timerdemo_2.java

来自「《精通JAVA手机游戏与应用程序设计》随书光盘」· Java 代码 · 共 56 行

package TimerDemo;


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

public class TimerDemo_2 extends MIDlet  implements CommandListener{

	private MyTimerTask myTimerTask;
	private Timer myTimer;
	
	private StarCanvas star;
	private Command exitCommand;
	public TimerDemo_2() {		
		exitCommand = new Command("Exit", Command.EXIT, 1);
		star = new StarCanvas();
		star.addCommand(exitCommand);
		Display.getDisplay(this).setCurrent(star);
		
		myTimer = new Timer();
		myTimerTask = new MyTimerTask();
		
			myTimer.schedule(myTimerTask,50,100);
			
		
	}

	protected void startApp() {
	}

	protected void pauseApp() {
	}

	protected void destroyApp(boolean arg0) {
	}

	public void commandAction(Command c, Displayable d) {
		if (c == exitCommand) {			
			destroyApp(false);			
			notifyDestroyed();
		}
	}
	class MyTimerTask extends TimerTask{
		public void run(){
			if(star != null)
				star.repaint();	
			//this.cancel();
		}
	}
	
}