timertaskmanager.java

手机电子书阅读软件基本框架

/********************************************************************
 * ��Ŀ���				 
 * 版权说明，此程序仅供学习参考。不能用于商业
 * 
 ********************************************************************/
package org.pook.ui.timer;

import java.util.Timer;
import java.util.TimerTask;

/**
 * <b>����TimerTaskManager.java</b> </br> �����: 2006-9-12 <br/> ����������
 * <br/> Demo: <br/> Bug: <br/>
 * 
 * ���������� ��<br/> ������� ��<br/> ���˵�� ��<br/>
 * 
 * @author wuhua </br> <a href="mailto:[e-mail]">[e-mail]</a>
 */
public class TimerTaskManager {
	private Timer _timer;

	static TimerTaskManager instace;

	public static TimerTaskManager getInstace() {
		if (instace == null)
			instace = new TimerTaskManager();
		return instace;
	}

	public TimerTask add(Runnable runnable, long period) {
		TimerTask task = new RunnableTimerTask(runnable);
		long delay = period;
		getTimer().schedule(task, delay, period);
		return task;
	}

	void close() {
		if (_timer != null) {
			_timer.cancel();
			_timer = null;
		}
	}

	private Timer getTimer() {
		if (_timer == null)
			_timer = new Timer();
		return _timer;
	}

	static class RunnableTimerTask extends TimerTask {
		private Runnable _runnable;

		RunnableTimerTask(Runnable runnable) {
			_runnable = runnable;
		}

		public void run() {
			_runnable.run();
		}
	}
}