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Old 12-29-2008, 12:26 AM   #1 (permalink)
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Default Image Thumbnailing Issue.

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Hi All,

I developed an application using J2me for creating thumbnails of images. I used this application on Blackberry 8100, 8300 and 8800 devices, It makes proper thumbnail of image (where Image size is 10~50 KB).

While trying to create thumbnails of images (where Image size is 10~20 KB), the same code for Blackberry-Bold throws OutOfMemory exception . It only create thumbnails of size 5~7 KB images.

I need your expertise to resolve this problem. I want to use J2me code only that also works for Blackberry-Bold.

Here i am adding some part of J2me code that creates thumbnail.

public static Image getThumbnail(Image img, int intScreenWidth, int intScreenHeight) {

// Declaration
Image imgThumb = null;
Image imgImmutableThumb = null;
// getting original width
int intImageWidth;
// getting original height.
int intImageHeight;
try {
intImageWidth = img.getWidth();
// getting original height.
intImageHeight = img.getHeight();
// now getting the thumb image
imgThumb = Image.createImage(intScreenWidth, intScreenHeight);
if (imgThumb != null) {
Graphics g = imgThumb.getGraphics();
for (int y = 0; y < intScreenHeight; y++) {
for (int x = 0; x < intScreenWidth; x++) {
g.setClip(x, y, 1, 1);
int deltaX = x * intImageWidth / intScreenWidth;
int deltaY = y * intImageHeight / intScreenHeight;
g.drawImage(img, x - deltaX, y - deltaY,
Graphics.LEFT | Graphics.TOP);
}// end of for (int x = 0; x < intScreenWidth; x++)
}// end of for (int y = 0; y < intScreenHeight; y++)
// imgImmutableThumb = Image.createImage(imgThumb);
} else {
imgThumb = img;

} catch (OutOfMemoryError ome) {

} catch (Exception e) {
} finally {

}// end of try catch finally.
return imgThumb;
}// end of getThumbnail

It throws exception from Image.createImage().

Please reply me as soon as possible.

Thanks in advance.
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