How to get bitmap from URL in Blackberry - blackberry

I want to get the Bitmap from URL like -
"https://graph.facebook.com/100003506521332/picture"
I tried how-i-can-display-images-from-url-in-blackberry . But its showing http error 302 .It dont showing the Bitmap. How to resolve the problem ?.

String url = "https://graph.facebook.com/100003506521332/picture";
try
{
bitmap = globleDeclaration.getLiveImage(url, 50, 50);
bitmapField.setBitmap(bitmap);
}
catch (IOException e)
{
e.printStackTrace();
Dialog.alert(e.getMessage());
}
public Bitmap getLiveImage(String url,int width,int height) throws IOException
{
Bitmap bitmap = null;
try
{
byte[] responseData = new byte[10000];
int length = 0;
StringBuffer rawResponse = new StringBuffer();
httpconnection = (HttpConnection) Connector.open(url, Connector.READ, true);
String location=httpconnection.getHeaderField("location");
if(location!=null){
httpconnection = (HttpConnection) Connector.open(location, Connector.READ, true);
}else{
httpconnection = (HttpConnection) Connector.open(url, Connector.READ, true);
}
inputStream = httpconnection.openInputStream();
while (-1 != (length = inputStream.read(responseData)))
{
rawResponse.append(new String(responseData, 0, length));
}
int responseCode = httpconnection.getResponseCode();
if (responseCode != HttpConnection.HTTP_OK)
{
throw new IOException("HTTP response code: "
+ responseCode);
}
final String result = rawResponse.toString();
byte[] dataArray = result.getBytes();
encodeImageBitmap = EncodedImage.createEncodedImage(dataArray, 0, dataArray.length);
}
catch (final Exception ex)
{
System.out.print("Exception (" + ex.getClass() + "): " + ex.getMessage());
}
finally
{
try
{
inputStream.close();
inputStream = null;
httpconnection.close();
httpconnection = null;
}
catch(Exception e){}
}
return bitmap;
}

If you done get responce from this code httpconnection = (HttpConnection) Connector.open(url, Connector.READ, true); which is mention in above answer than u can also use alternative solution for that..
You can pass your your id here http://graph.facebook.com/100003506521332/?fields=picture&type=large than you will get one json responce like that {"picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/70678_100003506521332_1415569305_n.jpg"}
parse this json and get which you want exaclty .. than you will get responce using httpconnection = (HttpConnection) Connector.open(url, Connector.READ, true); also .
if you dont want larger image than remove &type=large from the above url.

//YOUR PACKAGE NAME
package ...........;
//*************************
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import net.rim.device.api.system.Bitmap;
public class Util_ImageLoader {
public static Bitmap getImageFromUrl(String url) {
Bitmap bitmap = null;
try {
String bitmapData = getDataFromUrl(url);
bitmap = Bitmap.createBitmapFromBytes(bitmapData.getBytes(), 0,
bitmapData.length(), 1);
} catch (Exception e1) {
e1.printStackTrace();
}
return bitmap;
}
private static String getDataFromUrl(String url) {
StringBuffer b = new StringBuffer();
InputStream is = null;
HttpConnection c = null;
long len = 0;
int ch = 0;
try {
c = (HttpConnection) Connector.open(url);
is = c.openInputStream();
len = c.getLength();
if (len != -1) {
for (int i = 0; i < len; i++)
if ((ch = is.read()) != -1) {
b.append((char) ch);
}
} else {
while ((ch = is.read()) != -1) {
len = is.available();
b.append((char) ch);
}
}
is.close();
c.close();
} catch (Exception e) {
e.printStackTrace();
}
return b.toString();
}
}
copy this to your package....
Now, to use this class do like this>>>>>>>>
CREATE BITMAP OBJECT:
Bitmap IMAGE;
After That:
IMAGE=Util_ImageLoader.getImageFromUrl("https://graph.facebook.com/100003506521332/picture");
By the way, I think you have missed extension
like JPG,PNG, on your URL.... Check That
Now, add your bitmap where you would like to display the image......
ENJOY!
add(IMAGE);

