Android动态显示具体到秒的相聚时间

@Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);     setContentView(R.layout.activity_main);    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);    setSupportActionBar(toolbar);     //初始化控件    info();     //立即调用该方法    handler.post(runnable);  }   //立即调用方法    Handler handler = new Handler();    Runnable runnable=new Runnable() {      @Override      public void run() {        handler.postDelayed(runnable,1000);        //计算相恋时间        culLoveDate();      }    };   //初始化控件  private void info() {    tvLoveDays= (TextView) findViewById(R.id.tvLoveDays);    tvLoveHoursMinutesSeconds= (TextView) findViewById(R.id.tvLoveHoursMinutesSeconds);  }   //计算相恋时间  private void culLoveDate() {    SimpleDateFormat dfs=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");    long between = 0;    try {      Date begin = dfs.parse("2015-04-11 09:09:09"); //设置开始计算时间      Date end = new Date(System.currentTimeMillis());//获取当前时间      between = (end.getTime() - begin.getTime());// 得到两者的秒数    } catch (Exception ex) {      ex.printStackTrace();    }    long day = between / (24 * 60 * 60 * 1000);    long hour = (between / (60 * 60 * 1000) - day * 24);    long min = ((between / (60 * 1000)) - day * 24 * 60 - hour * 60);    long sec = (between / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);    String loveDays="已相恋："+day+"天";    String loveHoursMinutesSeconds=hour+"时"+min+"分"+sec+"秒";    tvLoveDays.setText(loveDays);    tvLoveHoursMinutesSeconds.setText(loveHoursMinutesSeconds);  }