midlet1.java

这是郭克华老师的J2ME视频的源代码

package prj12_1;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet1 extends MIDlet {
	private MyCanvas mc = new MyCanvas();
	private Display dis;
	protected void startApp() throws MIDletStateChangeException {
		dis = Display.getDisplay(this);
		mc.setTitle("MyCanvas");
		mc.setFullScreenMode(true);
		dis.setCurrent(mc);
		mc.addCommand(new Command("命令",Command.SCREEN,1));
		//dis.setCurrent(new Form("Form"));

	}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}


	
	class MyCanvas extends Canvas{
		public void paint(Graphics g){//画图函数，必须重写，画布出现后自动调用
			System.out.println("paint");
		}
		public void showNotify(){//重写,画布放在界面最前端显示时自动调用
			System.out.println("showNotify");
		}
		public void hideNotify(){//重写，画布隐藏时自动调用
			System.out.println("hideNotify");
		}
	}

}