淘宝怎么倒计时抢购,淘抢购倒计时不准

private Runnable timeRunnable = new Runnable() { @Override
public void run() {
toDataCount();
} };private void toDataCount() {
SimpleDateFormat df = new SimpleDateFormat("MM-dd HH:mm:ss");

try {
String date = df.format(new Date());
Date d2 = df.parse(date);//系统时间
Date d1 = df.parse(AppConfig.getTmLongToStr_(gameInfo.getStartDateUnix() * 1000));//服务器获取时间
long diff = d1.getTime() - d2.getTime();//这样得到的差值是微秒级别

long days = diff / (1000 * 60 * 60 * 24);
long hours = (diff - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
long minutes = (diff - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60);
long second = (diff - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60) - minutes * (1000 * 60)) / 1000; if (days <= 0 && hours <= 0 && minutes <= 0 & second <= 0) {
time_tv.setText(hours + ":" + minutes + ":" + second);
handler.removeCallbacks(timeRunnable);
} else {
time_tv.setText(hours + ":" + minutes + ":" + second);
handler.postDelayed(timeRunnable, 1000);
}

} catch (Exception e) {
}
} handler.post(timeRunnable);//调用倒计时