Display Image From URL in Blackberry

This code will give you the image from the url.

URLBitmapField post_img= new URLBitmapField(image_url);
add(post_img);


import net.rim.device.api.math.Fixed32;
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.system.EncodedImage;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.BitmapField;
public class URLBitmapField extends BitmapField implements URLDataCallback {
EncodedImage result = null;
public static EncodedImage _encoded_img = null;

int _imgWidth = 52;
int _imgHeight = 62;
int _imgMargin = 10;

public URLBitmapField(String url) {
try {
http_image_data_extrator.getWebData(url, this);
}
catch (Exception e) {}
}

public Bitmap getBitmap() {
if (_encoded_img == null) return null;
return _encoded_img.getBitmap();
}

public void callback(final String data) {
if (data.startsWith("Exception")) return;

try {
byte[] dataArray = data.getBytes();

_encoded_img = EncodedImage.createEncodedImage(dataArray, 0, dataArray.length); // with scale
_encoded_img = sizeImage(_encoded_img, _imgWidth, _imgHeight);

             setImage(_encoded_img);
UiApplication.getUiApplication().getActiveScreen().invalidate();
}
catch (final Exception e){}
}

public EncodedImage sizeImage(EncodedImage image, int width, int height) {


int currentWidthFixed32 = Fixed32.toFP(image.getWidth());
int currentHeightFixed32 = Fixed32.toFP(image.getHeight());

int requiredWidthFixed32 = Fixed32.toFP(width);
int requiredHeightFixed32 = Fixed32.toFP(height);

int scaleXFixed32 = Fixed32.div(currentWidthFixed32,
requiredWidthFixed32);
int scaleYFixed32 = Fixed32.div(currentHeightFixed32,requiredHeightFixed32);

result = image.scaleImage32(scaleXFixed32, scaleYFixed32);
return result;
}

 }



public interface URLDataCallback {

public void callback(String data);

}




import java.io.IOException;
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import net.rim.device.api.system.RadioInfo;
import net.rim.device.api.system.WLANInfo;
import net.rim.device.api.ui.UiApplication;

public class http_image_data_extrator {
static String url_="";
static StringBuffer rawResponse=null;

public static void getWebData(String url, final URLDataCallback callback) throws IOException {
         
HttpConnection connection = null;
InputStream inputStream = null;

try {
                  if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)&& RadioInfo.areWAFsSupported(RadioInfo.WAF_WLAN)) {
url += ";interface=wifi";
   }
            connection = (HttpConnection) Connector.open(url, Connector.READ, true);

String location=connection.getHeaderField("location");
            if(location!=null){


           if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)&& RadioInfo.areWAFsSupported(RadioInfo.WAF_WLAN)) {
location += ";interface=wifi";
}
           connection = (HttpConnection) Connector.open(location, Connector.READ, true);

          }else{
          connection = (HttpConnection) Connector.open(url, Connector.READ, true);
}


inputStream = connection.openInputStream();
byte[] responseData = new byte[10000];
int length = 0;
rawResponse = new StringBuffer();
while (-1 != (length = inputStream.read(responseData))) {
rawResponse.append(new String(responseData, 0, length));
}
int responseCode = connection.getResponseCode();
if (responseCode != HttpConnection.HTTP_OK){
throw new IOException("HTTP response code: "+ responseCode);
}

final String  result = rawResponse.toString();
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run(){
callback.callback(result);
}
});
}
catch (final Exception ex) {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
callback.callback("Exception (" + ex.getClass() + "): " + ex.getMessage());
}
});
}
}

}