SAX-parser doesn't retrieve image from rss feed

SAX-parser doesn't retrieve image from rss feed - android

I'm following a guid in Head First Android Development, and I can't seem to get this part right. The code is supposed to get a image with title and description from a Nasa RSS feed, but it does not retrieve the image. Any help would be awesome :)
package com.olshausen.nasadailyimage;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
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.os.Bundle;
import android.widget.ImageView;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.Menu;
import android.widget.TextView;
public class DailyImage extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_daily_image);
IotdHandler handler = new IotdHandler ();
handler.processFeed();
resetDisplay (handler.getTitle(), handler.getDate(), handler.getImage(), handler.getDescription());
}
public class IotdHandler extends DefaultHandler {
private String url = "http://www.nasa.gov/rss/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 Bitmap image = null;
private String title = null;
private StringBuffer description = new StringBuffer();
private String date = null;
public void processFeed() {
try {
SAXParserFactory factory =
SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
XMLReader reader = parser.getXMLReader();
reader.setContentHandler(this);
InputStream inputStream = new URL(url).openStream();
reader.parse(new InputSource(inputStream));
} catch (Exception e) { }
}
private Bitmap getBitmap(String url) {
try {
HttpURLConnection connection = (HttpURLConnection)new URL(url).openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap bilde = BitmapFactory.decodeStream(input);
input.close();
return bilde;
} catch (IOException ioe) { return null; }
}
public void startElement(String url, String localName, String qName, Attributes attributes) throws SAXException {
if (localName.endsWith(".jpg")) { 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) { String chars = new String(ch).substring(start, start + length);
if (inUrl && url == null) { image = getBitmap(chars); }
if (inTitle && title == null) { title = chars; }
if (inDescription) { description.append(chars); }
if (inDate && date == null) { date = chars; }
}
public Bitmap getImage() { return image; }
public String getTitle() { return title; }
public StringBuffer getDescription() { return description; }
public String getDate() { return date; }
}
private void resetDisplay (String title, String date, Bitmap image, StringBuffer description) {
TextView titleView = (TextView) findViewById (R.id.image_title);
titleView.setText(title);
TextView dateView = (TextView) findViewById(R.id.image_date);
dateView.setText(date);
ImageView imageView = (ImageView) findViewById (R.id.image_display);
imageView.setImageBitmap(image);
TextView descriptionView = (TextView) findViewById (R.id.image_description);
descriptionView.setText(description);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_daily_image, menu);
return true;
}
}
I must honestly say that I copied most of this code without checking it, the parser was "ready bake code", so its not really what is supposed to be tought in this chapter :)

Try using a framework instead - even the simplistic built-in framework is better than that horrible kludge you found.
This example uses the RootElement / Element and associated listeners from the android.sax package.
class NasaParser {
private String mTitle;
private String mDescription;
private String mDate;
private String mImageUrl;
public void parse(InputStream is) throws IOException, SAXException {
RootElement rss = new RootElement("rss");
Element channel = rss.requireChild("channel");
Element item = channel.requireChild("item");
item.setElementListener(new ElementListener() {
public void end() {
onItem(mTitle, mDescription, mDate, mImageUrl);
}
public void start(Attributes attributes) {
mTitle = mDescription = mDate = mImageUrl = null;
}
});
item.getChild("title").setEndTextElementListener(new EndTextElementListener() {
public void end(String body) {
mTitle = body;
}
});
item.getChild("description").setEndTextElementListener(new EndTextElementListener() {
public void end(String body) {
mDescription = body;
}
});
item.getChild("pubDate").setEndTextElementListener(new EndTextElementListener() {
public void end(String body) {
mDate = body;
}
});
item.getChild("enclosure").setStartElementListener(new StartElementListener() {
public void start(Attributes attributes) {
mImageUrl = attributes.getValue("", "url");
}
});
Xml.parse(is, Encoding.UTF_8, rss.getContentHandler());
}
public void onItem(String title, String description, String date, String imageUrl) {
// This is where you handle the item in the RSS channel, etc. etc.
// (Left as an exercise for the reader)
System.out.println("title=" + title);
System.out.println("description=" + description);
System.out.println("date=" + date);
// This needs to be downloaded for instance
System.out.println("imageUrl=" + imageUrl);
}
}

This Ready bake code has two problems
The Network connection is made from the main UI thread.()
How to fix android.os.NetworkOnMainThreadException?
The Image is not retrieved from the XML properly in the example
so just add one member variable for the imageUrl and access it by first reading enclosure and then url.
So the final code will be look like..
package com.Achiileus.nasadailyimageamazing;//your package name
import org.xml.sax.helpers.DefaultHandler;
import android.annotation.SuppressLint;
import android.graphics.*;
import android.os.StrictMode;
import javax.xml.parsers.*;
import org.xml.sax.*;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.HttpURLConnection;
import java.io.IOException;
#SuppressLint("NewApi")
public class IotdHandler extends DefaultHandler {
private String url = "http://www.nasa.gov/rss/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 Bitmap image = null;
private String imageUrl=null;
private String title = null;
private StringBuffer description = new StringBuffer();
private 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.getValue("","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 && image == null)
{
System.out.println(new String("IMAGE"));
System.out.println(imageUrl);
image = getBitmap(imageUrl);
}
if (inTitle && title == null) {
System.out.println(new String("TITLE"));
title = chars; }
if (inDescription) { description.append(chars); }
if (inDate && date == null) { date = chars; }
}
public Bitmap getImage() { return image; }
public String getTitle() { return title; }
public StringBuffer getDescription() { return description; }
public String getDate() { return date; }
}

Seems like your main issue is in your parse() method. You will never get the image by using this condition: if (localName.endsWith(".jpg")), that will never be true. Instead, you want to make sure you're inside an enclosure tag, and then you want to read the attributes so you get the url one. So first update your clause to be if (localName.endsWith("url")) { ... }. Then to get the actual URL attribute, you can check how to do that from this link.

