动态八卦图在手机中

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

/**
 * @author user
 */
public class Midlet extends MIDlet {

    private RunBagua runBagua;
    public Midlet(){
        runBagua=new RunBagua();
    }
    public void startApp() {
        Display.getDisplay(this).setCurrent(runBagua);

    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
}



import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;

public class RunBagua extends Canvas implements Runnable {
    int[] sin = {0,
            1736,
            3420,
            4999,
            6427,
            7660,
            8660,
            9396,
            9848,
            10000,
            9848,
            9396,
            8660,
            7660,
            6427,
            4999,
            3420,
            1736,
            0,
            -1736,
            -3420,
            -4999,
            -6427,
            -7660,
            -8660,
            -9396,
            -9848,
            -10000,
            -9848,
            -9396,
            -8660,
            -7660,
            -6427,
            -5000,
            -3420,
            -1736};
    int[] cos = {10000,
            9848,
            9396,
            8660,
            7660,
            6427,
            5000,
            3420,
            1736,
            0,
            -1736,
            -3420,
            -4999,
            -6427,
            -7660,
            -8660,
            -9396,
            -9848,
            -10000,
            -9848,
            -9396,
            -8660,
            -7660,
            -6427,
            -5000,
            -3420,
            -1736,
            0,
            1736,
            3420,
            5000,
            6427,
            7660,
            8660,
            9396,
            9848};
    int width;//屏幕的宽
    int height;//屏幕的高
    int R = 40;//八卦图的半径的一半，即鱼头的半径
    int centerY;//八挂图的圆心Y坐标
    int centerX;//八挂图的圆心x坐标
    int[] cTempX = new int[36];
    int[] cTempY = new int[36];
    public RunBagua() {
        width = this.getWidth();
        height = this.getHeight();
        centerX = width / 2;
        centerY = height / 2;
        for (int i = 0; i < 36; i++) {
            cTempX[i] = centerX + R * cos[i] / 10000;
            cTempY[i] = centerY - R * sin[i] / 10000;
        }
        new Thread(this).start();
    }
    int m = 9;
    int m1 = 27;
    protected void paint(Graphics g) {
        g.setColor(255, 255, 255);
        g.fillRect(0, 0, width, height);//刷屏

        int xL1 = cTempX[m] - R;
        int yL1 = cTempY[m] - R;
        int xL3 = cTempX[m1] - R;
        int yL3 = cTempY[m1] - R;
        int start1 = m * 10;
        int end1 = 180;
        int start3 = m1 * 10;
        int end3 = 180;
        g.setColor(0, 0, 0);
        g.drawArc(centerX-2*R, centerY-2*R, 4*R, 4*R, 0, 360);//画边缘边界

        g.fillArc(centerX-2*R, centerY-2*R, 4*R, 4*R, start1, end1);//画黑色半圆
        g.setColor(255, 255, 255);
        g.fillArc(centerX-2*R, centerY-2*R, 4*R, 4*R, start3, end3);//画白色半圆
        g.setColor(0, 0, 0);
        g.fillArc(xL3, yL3, 2 * R, 2 * R, start3, end3);//画黑色鱼头
        g.setColor(255, 255, 255);
        g.fillArc(xL1, yL1, 2 * R, 2 * R, start1, end1);//画白色鱼头
        g.fillArc(xL3+R-5, yL3+R-5, 10, 10, 0, 360);//画小白鱼眼
        g.setColor(0, 0, 0);
        g.fillArc(xL1+R-5, yL1+R-5, 10, 10, 0, 360);//画小黑鱼眼

    }
    /*
     * 改变数据让八卦图动起来
     *
     */
    public void update(){
        m = ++m > 35 ? 0 : m;
        m1 = ++m1 > 35 ? 0 : m1;
    }
    public void run() {
        while (true) {
            update();
            repaint();
            try {
                Thread.sleep(100);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
        }
    }
}

程序效果图见本人相册