Android基础之CountDownTimer 倒计时类

app常用的60s倒计时计时功能：

private static final int TIME_LIMIT = 60;

    private void initView() {
        // 相关控件
        mResend = (TextView) findViewById(R.id.resend); // 重新发送btn
        mResend.setOnClickListener(this);
        mTimeLimit = (TextView) findViewById(R.id.time_limit); // 倒计时秒数显示
        countDown(); // 开始倒计时
    }

利用android的倒计时类CountDownTimer：

private void countDown() {
        mResend.setActivated(false);
        mResend.setTextColor(getResources().getColor(R.color.trans_black_26));
        
        new CountDownTimer(TIME_LIMIT * 1000, 1000) {
            
            @Override
            public void onTick(long millisUntilFinished) {
                mTimeLimit.setVisibility(View.VISIBLE);
                mTimeLimit.setText(--reduceLen + "秒");// 实时显示秒数递减
            }
            
            @Override
            public void onFinish() {
                mTimeLimit.setVisibility(View.INVISIBLE);
                mResend.setActivated(true);
                mResend.setTextColor(getResources().getColor(R.color.trans_black_54));
            }
        }.start();
    }