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POLoad Image from Image URL taking so much time to display
 

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  1. POLoad Image from Image URL taking so much time to display
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    <p>I used the code from the following link: <a href="http://rincethomas.blogspot.in/2012/04/display-image-from-url-in-bb.html"><strong>Signare's Blog</strong></a>. I have 10 image URLs and would like to retrieve and show them on my screen. When I use the code from the above link, it's taking more than 10 minutes to load all of the images. How do I speed up this loading?</p> <pre><code>URLBitmapField post_img= new URLBitmapField(image_url); add(post_img); </code></pre> <p>where the class <code>URLBitmapField</code> is defined as:</p> <pre><code>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); } </code></pre> <p>and the class <code>http_image_data_extrator</code> is defined as:</p> <pre><code>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)&amp;&amp; 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)&amp;&amp; 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()); } }); } } } </code></pre>
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    1. PTQuestion
    1. USw5m
    1. USSignare
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    1. PL
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    1. This table or related slice is empty.
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      1. POLoad Image from Image URL taking so much time to display
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      1. VTUpMod
    2. VO
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      1. POLoad Image from Image URL taking so much time to display
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      1. VTUpMod
    3. VO
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      1. POLoad Image from Image URL taking so much time to display
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    1. COuse database in ur app insert those images in ur DB
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      1. POLoad Image from Image URL taking so much time to display
      1. USRaj Kamal
    2. COthat is not possible..@RajKamal
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      1. POLoad Image from Image URL taking so much time to display
      1. USSignare
    3. COImean insert image path
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      1. POLoad Image from Image URL taking so much time to display
      1. USRaj Kamal
 

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