Android Open Source - NASAImageOfTheDay Iotd Handler

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License

The source code is released under:

MIT License

Java Source Code

package com.example.parser;
/* w  w w .  ja v  a 2s.  com*/
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

public class IotdHandler extends DefaultHandler {


  private static final String TAG = IotdHandler.class.getSimpleName();

  private static final String ITEM = "item";
  private static final String TITLE = "title";
  private static final String PUBDATE = "pubDate";
  private static final String IMAGE = "enclosure";
  private static final String IMAGEURL= "url";
  
  private static final String DESCRIPTION = "description" ;
  
  
  private String url;
  private boolean inTitle = false;
  private boolean inDescription = false;
  private boolean inItem = false;
  private boolean inDate = false;
  
  private ArrayList<ApodFeedItem> feedItemList = null;
  private ApodFeedItem feedItem = null;
  
  private StringBuffer title = new StringBuffer();
  private StringBuffer description = new StringBuffer();
  private StringBuffer date = new StringBuffer();
  private String imgUrl = null;
  

  public IotdHandler(String murl) {
    url = murl;
  }
  
  public IotdHandler() {

  }

  public ArrayList<ApodFeedItem> getFeedItemList() {
    return feedItemList;
  }
  public StringBuffer getTitle() {
    return title;
  }
  public void setTitle(StringBuffer title) {
    this.title = title;
  }
  public StringBuffer getDescription() {
    return description;
  }
  public void setDescription(StringBuffer description) {
    this.description = description;
  }
  public StringBuffer getDate() {
    return date;
  }
  public void setDate(StringBuffer date) {
    this.date = date;
  }
  public String getImgUrl() {
    return imgUrl;
  }
  public void setImgUrl(String imgUrl) {
    this.imgUrl = imgUrl;
  }
  
  public void processFeeds(){

    try {
      SAXParserFactory factory = SAXParserFactory.newInstance();
      SAXParser parser = factory.newSAXParser();
      XMLReader reader = parser.getXMLReader();
      reader.setContentHandler(this);
      InputStream inputStream = new URL(url).openStream();
      Log.d(TAG,inputStream.toString());
      reader.parse(new InputSource(inputStream));

    } catch (ParserConfigurationException e) {
      e.printStackTrace();
    } catch (SAXException e) {
      e.printStackTrace();
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  public Bitmap getBitmap(String url){
    HttpURLConnection connection;
    InputStream input;
    Bitmap bitmap;
    try {
      connection = (HttpURLConnection) new URL(url).openConnection();
      connection.setDoInput(true);
      connection.connect();
      input = connection.getInputStream();
      bitmap = BitmapFactory.decodeStream(input);
      input.close();
      return bitmap;

    } catch (MalformedURLException e) {
      e.printStackTrace();
      return null;
    } catch (IOException e) {
      e.printStackTrace();
      return null;
    }

  }

  public void startElement(String uri, String localName, String qName, Attributes attributes){

    if(localName.startsWith(ITEM)){
      inItem = true;
      feedItem = new ApodFeedItem();
      if(feedItemList == null){
        feedItemList = new ArrayList<ApodFeedItem>();
      }
    }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;
      }
      
      if(localName.equals(IMAGE)){
          imgUrl = attributes.getValue(IMAGEURL);
          feedItem.setImageUrl(imgUrl);
        Log.d("Rahool","ImageURI: "+imgUrl);
      }
    }
  }

  public void characters(char ch[],int start , int length){
    String chars = (new String(ch).substring(start, start + length));
    if(inTitle){
      feedItem.setTitle(new String(ch,start,length));
      inTitle = false;
    }
    if(inDescription){
//      feedItem.setDescription(new String(ch,start,length));
      feedItem.setDescription(chars);
      inDescription = false;
    }
    if(inDate){
      feedItem.setDate(new String(ch,start,length));
      inDate = false;
    }
  }
  
  @Override
  public void endElement(String uri, String localName, String qName) {
    if(qName.equals(TITLE)){
      inTitle = false;
    }
    
    if(qName.equals(DESCRIPTION)){
      inDescription = false;
    }
    
    if(qName.equals(PUBDATE)){
      inTitle = false;
    }
    
    if(qName.equals(ITEM)){
      feedItemList.add(feedItem);
      inItem = false;
    }
  }
}

Java Source Code List

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