Related

Blackberry convert Base64 data to byte array showing IOException

I have developed the below code to convert base64 string data to byte array but it's showing IOException
public static EncodedImage getProfileByteArray(String profilePic){
byte[] data=profilePic.getBytes();
byte[] base64Data;
Bitmap bitmap=null;
EncodedImage fullImage=null;
try {
base64Data = Base64InputStream.decode(data, 0, data.length);
fullImage = EncodedImage.createEncodedImage(base64Data, 0, base64Data.length);
bitmap = fullImage.getBitmap();
System.out.println(data);
} catch (IOException e) {
e.printStackTrace();
System.out.println(e+"lkllllllllllllllll");
}
catch(Exception e){
System.out.println(e+"lkllllllllllllllll");
}
return fullImage;
}
The way is that i am calling a webservice through which i am getting base64 image string and trying to convert this base64 string to byte array to display image in EncodedImage format.
Are you trying to display an image from the url fetched from the webservice? The url is the image returned from the webservice? If that is so, please try the below code and let me know:
public Bitmap connectServerForImage(String url) {
HttpConnection httpConnection = null;
DataOutputStream httpDataOutput = null;
InputStream httpInput = null;
int rc;
Bitmap bitmp = null;
try {
httpConnection = (HttpConnection) Connector.open(url+ ";deviceside=true;ConnectionUID=S TCP");
rc = httpConnection.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
throw new IOException("HTTP response code: " + rc);
}
httpInput = httpConnection.openInputStream();
InputStream inp = httpInput;
byte[] b = IOUtilities.streamToBytes(inp);
EncodedImage hai = EncodedImage.createEncodedImage(b, 0, b.length);
return hai.getBitmap();
} catch (Exception ex) {
System.out.println("URL Bitmap Error........" + ex.getMessage());
} finally {
try {
if (httpInput != null)
httpInput.close();
if (httpDataOutput != null)
httpDataOutput.close();
if (httpConnection != null)
httpConnection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return bitmp;
}

get image from bytes blackberry

I am developing a blackberry application which retrieves image from the server , some of images are being retreived and other give error in the encodedImage Line
ImageFromUrl _img = new ImageFromUrl(item.getThumbLink());
byte[] bytes = _img.getbitmap();
Bitmap newBitmap = new Bitmap(width, fieldHeight);
if (bytes != null) {
// bitmap = Bitmap.createBitmapFromBytes(bytes, 0,
// bytes.length, Bitmap.SCALE_TO_FIT);
EncodedImage image = EncodedImage.createEncodedImage(bytes,
0, bytes.length);
}
and that's the connection which get the bytes
ImageFromUrl(String url) {
this.url = url;
}
public byte[] getbitmap() {
try {
connection = (HttpConnection) Connector.open(
url + Connection.getBlackBerryConnectionParams(),
Connector.READ, true);
InputStream is = connection.openInputStream();
DataInputStream dis = new DataInputStream(is);
ByteArrayOutputStream bStrm = new ByteArrayOutputStream();
int ch;
while ((ch = dis.read()) != -1) {
// System.out.println((char) ch);
// msg = msg + (char) ch;
bStrm.write(ch);
}
dataArray = bStrm.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}
return dataArray;
}
how can I solve that to get all images without errors ?
Try this code:
public Bitmap getBitmapFromUrl(String url)
{
Bitmap bitmap=null;
try
{
HttpConnection connection=(HttpConnection)Connector.open(url);
connection.setRequestMethod(HttpConnection.GET);
InputStream is=connection.openInputStream();
int length=is.available();
byte[] data=new byte[length];
data=IOUtilities.streamToBytes(is);
connection.close();
is.close();
bitmap=Bitmap.createBitmapFromBytes(data,0,data.length,1);
if(bitmap!=null)
return bitmap;
else
return bitmap=Bitmap.getBitmapResource("noimage.png");
}
catch (Exception e)
{
return bitmap=Bitmap.getBitmapResource("noimage.png");
}
}

