简单Android倒计时实现

class CountDown extends CountDownTimer
{
public CountDown(long millisInFuture, long countDownInterval)
{
super(millisInFuture, countDownInterval);
}

@Override
public void onFinish()
{
mShowTest.setText("finish");
}

@Override
public void onTick(long millisUntilFinished)
{
mShowTest.setText("0" + millisUntilFinished / 60000 + ":" + (millisUntilFinished % 60000 /1000) + ":" + (millisUntilFinished % 60000 % 100));
}
}

CountDown mCountDown = new CountDown (3 * 60 * 1000, 10);
mCountDown .start();