package com.headfirstlabs.ch03.nasa.iotd;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
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.content.Context;
import android.util.Log;
public class IotdHandler extends DefaultHandler {
private static final String TAG = IotdHandler.class.getSimpleName();
private boolean inTitle = false;
private boolean inDescription = false;
private boolean inItem = false;
private boolean inDate = false;
private String url = null;
private StringBuffer title = new StringBuffer();
private StringBuffer description = new StringBuffer();
private String date = null;
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if (localName.equals("enclosure")) {
url = attributes.getValue("url");
}
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) {
String chars = (new String(ch).substring(start, start + length));
if (inTitle) {
title.append(chars);
}
if (inDescription) {
description.append(chars);
}
if (inDate && date == null) {
//Example: Tue, 21 Dec 2010 00:00:00 EST
String rawDate = chars;
try {
SimpleDateFormat parseFormat = new SimpleDateFormat("EEE, dd MMM yyyy
HH:mm:ss");
Date sourceDate = parseFormat.parse(rawDate);
SimpleDateFormat outputFormat = new SimpleDateFormat("EEE, dd MMM yyyy");
date = outputFormat.format(sourceDate);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public void processFeed(Context context, URL url) {
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(this);
xr.parse(new InputSource(url.openStream()));
} catch (IOException e) {
Log.e("", e.toString());
} catch (SAXException e) {
Log.e("", e.toString());
} catch (ParserConfigurationException e) {
Log.e("", e.toString());
}
}
public String getUrl() {
return url;
}
public String getTitle() {
return title.toString();
}
public String getDescription() {
return description.toString();
}
public String getDate() {
return date;
}
}

Related

java.io.IOException: Not Found While getting ClientAuthToken for Youtube Direct Upload videos from Android

