郭克华手机编程教学视频----我的练习源码(4)命令按钮监听1：使用匿名类实现

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package lession3;

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.*;

/**
* 命令按钮监听1：使用匿名类实现
* @author mouyong
*/
public class ListenerMidlet1 extends MIDlet {
private Form frm=new Form("这是一个Form");
private Display dis=null;
private Command cmd1=new Command("命令按钮",Command.SCREEN,1);
public void startApp() {
dis=Display.getDisplay(this);
dis.setCurrent(frm);

frm.addCommand(cmd1);

//事件监听步骤
//1:编写事件监听类CommandListener
//2:重写CommandListener的CommandAction()的方法
//3：使用Displayable.setCommandLister()方法，注册监听
frm.setCommandListener(new CommandListener(){//匿名类实现
//参数c：发出命令的按钮
//参数d：发出命令的界面
public void commandAction(Command c, Displayable d) {
System.out.println("HelloWorld"+c);

}

});
}

public void pauseApp() {
}

public void destroyApp(boolean unconditional) {
}
}