How to get bitmap from URL in Blackberry

Question

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 ?.

How to get bitmap from URL in Blackberry. Blackberry is using java language. and i put the link what i tried. — , Mar 20 '12 at 14:21
do you mean, you just want to display a .bmp loaded from that URL? — thecoshman, Mar 20 '12 at 14:22
HTTP response code `302` is a redirection to another URL. The HTTP response's `Location` header contains the new URL to go to. — Remy Lebeau, Mar 20 '12 at 22:10

score 0 · Answer 1 · edited Dec 16 '12 at 18:18

//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);

Rince Thomas · Accepted Answer · 2012-03-21T05:37:52.350

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;
    }

@Signare: you are using a `StringBuffer` to receive binary data, just to convert it back to aa binary `byte[]` array, why? The connection's `InputStream` reads the raw binary data, using a `String` is overkill. I would use `HttpConnection.getLength()` to get the binary data length, allocate a `byte[]` of that length, and then `read()` directly into it. The documentation for `HttpConnection` even shows an example of doing exactly that. — Remy Lebeau, Mar 21 '12 at 06:22
@Signare: You are also re-opening the same URL again if no `Location` header is present. That is not necessary. — Remy Lebeau, Mar 21 '12 at 06:23

score 0 · Answer 3 · answered Mar 21 '12 at 06:46

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.

How to get bitmap from URL in Blackberry

3 Answers3