I have been uploading video directly to youtube using API where i can take authToken for default accounts which has already linked with their device. Now i want to take authtoken for static username and password of youtube to do so.
i have done by using code of Vaibhav A. Jani thanks to him. but i got issue like java.io.IOException: Not Found While getting ClientAuthToken.
How to Resolve this issues ? or any other example and api to do
Thanks in Advance.
My Code Part is
YoutubeUploader.java
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Set;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore.Video;
import android.util.Log;
public class YoutubeUploader {
private static final String TAG = "YoutubeUploader";
// After creating project at http://www.appspot.com DEFAULT_YTD_DOMAIN == <Developers Console Project ID>.appspot.com [ You can find from Project -> Administration -> Application settings]
public static final String DEFAULT_YTD_DOMAIN = "developerconsolid.appspot.com";
// I used Google APIs Console Project Title as Domain name:
public static final String DEFAULT_YTD_DOMAIN_NAME = "Domain Name";
//From Google Developer Console from same project (Created by SHA1; project package)
//Example https://console.developers.google.com/project/apps~gtl-android-youtube-test/apiui/credential
public static final String DEVELOPER_KEY = "developer key";
// CLIENT_ID == Google APIs Console Project Number:
public static final String CLIENT_ID = "client_id";
public static final String YOUTUBE_AUTH_TOKEN_TYPE = "youtube";
private static final String AUTH_URL = "https://www.google.com/accounts/ClientLogin";
// Uploader's user-name and password
private static final String USER_NAME = "usersemail#useremail.usersemail";
private static final String PASSWORD = "userspassword";
private static final String INITIAL_UPLOAD_URL = "https://uploads.gdata.youtube.com/resumable/feeds/api/users/default/uploads";
private static String getClientAuthToken() {
try {
URL url = new URL(AUTH_URL);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
String template = "Email=%s&Passwd=%s&service=%s&source=%s";
String userName = USER_NAME; // TODO
String password = PASSWORD; // TODO
String service = YOUTUBE_AUTH_TOKEN_TYPE;
String source = CLIENT_ID;
userName = URLEncoder.encode(userName, "UTF-8");
password = URLEncoder.encode(password, "UTF-8");
String loginData = String.format(template, userName, password, service, source);
OutputStreamWriter outStreamWriter = new OutputStreamWriter(urlConnection.getOutputStream());
outStreamWriter.write(loginData);
outStreamWriter.close();
int responseCode = urlConnection.getResponseCode();
if (responseCode != 200) {
Log.d(TAG, "Got an error response : " + responseCode + " " + urlConnection.getResponseMessage());
throw new IOException(urlConnection.getResponseMessage());
} else {
InputStream is = urlConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ((line = br.readLine()) != null) {
if (line.startsWith("Auth=")) {
String split[] = line.split("=");
String token = split[1];
Log.d(TAG, "Auth Token : " + token);
return token;
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String upload(YoutubeUploadRequest uploadRequest, ProgressListner listner, Activity activity) {
totalBytesUploaded = 0;
String authToken = getClientAuthToken();
if(authToken != null) {
String uploadUrl = uploadMetaData(uploadRequest, authToken, activity, true);
File file = getFileFromUri(uploadRequest.getUri(), activity);
long currentFileSize = file.length();
int uploadChunk = 1024 * 1024 * 3; // 3MB
int start = 0;
int end = -1;
String videoId = null;
double fileSize = currentFileSize;
while (fileSize > 0) {
if (fileSize - uploadChunk > 0) {
end = start + uploadChunk - 1;
} else {
end = start + (int) fileSize - 1;
}
Log.d(TAG, String.format("start=%s end=%s total=%s", start, end, file.length()));
try {
videoId = gdataUpload(file, uploadUrl, start, end, authToken, listner);
fileSize -= uploadChunk;
start = end + 1;
} catch (IOException e) {
Log.d(TAG,"Error during upload : " + e.getMessage());
}
}
if (videoId != null) {
return videoId;
}
}
return null;
}
public static int totalBytesUploaded = 0;
#SuppressLint("DefaultLocale")
#SuppressWarnings("resource")
private static String gdataUpload(File file, String uploadUrl, int start, int end, String clientLoginToken, ProgressListner listner) throws IOException {
int chunk = end - start + 1;
int bufferSize = 4096;
byte[] buffer = new byte[bufferSize];
FileInputStream fileStream = new FileInputStream(file);
URL url = new URL(uploadUrl);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty("Authorization", String.format("GoogleLogin auth=\"%s\"", clientLoginToken));
urlConnection.setRequestProperty("GData-Version", "2");
urlConnection.setRequestProperty("X-GData-Client", CLIENT_ID);
urlConnection.setRequestProperty("X-GData-Key", String.format("key=%s", DEVELOPER_KEY));
// some mobile proxies do not support PUT, using X-HTTP-Method-Override to get around this problem
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("X-HTTP-Method-Override", "PUT");
urlConnection.setDoOutput(true);
urlConnection.setFixedLengthStreamingMode(chunk);
urlConnection.setRequestProperty("Content-Type", "video/3gpp");
urlConnection.setRequestProperty("Content-Range", String.format("bytes %d-%d/%d", start, end,
file.length()));
Log.d(TAG, urlConnection.getRequestProperty("Content-Range"));
OutputStream outStreamWriter = urlConnection.getOutputStream();
fileStream.skip(start);
double currentFileSize = file.length();
int bytesRead;
int totalRead = 0;
while ((bytesRead = fileStream.read(buffer, 0, bufferSize)) != -1) {
outStreamWriter.write(buffer, 0, bytesRead);
totalRead += bytesRead;
totalBytesUploaded += bytesRead;
double percent = (totalBytesUploaded / currentFileSize) * 100;
if(listner != null){
listner.onUploadProgressUpdate((int) percent);
}
System.out.println("GTL You tube upload progress: " + percent + "%");
/*
Log.d(LOG_TAG, String.format(
"fileSize=%f totalBytesUploaded=%f percent=%f", currentFileSize,
totalBytesUploaded, percent));
*/
//dialog.setProgress((int) percent);
// TODO My settings
if (totalRead == (end - start + 1)) {
break;
}
}
outStreamWriter.close();
int responseCode = urlConnection.getResponseCode();
Log.d(TAG, "responseCode=" + responseCode);
Log.d(TAG, "responseMessage=" + urlConnection.getResponseMessage());
try {
if (responseCode == 201) {
String videoId = parseVideoId(urlConnection.getInputStream());
return videoId;
} else if (responseCode == 200) {
Set<String> keySet = urlConnection.getHeaderFields().keySet();
String keys = urlConnection.getHeaderFields().keySet().toString();
Log.d(TAG, String.format("Headers keys %s.", keys));
for (String key : keySet) {
Log.d(TAG, String.format("Header key %s value %s.", key, urlConnection.getHeaderField(key)));
}
Log.w(TAG, "Received 200 response during resumable uploading");
throw new IOException(String.format("Unexpected response code : responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage()));
} else {
if ((responseCode + "").startsWith("5")) {
String error = String.format("responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage());
Log.w(TAG, error);
// TODO - this exception will trigger retry mechanism to kick in
// TODO - even though it should not, consider introducing a new type so
// TODO - resume does not kick in upon 5xx
throw new IOException(error);
} else if (responseCode == 308) {
// OK, the chunk completed succesfully
Log.d(TAG, String.format("responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage()));
