
      1. USRat-a-tat-a-tat Ratatouille
    2. COalso try debugging it in order to knw where things are going wrong
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      1. POFetching Data From Web Server using Sax Parsing
      1. USRat-a-tat-a-tat Ratatouille
    3. COI am a beginner Can you explain how can i create the class with properties and receive it as a return type
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      1. POFetching Data From Web Server using Sax Parsing
      1. USIllusionist
 

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