download a pdf file from a given url in blackberry

I am working on a blackberry application in which I need to hit a url create a connection and write a file and save that to SDcard. Currently I am following this particular code. But while creating FileOutputStream object it throws CLassCastException. I am struggling with this.
public void run() {
HttpConnection httpConnection = null;
DataOutputStream httpDataOutput = null;
InputStream httpInput = null;
OutputStream fos=null;
int rc;
try {
httpConnection = new HttpConnectionFactory()
.getHttpConnection("http://faultcode.techvalens.net/PDF/DrawingSample.PDF");
rc = httpConnection.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
throw new IOException("HTTP response code: " + rc);
}
httpInput = httpConnection.openInputStream();
InputStream is = httpInput;
FileConnection fconn=(FileConnection)Connector.open("file:///SDCard/Test.txt",
Connector.READ_WRITE);
if(!fconn.exists())
fconn.create();
System.out.println(fconn.exists());
fos = new FileOutputStream( File.FILESYSTEM_PATRIOT, "Test.txt" );
// byte[] b = IOUtilities.streamToBytes(inp);
byte[] buffer = new byte[702];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
} catch (Exception ex) {
System.out.println("URL Error........" + ex.getMessage());
} finally {
try {
if (httpInput != null)
httpInput.close();
if (httpDataOutput != null)
httpDataOutput.close();
if (httpConnection != null)
httpConnection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
the above code i am using.
Please let me know what is my mistake.
THanx in advance...!!!
The task was basic but created an unforgettable concept for me. Below is the code now i am using, its the best if i need to download any type file from URL.
public void run(){
GetURLWebService _webService = new GetURLWebService(methodName,elecID,pdfType,performedBy,notes);
String pdfURL = _webService.getWebServiceData();
_pdfURL = pdfURL;
System.out.println("Download the pdf...!!!");
try {
int chunkIndex = 0;
int totalSize = 0;
/*
* File connection
*/
FileConnection file =(FileConnection)Connector.open(localFile);
if (!file.exists()) {
file.create();
}
file.setWritable(true);
OutputStream out = file.openOutputStream();
/*
* HTTP Connections
*/
String currentFile = _pdfURL + connectionType();
//log("Full URL: " + currentFile);
HttpConnection conn;
InputStream in;
int rangeStart = 0;
int rangeEnd = 0;
while (true) {
// log("Opening Chunk: " + chunkIndex);
conn = (HttpConnection) Connector.open(currentFile,
Connector.READ_WRITE, true);
rangeStart = chunkIndex * chunksize;
rangeEnd = rangeStart + chunksize - 1;
// log("Requesting Range: " + rangeStart +
// "-" + rangeEnd);
conn.setRequestProperty("Range", "bytes=" +
rangeStart + "-" + rangeEnd);
int responseCode = conn.getResponseCode();
if (responseCode != 200 && responseCode != 206)
{
// log("Response Code = " + conn.getResponseCode());
break;
}
// log("Retreived Range: " + conn.getHeaderField("Content-Range"));
in = conn.openInputStream();
int length = -1;
byte[] readBlock = new byte[256];
int fileSize = 0;
while ((length = in.read(readBlock)) != -1) {
out.write(readBlock, 0, length);
fileSize += length;
Thread.yield(); // Try not to get cut off
}
totalSize += fileSize;
// log("Chunk Downloaded: " + fileSize + " Bytes");
chunkIndex++; // index (range) increase
in.close();
conn.close();
in = null;
conn = null;
/*
* Pause to allow connections to close and other Threads
* to run.
*/
Thread.sleep(1000);
}
// log("Full file downloaded: " + totalSize + " Bytes");
out.close();
file.close();
// log("Wrote file to local storage");
} catch (Exception e) {
System.out.println(e.toString());
}
}
private String connectionType() {
switch (conn) {
case 1:
return ";deviceside=false";
case 2:
return ";deviceside=true;interface=wifi";
default:
return ";deviceside=true";
}
}

