Android学习之路——前言_JAVA_编程开发_程序员俱乐部

Xzz.getXzz().learnAndroid("learn Android for you");

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

import android.os.Handler;
import android.os.Message;

/**
 * 
 * @author xzz
 */
public class Xzz {

	private static Xzz xzz;

	private Handler hander = new Handler() {

		@Override
		public void handleMessage(Message msg) {

			String purpose = (String) msg.obj;
			if (purpose.equals("learn Android for you")) {
				xzz.studyHard();
			}
		}
	};

	private Xzz() {

	}

	public synchronized static Xzz getXzz() {

		if (xzz == null) {
			xzz = new Xzz();
		}
		return xzz;
	}

	public void learnAndroid(String purpose) {

		if (xzz == null)
			return;
		Message message = new Message();
		message.obj = purpose;
		message.setTarget(hander);
		message.sendToTarget();
	}

	private void studyHard() {

		System.out.println("learn Android");
		Timer timer = new Timer();
		timer.schedule(new TimerTask() {

			@Override
			public void run() {
				studyHard();// Never end
			}
		}, 24 * 60 * 60 * 1000);
	}
}