Javaのタイマーで一時停止＆再開

ScheduledFuture とScheduledExecutorService
http://ameblo.jp/vegetable-it/entry-11245144566.html

Androidで一時停止はonPause()、再会するときはonRestart()を呼ぶ。(onResume()だとうまくいかなかった)

package com.example.timertest;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;

public class MainActivity extends Activity {
	HogeTimerTask timerTask;
	ScheduledFuture future;
	ScheduledExecutorService scheduler;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		timerTask = new HogeTimerTask();
		scheduler = Executors.newSingleThreadScheduledExecutor();
		future = scheduler.scheduleAtFixedRate(timerTask, 0, 1000, TimeUnit.MILLISECONDS);
	}
	class HogeTimerTask implements Runnable {
		@Override
		public void run() {
			Log.e("TAG", "hogehoge timer task activated.");
		}
	}
	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
		Log.e("STOP","Timer schedule stopped.");
		future.cancel(true);
	}
	@Override
	protected void onRestart() {
		// TODO Auto-generated method stub
		super.onRestart();
		future = scheduler.scheduleAtFixedRate(timerTask, 0, 1000, TimeUnit.MILLISECONDS);
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
}