j2me openOutputStream stream already open

Im having difficulties with the HttpConnection posting data to my server. The first time everything goes well. The second time it says; 'Stream already open', but i close everything after the response.
Here is my code:
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.location.*;
import java.io.*;
class GetSnowheights
{
HttpConnection http = null;
QualifiedCoordinates q = null;
public String result = "Geen data";
private boolean running;
public GetSnowheights(QualifiedCoordinates q) {
try
{
/*
this.http = (HttpConnection)Connector.open("http://www.diamond4it.nl/bb/");
this.http.setRequestMethod(HttpConnection.POST);
this.http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
*/
//Internet.getInstance();
this.http = Internet.getConnection();
}catch(Exception err){
err.printStackTrace();
}
this.q = q;
this.result = "Running";
}
public void GetResult(){
StringBuffer sb = new StringBuffer();
this.result = "GetResult";
if(this.http != null){
OutputStream os = null;
InputStream is = null;
try
{
//Send request
os = this.http.openOutputStream();
String data = "lat=1&lng=1";
//String data = "lat=" + this.q.getLatitude() + "&lng=" + this.q.getLongitude();
os.write(data.getBytes());
os.flush();
os.close();
this.result = "dataSend";
//Check response and read data
int res = this.http.getResponseCode();
this.result = "Result: " + res;
if(res == 200){
is = this.http.openInputStream();
int ch;
// Check the Content-Length first
long len = this.http.getLength();
if(len!=-1) {
for(int i = 0;i<len;i++){
if((ch = is.read())!= -1){
sb.append((char)ch);
}
}
} else {
// if the content-length is not available
while ((ch = is.read()) != -1){
sb.append((char)ch);
}
}
is.close();
}
this.result = sb.toString();
}catch(Exception err){
//err.printStackTrace();
this.result = err.toString() + "\r\n" + err.getMessage();
}finally{
if(is != null){
try{
is.close();
}catch(Exception err){
err.printStackTrace();
}
}
if(os != null){
try{
//os.flush();
os.close();
}catch(Exception err){
err.printStackTrace();
}
}
/*
if(http != null){
try{
http.close();
}catch(Exception err){
err.printStackTrace();
}
}
*/
}
}else{
this.result = "No connection";
}
}
}
2 ideas:
Why have you commented out the http.close() in finally block? We should always close HttpConnections.
Don't you call GetResult() from several threads simultaneously? If yes, then make the method synchronized by adding synchronized keyword in its definition.
P.S. I find the design of the class a bit misleading. It's very easy to make a mistake by incorrect usage of it. I'd combine GetSnowheights and GetResult into the only synchronized method.

Download image in blackberry and display

I use following code to download jpg image and display in blackberry curve 8900 simulator. When I am trying to load my code, it strucks completely and stop responding. Please some one help me.
public DisplayBusinessDetail(String city,Business business)
{
AbsoluteFieldManager absoluteFieldManager = new AbsoluteFieldManager();
absoluteFieldManager.add(new BitmapField(connectServerForImage("http://www.mobileapples.com/Assets/Content/Wallpapers/Blackberry.jpg")),0,0);
add(absoluteFieldManager);
}
public static Bitmap connectServerForImage(String url) {
HttpConnection httpConnection = null;
DataOutputStream httpDataOutput = null;
InputStream httpInput = null;
int rc;
Bitmap bitmp = null;
try {
httpConnection = (HttpConnection) Connector.open(url);
rc = httpConnection.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
throw new IOException("HTTP response code: " + rc);
}
httpInput = httpConnection.openInputStream();
InputStream inp = httpInput;
byte[] b = IOUtilities.streamToBytes(inp);
EncodedImage hai = EncodedImage.createEncodedImage(b, 0, b.length);
return hai.getBitmap();
} catch (Exception ex) {
System.out.println("URL Bitmap Error........" + ex.getMessage());
} finally {
try {
if (httpInput != null)
httpInput.close();
if (httpDataOutput != null)
httpDataOutput.close();
if (httpConnection != null)
httpConnection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return bitmp;
}
Thank you in advance
You need to move the socket code off of the main UI event thread. Your code does the download on the UI thread, meaning no UI responsiveness while downloading the bytes.

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