} else {
// TODO - this case is not handled properly yet
Log.w(TAG, String.format("Unexpected return code : %d %s while uploading :%s", responseCode,
urlConnection.getResponseMessage(), uploadUrl));
}
}
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
return null;
}
private static String parseVideoId(InputStream atomDataStream) throws ParserConfigurationException,
SAXException, IOException {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(atomDataStream);
NodeList nodes = doc.getElementsByTagNameNS("*", "*");
for (int i = 0; i < nodes.getLength(); i++) {
Node node = nodes.item(i);
String nodeName = node.getNodeName();
if (nodeName != null && nodeName.equals("yt:videoid")) {
return node.getFirstChild().getNodeValue();
}
}
return null;
}
private static File getFileFromUri(Uri uri, Activity activity) {
try {
String filePath = null;
String[] proj = { Video.VideoColumns.DATA };
Cursor cursor = activity.getContentResolver().query(uri, proj, null, null, null);
if(cursor.moveToFirst()) {
int column_index = cursor.getColumnIndexOrThrow(Video.VideoColumns.DATA);
filePath = cursor.getString(column_index);
}
cursor.close();
//String filePath = cursor.getString(cursor.getColumnIndex(Video.VideoColumns.DATA));
File file = new File(filePath);
cursor.close();
return file;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private static String uploadMetaData(YoutubeUploadRequest uploadRequest, String clientLoginToken, Activity activity, boolean retry) {
try {
File file = getFileFromUri(uploadRequest.getUri(), activity);
if(file != null) {
String uploadUrl = INITIAL_UPLOAD_URL;
URL url = new URL(uploadUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization", String.format("GoogleLogin auth=\"%s\"", clientLoginToken));
connection.setRequestProperty("GData-Version", "2");
connection.setRequestProperty("X-GData-Client", CLIENT_ID);
connection.setRequestProperty("X-GData-Key", String.format("key=%s", DEVELOPER_KEY));
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/atom+xml");
connection.setRequestProperty("Slug", file.getAbsolutePath());
String title = uploadRequest.getTitle();
String description = uploadRequest.getDescription();
String category = uploadRequest.getCategory();
String tags = uploadRequest.getTags();
String template = readFile(activity, R.raw.gdata).toString();
String atomData = String.format(template, title, description, category, tags);
/*String template = readFile(activity, R.raw.gdata_geo).toString();
atomData = String.format(template, title, description, category, tags,
videoLocation.getLatitude(), videoLocation.getLongitude());*/
OutputStreamWriter outStreamWriter = new OutputStreamWriter(connection.getOutputStream());
outStreamWriter.write(atomData);
outStreamWriter.close();
int responseCode = connection.getResponseCode();
if (responseCode < 200 || responseCode >= 300) {
// The response code is 40X
if ((responseCode + "").startsWith("4") && retry) {
Log.d(TAG, "retrying to fetch auth token for ");
clientLoginToken = getClientAuthToken();
// Try again with fresh token
return uploadMetaData(uploadRequest, clientLoginToken, activity, false);
} else {
return null;
}
}
return connection.getHeaderField("Location");
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static CharSequence readFile(Activity activity, int id) {
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(activity.getResources().openRawResource(id)));
String line;
StringBuilder buffer = new StringBuilder();
while ((line = in.readLine()) != null) {
buffer.append(line).append('\n');
}
// Chomp the last newline
buffer.deleteCharAt(buffer.length() - 1);
return buffer;
} catch (IOException e) {
return "";
} finally {
closeStream(in);
}
}
/**
* Closes the specified stream.
*
* #param stream The stream to close.
*/
private static void closeStream(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// Ignore
}
}
}
public static interface ProgressListner {
void onUploadProgressUpdate(int progress);
}
}
And here is YoutubeUploadRequest.java
import android.net.Uri;
public class YoutubeUploadRequest {
private static final String DEFAULT_VIDEO_CATEGORY = "News";
private static final String DEFAULT_VIDEO_TAGS = "mobile";
private String title;
private String strUri;
private String description;
private String category = DEFAULT_VIDEO_CATEGORY;
private String tags = DEFAULT_VIDEO_TAGS;
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getTags() {
return tags;
}
public void setTags(String tags) {
this.tags = tags;
}
public String getStrUri() {
return strUri;
}
public void setStrUri(String strUri) {
this.strUri = strUri;
}
public Uri getUri() {
return Uri.parse(strUri);
}
public void setUri(Uri uri) {
this.strUri = uri.toString();
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
}
Here is My MainActivity.java
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.example.trialanderror.YoutubeUploader.ProgressListner;
public class MainActivity extends Activity {
private static final String TAG = "MainActivity";
private static final int CAPTURE_RETURN = 1;
private static final int GALLERY_RETURN = 2;
private static final int SUBMIT_RETURN = 3;
private ProgressBar progressBar;
private Button btnCaptureVideo;
private Button btnSelectFromGallery;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnCaptureVideo = (Button) findViewById(R.id.btnCaptureVideo);
btnCaptureVideo.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent();
i.setAction("android.media.action.VIDEO_CAPTURE");
startActivityForResult(i, CAPTURE_RETURN);
}
});
btnSelectFromGallery = (Button) findViewById(R.id.btnSelectFromGallery);
btnSelectFromGallery.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_PICK);
intent.setType("video/*");
List<ResolveInfo> list = getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
if (list.size() <= 0) {
Log.d(TAG, "no video picker intent on this hardware");
return;
}
startActivityForResult(intent, GALLERY_RETURN);
}
});
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setVisibility(View.GONE);
btnSelectFromGallery.setEnabled(true);
btnCaptureVideo.setEnabled(true);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case CAPTURE_RETURN:
case GALLERY_RETURN:
if (resultCode == RESULT_OK) {
/*Intent intent = new Intent(this, SubmitActivity.class);
intent.setData(data.getData());
startActivityForResult(intent, SUBMIT_RETURN);*/
progressBar.setVisibility(View.VISIBLE);
btnSelectFromGallery.setEnabled(false);
btnCaptureVideo.setEnabled(false);
uploadYoutube(data.getData());
}
break;
case SUBMIT_RETURN:
if (resultCode == RESULT_OK) {
Toast.makeText(MainActivity.this, "thank you!", Toast.LENGTH_LONG).show();
} else {
// Toast.makeText(DetailsActivity.this, "submit failed or cancelled",
// Toast.LENGTH_LONG).show();
}
break;
}
}
private void uploadYoutube(final Uri data) {
new AsyncTask<Void, Integer, Void>() {
#Override
protected Void doInBackground(Void... params) {
YoutubeUploadRequest request = new YoutubeUploadRequest();
request.setUri(data);
//request.setCategory(category);
//request.setTags(tags);
request.setTitle("MPRJ Video Tite");
request.setDescription("MPRJ Video Test");
YoutubeUploader.upload(request, new ProgressListner() {
#Override
public void onUploadProgressUpdate(int progress) {
publishProgress(progress);
}
}, MainActivity.this);
return null;
}
#Override
protected void onProgressUpdate(Integer... values) {
progressBar.setProgress(values[0]);
if(values[0] == 100){
progressBar.setVisibility(View.GONE);
btnSelectFromGallery.setEnabled(true);
btnCaptureVideo.setEnabled(true);
}
};
}.execute();
}
}

