j2me中如何制作透明图像

Question

有人知道，如何制作具有完全不透明图像背景的透明图像吗？

请帮助我...

Answer 1

希望有

Image transPNG=Image.createImage("/trans.png");  //load the tranparent image or opaque image
int rgbData[];
transPNG.getRGB(rgbData, 0,transPNG.getWidth(), 0, 0,transPNG.getWidth(), transPNG.getHeight());
Image tranparentImage==Image.createRGBImage(rgbData, width, height, true); //process alpha (true) for opaque false
transPNG=null;

帮助

Answer 2

我想这将是你的解决方案！

图像图像，半图像；

public Design() {
    try {

        image = Image.createImage("asc.png");
        int w = image.getWidth();
        int h = image.getHeight();
        int rgb[] = new int[w * h];

        for (int i = 0; i < w * h; i++) {
            rgb[i] = 0x50999999;
        }

        semi = Image.createRGBImage(rgb, w, h, true);


    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

protected void paint(Graphics g) {
        g.setGrayScale(255);
        g.setColor(0xFF0000);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.drawImage(image, 50, 150, Graphics.TOP|Graphics.LEFT);
        g.drawImage(semi, 60, 160, Graphics.BOTTOM|Graphics.LEFT);
}