midlet1.java

这是郭克华老师的J2ME视频的源代码

package prj3_1;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MIDlet1 extends MIDlet {

	private Form frm = new Form("这是一个Form");
	private Display dis;
	private Command cmd1 = new Command("命令按钮",Command.SCREEN,1);
	
	public MIDlet1() {
		// TODO Auto-generated constructor stub
	}
	protected void startApp() throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		dis = Display.getDisplay(this);
		dis.setCurrent(frm);
		
		frm.addCommand(cmd1);
		
		//Step3:绑定frm和CommandOpe对象
		frm.setCommandListener(new CommandOpe());
	}	
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		
	}
	protected void pauseApp() {
		// TODO Auto-generated method stub
	}
}
class CommandOpe implements CommandListener{//Step1:事件响应类，实现CommandListener
	//Step2:必须重写commandAction函数,在里面写响应代码
	public void commandAction(Command c,Displayable d){
		System.out.println("按钮被选择");
	}
}