Make a string from a View element

I have two seekbars in my main activity but I can only use one of them at a time, so I need to retrieve a value seekbarx and seekbary, store either of them in a string variable to use it forward. I already used onProgressChange and onStopTrackingTouch but I guess it doesn't hold the value long enough.
This is what I had for the seekbars
package edu.itdurango.servocontrolyun;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class MainActivity extends Activity {
// TODO: adjust ARDUINO_IP_ADDRESS
public final String ARDUINO_IP_ADDRESS = "192.168.1.71"; //Dirección IP del Arduino Yun
public final String TAG = "ArduinoYun";
public String servo;
private SeekBar SeekBarX; //Barra de búsqueda del eje X
private SeekBar SeekBarY; //Barra de búsqueda del eje Y
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SeekBarX = (SeekBar) findViewById(R.id.barraEjeX);
/*SeekBarX.setOnClickListener(new View.OnClickListener() {
public void onClick(View barraEjeX) {
servo = "servox/";
}
});*/
SeekBarX.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
#Override
public void onStopTrackingTouch(SeekBar barraEjeX) {
}
#Override
public void onStartTrackingTouch(SeekBar barraEjeX) {
}
#Override
public void onProgressChanged(SeekBar barraEjeX, int progressX,
boolean fromUser) {
servo = "servox/";
log("touching X bar. servo = " + servo);
QueueX.offer(progressX);
}
});
SeekBarY = (SeekBar) findViewById(R.id.barraEjeY);
/*SeekBarY.setOnClickListener(new View.OnClickListener() {
public void onClick(View barraEjeY) {
servo = "servoy/";
}
});*/
SeekBarY.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
#Override
public void onStopTrackingTouch(SeekBar barraEjeY) {
}
#Override
public void onStartTrackingTouch(SeekBar barraEjeY) {
}
#Override
public void onProgressChanged(SeekBar barraEjeY, int progressY,
boolean fromUser) {
servo = "servoy/";
log("touching Y bar. servo = " + servo);
QueueY.offer(progressY);
}
});
}
#Override
protected void onStart() {
mStop.set(false);
if(sNetworkThreadSend == null){
sNetworkThreadSend = new Thread(mNetworkRunnableSend);
sNetworkThreadSend.start();
}
super.onStart();
}
#Override
protected void onStop() {
mStop.set(true);
QueueX.clear();
QueueX.offer(-1);
QueueY.clear();
QueueY.offer(-1);
if(sNetworkThreadSend != null) sNetworkThreadSend.interrupt();
super.onStop();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void log(String s){
Log.d(">==< "+TAG+" >==<", s);
}
private ArrayBlockingQueue<Integer> QueueX = new ArrayBlockingQueue<Integer>(100);
private ArrayBlockingQueue<Integer> QueueY = new ArrayBlockingQueue<Integer>(100);
private AtomicBoolean mStop = new AtomicBoolean(false);
private static Thread sNetworkThreadSend = null;
private final Runnable mNetworkRunnableSend = new Runnable() {
#Override
public void run() {
log("starting network thread for sending");
String urlBase = "http://"+ARDUINO_IP_ADDRESS+"/arduino/"+servo;
String url;
try {
while(!mStop.get()){
int val;
if (servo == "servoy/"){
val = QueueY.take();
if(val >= 0){
HttpClient httpClient = new DefaultHttpClient();
url = urlBase.concat(String.valueOf(val));
log("executing httpClient request");
HttpResponse response = httpClient.execute(new HttpGet(url));
log(url);
}
}
if (servo == "servox/"){
val = QueueX.take();
if(val >= 0){
HttpClient httpClient = new DefaultHttpClient();
url = urlBase.concat(String.valueOf(val));
log("executing httpClient request");
HttpResponse response = httpClient.execute(new HttpGet(url));
log(url);
}
}
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
log("returning from network thread for sending");
sNetworkThreadSend = null;
}
};
private static Thread sNetworkThreadReceive = null;
private final Runnable mNetworkRunnableReceive = new Runnable() {
#Override
public void run() {
log("starting network thread for receiving");
String url = "http://"+ARDUINO_IP_ADDRESS+"/data/get/D9";
while(!mStop.get()){
try {
String string = readURL(url);
String value = "";
try {
JSONObject jsonMain = new JSONObject(string);
value = jsonMain.get("value").toString();
log("value = "+value);
} catch (Exception e) {
e.printStackTrace();
}
updateText(value);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
log("returning from network thread for receiving");
sNetworkThreadReceive = null;
}
};
public void updateText(final String value){
runOnUiThread(new Runnable() {
#Override
public void run() {
TextView textView = (TextView) findViewById(R.id.textView1);
textView.setText(value);
}
});
}
public String readURL(String value){
URL url;
StringBuilder builder = new StringBuilder();
try {
url = new URL(value);
URLConnection yc = url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null){
builder.append(inputLine);
}
in.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return builder.toString();
}
}
It prints in the LogCat touching Y bar. servo = servoy/ but when I want to use the servo value it prints null.
How can I hold the value for this string?

