welcome.java

手机动态密码产生器

package dynamicP;

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


public class Welcome extends Canvas {
    private int width;
    private int height;
    private Image imgU;

    public Welcome(String bigPic, String smallPic) {
        width = this.getWidth();
        height = this.getHeight();

        try {
            Image img;

            if(width > 150) {
                img = Image.createImage(bigPic);
            } else {
                img = Image.createImage(smallPic);
            }

            imgU = Image.createImage(width, height);

            Graphics g = imgU.getGraphics();
            g.drawImage(img, width / 2, height / 2, Graphics.HCENTER | Graphics.VCENTER);
        } catch(Exception e) {
            System.out.println(10000);
        }
    }

    protected void paint(Graphics g) {
        g.drawImage(imgU, 0, 0, Graphics.LEFT | Graphics.TOP);
    }
}