嗨，我正在做一个简单的倒计时计时器，我想在暂停后恢复它。对我来说非常重要的是我不会把我的倒计时计时器放到public void方法中。

mTextViewCountDown = findViewById(R.id.text_view_countdown);
    mButtonStartPause = findViewById(R.id.button_start_pause);
    mButtonStartPause.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (mTimerRunning) {
                pauseTimer();
            } else {
                startTimer();
            }
        }
    });
   updateCountDownText();
    mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            mTimeLeftInMillis = millisUntilFinished;
            updateCountDownText();
        }
        @Override
        public void onFinish() {
           mTimerRunning = false;
        }
    }.start();
}
private void startTimer() {

    mTimerRunning = true;
    mCountDownTimer.start();
}
private void pauseTimer() {
    mCountDownTimer.cancel();
    mTimerRunning = false;
    mButtonStartPause.setText("Start");
}
private void updateCountDownText() {
    int minutes = (int) (mTimeLeftInMillis / 1000) / 60;
    int seconds = (int) (mTimeLeftInMillis / 1000) % 60;
    String timeLeftFormatted = String.format(Locale.getDefault(), "%02d:%02d", minutes, seconds);
    mTextViewCountDown.setText(timeLeftFormatted);
}