Reading xml from rss feed

package com.example.nasadailyimage;
import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.widget.ImageView;
import android.widget.TextView;
public class NasaDailyImage extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nasa_daily_image);
IotdHandler handler = new IotdHandler();
System.out.println("handler object created");
Log.d("NasaDailyImage","handler object created");
new ConfigParser().execute();//here i have called execute on my AsyncTaskclass
// handler.processFeed();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.nasa_daily_image, menu);
return true;
}
}
and my ConfigParser class
import java.io.InputStream;
import java.net.URL;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import android.os.AsyncTask;
import android.util.Log;
public class ConfigParser extends AsyncTask<Void, Void,Void > {
private String url="http://www.nasa.gov/rss/dyn/image_of_the_day.rss";
#Override
protected Void doInBackground(Void... params) {
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
XMLReader reader = parser.getXMLReader();
IotdHandler handler=new IotdHandler();
reader.setContentHandler(handler);
InputStream inputStream = new URL(url).openStream();
reader.parse(new InputSource(inputStream));
}
catch (Exception e)
{
Log.d("IotdHandler", "Exception");
e.printStackTrace();
}
return null;
}
}
and my IotdHandler Class
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
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 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 Bitmap image = null;
private String title = null;
private StringBuffer description = new StringBuffer();
private String date = null;
private String imageUrl;
private Bitmap getBitmap(String url) {
try {
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)
{ ioe.printStackTrace(); }
return null;
}
public void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {
if (localName.equals("enclosure"))
{ inUrl = true;
imageUrl=attributes.getValue("url");
System.out.println(imageUrl);
}
else { inUrl = false; }
if (localName.startsWith("item"))
{ inItem = true; }
else if (inItem) {
if (localName.equals("title"))
{ inTitle = true;
System.out.println("invtitle");}
else { inTitle = false; }
if (localName.equals("description"))
{ inDescription = true;
System.out.println("indiscription");}
else { inDescription = false; }
if (localName.equals("pubDate"))
{ inDate = true;
System.out.println("dtae");}
else { inDate = false; }
}
}
public void characters(char ch[], int start, int length) {
String chars = new String(ch).substring(start, start + length);
if (inUrl && url == null) { image = getBitmap(imageUrl); }
if (inTitle && title == null) { title = chars; }
if (inDescription) { description.append(chars); }
if (inDate && date == null) { date = chars; }
}
public Bitmap getImage() { return image; }
public String getTitle() { return title; }
public StringBuffer getDescription() { return description; }
public String getDate() { return date; }
}
So basically I want to get daily image updates from NASA, but in my program everything is returning null I don't know what I am trying wrong, my xml file is not parsing to avoid the NetworkOnMainTHread I have also used Async class, any help.

Here is the code parsing xml rss feed...
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
#TargetApi(Build.VERSION_CODES.GINGERBREAD)
#SuppressLint("NewApi")
public class XMLParsingDOMExample extends Activity {
ArrayList<String> title;
ArrayList<String> description;
ArrayList<String> pubDate;
ItemAdapter adapter1;
#TargetApi(Build.VERSION_CODES.GINGERBREAD)
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
ListView list = (ListView) findViewById(R.id.list);
title = new ArrayList<String>();
description = new ArrayList<String>();
pubDate = new ArrayList<String>();
parse();
adapter1 = new ItemAdapter(this);
list.setAdapter(adapter1);
}
protected void parse() {
// TODO Auto-generated method stub
try {
URL url = new URL(
"http://www.nasa.gov/rss/dyn/image_of_the_day.rss");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(url.openStream()));
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("item");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
Element fstElmnt = (Element) node;
NodeList nameList = fstElmnt.getElementsByTagName("title");
Element nameElement = (Element) nameList.item(0);
nameList = nameElement.getChildNodes();
title.add(((Node) nameList.item(0)).getNodeValue());
NodeList websiteList = fstElmnt.getElementsByTagName("description");
Element websiteElement = (Element) websiteList.item(0);
websiteList = websiteElement.getChildNodes();
description.add(((Node) websiteList.item(0)).getNodeValue());
NodeList websiteList1 = fstElmnt.getElementsByTagName("pubDate");
Element websiteElement1 = (Element) websiteList1.item(0);
websiteList1 = websiteElement1.getChildNodes();
pubDate.add(((Node) websiteList1.item(0)).getNodeValue());
}
} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}
}
class ItemAdapter extends BaseAdapter {
final LayoutInflater mInflater;
private class ViewHolder {
public TextView title_text;
public TextView des_text;
public TextView date_text;
}
public ItemAdapter(Context context) {
// TODO Auto-generated constructor stub
super();
mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
//#Override
public int getCount() {
return title.size();
}
//#Override
public Object getItem(int position) {
return position;
}
//#Override
public long getItemId(int position) {
return position;
}
//#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
final ViewHolder holder;
if (convertView == null) {
view = mInflater.inflate(R.layout.mainpage_listitem_activity, parent, false);
holder = new ViewHolder();
holder.title_text = (TextView) view.findViewById(R.id.title_text);
holder.des_text = (TextView) view.findViewById(R.id.des_text);
holder.date_text = (TextView) view.findViewById(R.id.date_text);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
holder.title_text.setText(""+title.get(position));
holder.des_text.setText(""+Html.fromHtml(description.get(position)));
holder.date_text.setText(""+pubDate.get(position));
return view;
}
}
}

I posted a Gist on how to do this using the android-rss library with the droidQuery library:
final RSSHandler handler = new RSSHandler(new RSSConfig());
$.ajax(new AjaxOptions().url(options.url())
.type("GET")
.dataType("XML")
.context(this)
.SAXContentHandler(handler)
.success(new Function() {
#Override
public void invoke($ droidQuery, Object... params) {
RSSFeed feed = handler.feed();
//TODO: handle feed here.
}
}));

