notifydemo.java

来自「J2ME手机游戏开发技术详解随书光盘」· Java 代码 · 共 41 行

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class notifyDemo extends MIDlet {	
    private Display display;
    public notifyDemo() {
        display=Display.getDisplay(this);
    }
    public void startApp() throws MIDletStateChangeException {
        display.setCurrent(new notifyDemoCanvas());
    }
    public void pauseApp() {
    }
    public void destroyApp(boolean unconditional) {
    }
    class notifyDemoCanvas extends Canvas {
        int width, height;
        int deltaX, deltaY;
        int x,y;
        
        public notifyDemoCanvas() {      
            width = getWidth();
            height = getHeight();
        }
        public void paint(Graphics g) {         
            System.out.println("this is paint");
            System.out.println("canvas is shown?"+isShown());
            g.setColor(0xFFFFFF);
            g.fillRect(0,0,width,height);
         }
        protected void showNotify(){
        	System.out.println("this is showNotify");
        	System.out.println("canvas is shown?"+isShown());
        }
        protected void hideNotify(){
        	System.out.println("this is hideNotify");
        	System.out.println("canvas is shown?"+isShown());
        }
    }
}