Android获取验证码时的倒计时 CountDownTimer使用

[code]/* 定义一个倒计时的内部类 */
    class TimeCount extends CountDownTimer {
        public TimeCount(long millisInFuture, long countDownInterval) {
            super(millisInFuture, countDownInterval);// 参数依次为总时长,和计时的时间间隔
        }

        @Override
        public void onFinish() {// 计时完毕时触发
            tel_regist_getyzm.setText("重新验证");
            tel_regist_getyzm.setClickable(true);
        }

        @Override
        public void onTick(long millisUntilFinished) {// 计时过程显示
            tel_regist_getyzm.setClickable(false);
            tel_regist_getyzm.setText(millisUntilFinished / 1000 + "秒");
        }
    }

[code]TimeCount   time=new TimeCount(60000, 1000);// 参数依次为总时长,和计时的时间间隔
        b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                time.start();
            }
        });
    }