Make an interface in your project first
public interface mMyInterface {
void processFinish(String response);
}
Then in your AsyncTaskClass do the following modifications
public class ConfigParser extends AsyncTask<Void, Void,Void > {
public mMyInterface delegate=null;
private String url="http://www.nasa.gov/rss/dyn/image_of_the_day.rss";
#Override
protected Void doInBackground(Void... params) {
try {
//Log.i("inJSONPARSERCLASS","success");
DefaultHttpClient client=new DefaultHttpClient();
HttpPost post=new HttpPost(url);
HttpResponse httpResponse=client.execute(post);
HttpEntity entity=httpResponse.getEntity();
is=entity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
catch (Exception e) {
Log.e("Connection Error", "Error " + e.toString());
}
try {
BufferedReader reader=new BufferedReader(new InputStreamReader(is, "iso-8859-1"),8);
StringBuilder sb=new StringBuilder();
String line=null;
while((line=reader.readLine())!=null){
sb.append(line+"\n");
}
is.close();
xml=sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
Log.i("main XML",""+xml);
return xml;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
delegate.processFinish(result);
}
}
Now in your class which is extending the activity , implement the interface mMyInterface , this will override its method processFinish(String response), now use "response" as a string and pass it to the class where the parsing is being done
#Override
public void processFinish(String response) {
String xml=response;
//do SAXparsing stuff here, parse this xml string which contains the whole data u need to
parse
}
I hope this hint will work out for you very well. :)

FileNotFoundException while reading RSS in Android

I am trying to read an RSS feed. I have tried many links using the code below and succeeded, but when I try with that link above I get a FileNotFoundException. What could cause this, and how do I fix my code?
EfficientAdapter class:
package com.xmlparse;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class EfficientAdapter extends BaseAdapter
{
private Activity activity;
private ArrayList<Post> data;
private static LayoutInflater inflater = null;
//public ImageLoader imageLoader;
ViewHolder holder;
EfficientAdapter(Activity a, ArrayList<Post> d) {
activity = a;
data = d;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// imageLoader = new ImageLoader(activity.getApplicationContext());
}
#Override
public int getCount() {
return data.toArray().length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
public static class ViewHolder {
public TextView label;
public TextView addr;
public ImageView image;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null) {
vi = inflater.inflate(R.layout.row, null);
holder = new ViewHolder();
holder.label = (TextView) vi.findViewById(R.id.title);
holder.addr = (TextView) vi.findViewById(R.id.details);
holder.image = (ImageView) vi.findViewById(R.id.thumb);
vi.setTag(holder);
} else
holder = (ViewHolder) vi.getTag();
holder.label.setText(data.get(position).getTitle());
// holder.addr.setText(data.get(position).getPubDate());
holder.addr.setText(data.get(position).getDescription());
imageLoader.DisplayImage((data.get(position).getThumbnail()), activity,
holder.image, 72, 72);
URL url = null;
try {
url = new URL((data.get(position).getThumbnail()));
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
InputStream content = null;
try {
content = (InputStream)url.getContent();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Drawable d = Drawable.createFromStream(content , "src");
Bitmap mIcon1 = null;
try {
mIcon1 =
BitmapFactory.decodeStream(url.openConnection().getInputStream());
} catch (IOException e) {
e.printStackTrace();
}
holder.image.setImageBitmap(Bitmap.createScaledBitmap(mIcon1, 72, 72, false));
return vi;
}
}
Post class:
package com.xmlparse;
public class Post {
private String title;
private String thumbnail;
private String url;
private String description;
private String pubDate;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getThumbnail() {
return thumbnail;
}
public void setThumbnail(String thumbnail) {
this.thumbnail = thumbnail;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public void setDescription(String description) {
this.description = description;
}
public String getDescription() {
return description;
}
public void setPubDate(String pubDate) {
this.pubDate = pubDate;
}
public String getPubDate() {
return pubDate;
}
}
xmlparsemain activity class:
package com.xmlparse;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
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.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class xmlparsemain extends Activity {
/** Called when the activity is first created. */
ListView lv1;
ProgressDialog ShowProgress;
public ArrayList<Post> PostList = new ArrayList<Post>();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
lv1 = (ListView) findViewById(R.id.listView1);
ShowProgress = ProgressDialog.show(xmlparsemain.this, "",
"Loading. Please wait...", true);
new loadingTask().execute("http://screenrant.com/mobile/movie-reviews-feed.php");
lv1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(Intent.ACTION_VIEW).setData(Uri
.parse(PostList.get(position).getUrl()));
startActivity(intent);
}
});
}
class loadingTask extends AsyncTask<String, Void, String> {
protected String doInBackground(String... urls) {
SAXHelper sh = null;
try {
sh = new SAXHelper(urls[0]);
} catch (MalformedURLException e) {
e.printStackTrace();
}
sh.parseContent("");
return "";
}
protected void onPostExecute(String s) {
lv1.setAdapter(new EfficientAdapter(xmlparsemain.this, PostList));
ShowProgress.dismiss();
}
}
class SAXHelper {
public HashMap<String, String> userList = new HashMap<String, String>();
private URL url2;
public SAXHelper(String url1) throws MalformedURLException {
this.url2 = new URL(url1);
}
public RSSHandler parseContent(String parseContent) {
RSSHandler df = new RSSHandler();
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(df);
/* URLConnection con = url2.openConnection();
con.setConnectTimeout(20000);
InputSource is = new InputSource(new InputStreamReader(con.getInputStream()));
xr.parse(is);*/
xr.parse(new InputSource(url2.openStream()));
} catch (Exception e) {
e.printStackTrace();
}
return df;
}
}
class RSSHandler extends DefaultHandler {
private Post currentPost = new Post();
StringBuffer chars = new StringBuffer();
#Override
public void startElement(String uri, String localName, String qName,
Attributes atts) {
chars = new StringBuffer();
if (localName.equalsIgnoreCase("item")) {
}
}
#Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (localName.equalsIgnoreCase("title")
&& currentPost.getTitle() == null) {
currentPost.setTitle(chars.toString());
}
if (localName.equalsIgnoreCase("pubDate")
&& currentPost.getPubDate() == null) {
currentPost.setPubDate(chars.toString());
}
if (localName.equalsIgnoreCase("description")
&& currentPost.getDescription() == null) {
currentPost.setDescription(chars.toString());
}
if (localName.equalsIgnoreCase("thumbnail")
&& currentPost.getThumbnail() == null) {
currentPost.setThumbnail(chars.toString());
}
if (localName.equalsIgnoreCase("link")
&& currentPost.getUrl() == null) {
currentPost.setUrl(chars.toString());
}
if (localName.equalsIgnoreCase("item")) {
PostList.add(currentPost);
currentPost = new Post();
}
}
#Override
public void characters(char ch[], int start, int length) {
chars.append(new String(ch, start, length));
}
}
}
My logcat report:
02-29 15:20:44.183: W/System.err(2470): java.io.FileNotFoundException: http://screenrant.com/mobile/movie-news-feed.php

