mycanvasmidlet.java

来自「<j2me 开发精解> 詹建光著 里所有的源码。对J2me的开发相当」· Java 代码 · 共 33 行

package com.j2medev.sample.chapter3;

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

public class MyCanvasMidlet extends MIDlet {
    
    private Canvas canvas = new MyCanvas();
    private Display display = null;
    
    public void startApp() {
        if(display==null) {
            display = Display.getDisplay(this);
            display.setCurrent(canvas);
        }
    }
    
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
    
    class MyCanvas extends Canvas {
        protected void paint(Graphics g) {
            g.setColor(0xffffff);
            g.fillRect(0, 0, getWidth(), getHeight());
            g.setColor(0);
            g.drawString("欢迎使用Canvas", getWidth()/2, getHeight()/2, Graphics.HCENTER|Graphics.TOP);
        }
    }
}