testmove.java

《Java程序设计实践教程》代码

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

public class TestMove extends MIDlet implements CommandListener
{
 //设置舞台对象
 private Display display;
 //引入低级用户界面Canvas类
 private TestMoveCanvas testCanvas;
 private Command cmdExit , cmdStart;

 public TestMove()
 {
  //获取表演舞台
  display = Display.getDisplay(this);
  //设置"退出"命令
  cmdExit  = new Command("退出",Command.EXIT,1);
  //设置"开始游戏"命令
  cmdStart = new Command( "开始游戏", Command.OK,0);
  testCanvas=new TestMoveCanvas(this);
  testCanvas.addCommand(cmdExit);
  testCanvas.addCommand(cmdStart);
  //设置按键侦听
  testCanvas.setCommandListener(this);
 }

 protected void startApp()
 {
   //把对象放入舞台
   display.setCurrent(testCanvas);
 }

 public void commandAction(Command c,Displayable d)
 {
  //执行"退出"命令
  if (c==cmdExit)
	{
   	 destroyApp(true);
	 notifyDestroyed();
	}
  //"开始游戏"
  else if (c==cmdStart)
	{
		//控制游戏开始
     testCanvas.beginning(true);
	}
 }

 protected void pauseApp()
 {   	} 

 protected void destroyApp(boolean unconditional)
 {   	} 
}