如何在Java emulator中每秒更新时间？

我一直在为一个应用程序编写代码，但在运行代码时，我没有时间在模拟器中进行更新。代码在编译器中工作，但在仿真器中不工作。 如有任何有益的建议，将不胜感激。计时器是圣诞节的倒计时。 这是我的密码：

Calendar today = Calendar.getInstance();
Calendar thatDay = Calendar.getInstance();
thatDay.set(Calendar.DAY_OF_MONTH, 25);
thatDay.set(Calendar.MONTH, 11); // 0-11 so 1 less
thatDay.set(Calendar.YEAR, 2014);
thatDay.set(Calendar.HOUR, 0);
thatDay.set(Calendar.MINUTE, 0);
thatDay.set(Calendar.SECOND, 0);
thatDay.set(Calendar.AM_PM, 0);

System.out.println(thatDay.getTime());

ScheduledExecutorService scheduledExecutorService= 

Executors.newScheduledThreadPool(1);
scheduledExecutorService.scheduleAtFixedRate(new ReadThisPeriod(thatDay), 0, 1,  
TimeUnit.SECONDS);

long diff = (thatDay.getTimeInMillis() - today.getTimeInMillis()) / 1000;
long days = diff / (60 * 60 * 24);
long hours = diff / (60 * 60) % 24;
long minutes = diff / 60 % 60;
long seconds = diff % 60;

TextView daysBox = (TextView) findViewById(R.id.s1Days);

daysBox.setText(" + "" + days + "" + hours + "" + minutes + " " + seconds + " ");

---

让事情变得非常简单，我会删除所有遗嘱执行人的东西，然后做一些类似的事情：

TextView daysBox = (TextView) findViewById(R.id.s1Days);

// We create a runnable that will re-call itself each second to update time
Runnable printDaysToXmas=new Runnable() {

   @Override
   public void run() {
      Calendar today = Calendar.getInstance();
      long diff = (thatDay.getTimeInMillis() - today.getTimeInMillis()) / 1000;
      long days = diff / (60 * 60 * 24);
      long hours = diff / (60 * 60) % 24;
      long minutes = diff / 60 % 60;
      long seconds = diff % 60;

      daysBox.setText(" + "" + days + "" + hours + "" + minutes + " " + seconds + " ");

      // we call this runnable again in 1000ms (1 sec)
      daysBox.postDelayed(printDaysToXmas, 1000); // all views have a Handler you can use ;P
   }
};

。。。要开始这个过程，只需

printDaysToXmas.run();

。。。为了阻止它，你可以

daysBox.removeCallbacks(printDaysToXmas);

还有一些小补充来回答。你可以用

DateUtils.getRelativeTimeSpanStringlong time，long now，long minResolution

简化数学，为用户提供更多用户可读的字符串