try using HTtpConnection instead of URLConnection, as follows:
InputStream callWebErvice(String serviceURL){
// http get client
HttpClient client=new DefaultHttpClient();
HttpGet getRequest=new HttpGet();
try {
// construct a URI object
getRequest.setURI(new URI(serviceURL));
} catch (URISyntaxException e) {
Log.e("URISyntaxException", e.toString());
}
// buffer reader to read the response
BufferedReader in=null;
// the service response
HttpResponse response=null;
try {
// execute the request
response = client.execute(getRequest);
} catch (ClientProtocolException e) {
Log.e("ClientProtocolException", e.toString());
} catch (IOException e) {
Log.e("IO exception", e.toString());
}
if(response!=null)
return response.getEntity().getContent();
else
return null;
}
and change line xr.parse(new InputSource(url2.openStream()));
to
xr.parse(new InputSource(callWebErvice(url2)));

set image in dynamic grid view

GridActivity.java
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Collection;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class GridActivity extends Activity
{
ArrayList<String> imageurl=new ArrayList<String>();
String albumId= ConstantData.album_id;
String userId = ConstantData.user_id;
int pageNo =1;
int limit = 20;
ArrayList<Object> result;
XmlParser parser;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.photos_activity);
//Add required urls
try {
DefaultHttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://192.168.5.10/ijoomer_development/index.php?option=com_ijoomer&plg_name=jomsocial&pview=album&ptask=photo_paging&userid="+ ConstantData.user_id +"&sessionid="+ ConstantData.session_id +"&tmpl=component&albumid="+ ConstantData.album_id +"&pageno=1&limit=20");
StringBuffer strBuffer = new StringBuffer("<data><userid>" + userId + "</userid><albumid>" + albumId + "</albumid><pageno>" + pageNo +"</pageno><limit>"+ limit +"</limit></data>");
StringEntity strEntity = new StringEntity(strBuffer.toString());
post.setEntity(strEntity);
HttpResponse response = client.execute(post);
InputStream in = response.getEntity().getContent();
String strResponse = convertStreamToString(in);
parser = new XmlParser(in, new AddAlbumDetailBean());
result = parser.parse("data", "photo");
//Log.i("aBean Value", ""+aBean);
//System.out.println(strResponse);
String startCode = "<code>";
String endCode = "</code>";
String starPhotoCount = "<photocount>";
String endPhotoCount ="</photocount>";
String starPhotos = "<photos>";
String endPhotos ="</photos>";
String startPhoto = "<photo>";
String endPhoto = "</photo>";
String startId = "<Id>";
String endId = "</Id>";
String starTitle = "<title>";
String endTitle ="</title>";
String startThumb ="<thumb>";
String endThumb = "</thumb>";
String startUrl = "<url>";
String endUrl = "</url>";
if (startCode.equalsIgnoreCase("<code>") && endCode.equalsIgnoreCase("</code>"))
{
int startC = strResponse.indexOf(startCode);
int endC = strResponse.indexOf(endCode);
Log.i("startCode", ""+startC);
Log.i("endCode", ""+endC);
String OldCode = strResponse.substring(startC, endC);
int startCodeindex = OldCode.indexOf(">");
String code = OldCode.substring(startCodeindex + 1).trim();
Log.i("Code", ""+code);
}
if (starPhotoCount.equalsIgnoreCase("<photocount>") && endPhotoCount.equalsIgnoreCase("</photocount>"))
{
int startPC = strResponse.indexOf(starPhotoCount);
int endPC = strResponse.indexOf(endPhotoCount);
Log.i("starPhotoCount", ""+startPC);
Log.i("endPhotoCount", ""+endPC);
String OldPC = strResponse.substring(startPC, endPC);
int startPCindex = OldPC.indexOf(">");
String photocount = OldPC.substring(startPCindex + 1).trim();
Log.i("PhotoCount", ""+photocount);
}
if (starPhotos.equalsIgnoreCase("<photos>") && endPhotos.equalsIgnoreCase("</photos>"))
{
int startPs = strResponse.indexOf(starPhotos);
int endPs = strResponse.indexOf(endPhotos);
Log.i("starPhotos", ""+startPs);
Log.i("endPhotos", ""+endPs);
String OldPhotos = strResponse.substring(startPs, endPs);
int startPhotosindex = OldPhotos.indexOf(">");
String photos = OldPhotos.substring(startPhotosindex + 1).trim();
Log.i("Photos", ""+photos);
}
if (startPhoto.equalsIgnoreCase("<photo>") && endPhoto.equalsIgnoreCase("</photo>"))
{
int startP = strResponse.indexOf(startPhoto);
int endP = strResponse.indexOf(endPhoto);
Log.i("startPhoto", ""+startP);
Log.i("endPhoto", ""+endP);
String OldThumb = strResponse.substring(startP, endP);
int startUrlindex = OldThumb.indexOf(">");
String photo = OldThumb.substring(startUrlindex + 1).trim();
Log.i("Photo", ""+photo);
}
/*if (startId.equalsIgnoreCase("<id>") && endId.equalsIgnoreCase("</id>"))
{
int startI = strResponse.indexOf(startId);
int endI = strResponse.indexOf(endId);
Log.i("startId", ""+startI);
Log.i("endId", ""+endI);
String OldId = strResponse.substring(startI, endI);
int startIdindex = OldId.indexOf(">");
String id = OldId.substring(startIdindex + 1).trim();
Log.i("ID", ""+id);
}*/
if (starTitle.equalsIgnoreCase("<title>") && endTitle.equalsIgnoreCase("</title>"))
{
int startT = strResponse.indexOf(starTitle);
int endT = strResponse.indexOf(endTitle);
Log.i("startTitle", ""+startT);
Log.i("endTitle", ""+endT);
String OldTitle = strResponse.substring(startT, endT);
int startTitleindex = OldTitle.indexOf(">");
String title = OldTitle.substring(startTitleindex + 1).trim();
Log.i("Title", ""+title);
}
if (startThumb.equalsIgnoreCase("<thumb>") && endThumb.equalsIgnoreCase("</thumb>"))
{
int startTh = strResponse.indexOf(startThumb);
int endTh = strResponse.indexOf(endThumb);
Log.i("startThumb", ""+startTh);
Log.i("endThumb", ""+endTh);
String OldThumb = strResponse.substring(startTh, endTh);
int startthumbindex = OldThumb.indexOf(">");
String thumb = OldThumb.substring(startthumbindex + 1).trim();
Log.d("Thumb Url", thumb);
imageurl.add(thumb);
Log.i("Thu0mb", ""+thumb);
}
if (startUrl.equalsIgnoreCase("<url>") && endId.equalsIgnoreCase("</url>"))
{
int startU = strResponse.indexOf(startUrl);
int endU = strResponse.indexOf(endUrl);
Log.i("startUrl", ""+startU);
Log.i("endUrl", ""+endU);
String OldUrl = strResponse.substring(startU, endU);
int startUrlindex = OldUrl.indexOf(">");
String strUrl = OldUrl.substring(startUrlindex + 1).trim();
Log.i("Url", ""+strUrl);
}
}
catch (Exception e) {
e.printStackTrace();
}
/*imageurl.add("http://java.sogeti.nl/JavaBlog/wp-content/uploads/2009/04/android_icon_256.png");
imageurl.add("http://java.sogeti.nl/JavaBlog/wp-content/uploads/2009/04/android_icon_256.png");
imageurl.add("http://java.sogeti.nl/JavaBlog/wp-content/uploads/2009/04/android_icon_256.png");*/
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(new ImageAdapter(this));
gridView.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView parent,
View v, int position, long id)
{
Toast.makeText(getBaseContext(),
"pic" + (position + 1) + " selected",
Toast.LENGTH_SHORT).show();
}
});
}
public class ImageAdapter extends BaseAdapter
{
private Context context;
public ImageAdapter(Context c)
{
context = c;
}
public int getCount() {
Log.i("SiZE of ImageUrl", ""+imageurl.size());
return imageurl.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent)
{
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(context);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(5, 5, 5, 5);
} else {
imageView = (ImageView) convertView;
}
/*AddAlbumDetailBean aBean = (AddAlbumDetailBean)result.get(position);
imageurl.add(aBean.thumb);*/
String strURL=imageurl.get(position);
Bitmap bitmap = null;
InputStream in = null;
BufferedOutputStream out = null;
URL url;
try {
url = new URL(strURL);
URLConnection conn = url.openConnection();
in=conn.getInputStream();
Bitmap bitmap1= BitmapFactory.decodeStream(in);
imageView.setImageBitmap(bitmap1);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//imageView.setImageResource(imagen]);
return imageView;
}
}
public String convertStreamToString(InputStream in)
throws IOException {
if (in != null) {
Writer writer = new StringWriter();
char[] buffer = new char[1024];
try {
Reader reader = new BufferedReader(
new InputStreamReader(in, "UTF-8"));
int n;
while ((n = reader.read(buffer)) != -1) {
writer.write(buffer, 0, n);
}
} finally {
// in.close();
}
return writer.toString();
} else {
return "";
}
}
}
XMLParser.java
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Vector;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.http.impl.client.DefaultHttpClient;
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.util.Log;
public class XmlParser extends DefaultHandler{
public String RootElement;
public String RecordElement;
public InputStream in;
public Object mainObj;
public Object newObj;
public boolean inProcess;
public String xmlURL;
public ArrayList<Object> Records = null;
private final String TAG = "XmlParser";
StringBuffer buffer = new StringBuffer();
String elementName;
String elementValue;
public XmlParser(InputStream is,Object tempObj)
{
in = is;
mainObj = tempObj;
Log.i("Object value", ""+mainObj);
inProcess = false;
}
public XmlParser(String strURL,Object tempObj)
{
xmlURL = strURL;
mainObj = tempObj;
inProcess = false;
}
public ArrayList<Object> ParseUrl(String rootElement ,String recordElement)
{
RootElement = rootElement;
Log.i("RootElement",RootElement);
RecordElement = recordElement;
Log.i("RecordElement", RecordElement);
try
{
URL sourceUrl = new URL(xmlURL);
Log.d("URl", xmlURL);
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader reader = sp.getXMLReader();
reader.setContentHandler(this);
reader.parse(new InputSource(sourceUrl.openStream()));
}
catch(Exception e)
{
e.printStackTrace();
return null;
}
return this.Records;
}
public ArrayList<Object> parse(String rootElement, String recordElement)
{
RootElement = rootElement;
RecordElement = recordElement;
Log.i("Root Element", ""+RootElement);
Log.i("Record Element", ""+RecordElement);
try{
SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
parser.parse(in, this);
}catch(Exception e){
e.printStackTrace();
return null;
}
return this.Records;
}
#Override
public void startElement(String Uri, String localName,String qName,Attributes attributes) throws SAXException
{
Log.d("URl", xmlURL);
elementValue = "";
Log.i("IN STARTELEMENT", ""+elementValue);
if(localName.length() > 0)
{
Log.i("Local Name Length", ""+localName.length());
Log.i("LocalName", ""+localName);
if(localName.equalsIgnoreCase(RootElement))
{
Records = new ArrayList<Object>();
Log.i("Root element", ""+RootElement);
Log.i("Records", ""+Records);
}
else if(localName.equalsIgnoreCase(RecordElement))
{
newObj = ClassUtils.newObject(mainObj);
Log.i("Main Object", ""+mainObj);
Log.i("Record element", ""+RecordElement);
ClassUtils.objectMapping(newObj, localName, elementValue);
Log.i("Element Value", ""+elementValue);
inProcess = true;
}
}
}
#Override
public void characters(char[] ch,int start,int length) throws SAXException{
elementValue+= new String(ch,start,length).trim();
Log.i("CHARACTERS VALUE", ""+elementValue);
}
#Override
public void endElement(String Uri,String localName,String qName) throws SAXException
{
if(localName.equalsIgnoreCase(RecordElement)){
Records.add(newObj);
inProcess = false;
}
else if(inProcess){
ClassUtils.objectMapping(newObj, localName, elementValue);
}
}
}
AddAlbumDetailActivity.java
import android.util.Log;
public class AddAlbumDetailBean
{
public String data = null;
public String code = null;
public String photocount = null;
public String id = null;
public String title = null;
public String thumb = null;
public String url = null;
public AddAlbumDetailBean()
{
this("","","","","","","");
}
public AddAlbumDetailBean(String data,String code,String photocount,String id,String title,String thumb,String url)
{
this.data = data;
this.code = code;
this.photocount = photocount;
this.id = id;
this.title = title;
this.thumb = thumb;
this.url = url;
}
}

While using grid view it is not easy to Set the Image View. but you can do it by trick.
Take Button instead of the Image and set the Button Background for the Appropriate image.
After that u can able to set the Set the Button in grid view.
Thanks.

Develop Reference

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