J2ME 游戏开发之颜色设置

1. J2ME开发的限制

   

    2. 不支持线程组和守护线程

2. 颜色设置

public class ColorCanvas extends Canvas{

    protected void paint(Graphics g) {
        // TODO Auto-generated method stub
        //g.setColor(250,250,0);
        //设置颜色  0xARGB
        g.setColor(0x10ffff00);
        
        //绘制一个矩形
        g.fillRect(0, 0, getWidth(), getHeight());
        
        //获得颜色值
        int c = g.getColor();
        
        int dc = g.getDisplayColor(c);
        
        System.out.println("当前画面的颜色为：" + Integer.toHexString(c));
        
        System.out.println("当前画面的R值：" + g.getRedComponent());
        
        System.out.println("当前画面显示的颜色为：" + Integer.toHexString(dc));
        
        System.out.println("当前画面显示的灰度为：" + g.getGrayScale());
    }

}