help creating transparent image

[Jeff]

midp 2.0
Java SE 5.0
J2ME version 2.2

This code creates an image with white background with circle filled with a
light green color:
Image image = Image.createImage(60,60);
Graphics s = image.getGraphics();
s.setColor(0xCCFFCC);
s.fillArc(0, 0, 60, 60, 90, 360);

But I don't want the white background, I want the background to be
transparent... This image is put into a sprite and displayed on the screen.
And I very much would like to remove the white background of the image
object - it would greatly improve the layout...

This image is created during program execution... so I cannot fix this using
Photoshop or any other image edititing software

So please come with suggestions on how to make the white background
transparent

Jeff

 

[Remon van Vliet]

You can create images with alpha support using BufferedImage and such. I'm
not aware of MIDP supporting (partially) transparent images created in code
without a bit of a workaround. Said workaround involves creating a PNG
compatible byte[] from your original pixel data and pass it to
createImage(byte[] imageData);

Remon van Vliet