相关疑难解决方法(0)

这是一个倒数计时器,我想在几分钟和几秒钟内打印.ex(300000mili)5分钟,计数4:60,4:59 ......这是我的代码的一部分

final MyCounter timer = new MyCounter(300000,1000);
    blue.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            timer.start();
        }
    });
}
public class MyCounter extends CountDownTimer {

    public MyCounter(long millisInFuture, long countDownInterval) {
        super(millisInFuture, countDownInterval);
    }

    @Override
    public void onFinish() {
        blue.setText("Live");
    }

    @Override
    public void onTick(long millisUntilFinished) {
        blue.setText((millisUntilFinished/60000)+":"+(millisUntilFinished/5000));
        // i tried this
    }
}

如何在失踪20秒后振动？什么时候结束？谢谢,抱歉我的英语不好