Android 倒数计时器：添加小时

Question

在倒数计时器中添加小时数，我只有几分钟然后如何格式化它

 private void updateCountDownText() {

        int hours = (int) (mTimeLeftInMillis / 1000) / 36000;

        int minutes = (int) (mTimeLeftInMillis / 1000) / 60;

        int seconds = (int) (mTimeLeftInMillis / 1000) % 60;

        String timeLeftFormatted = String.format(Locale.getDefault(), "%02d:%02d:%02d", hours, minutes, seconds);

        mTextViewCountDown.setText(timeLeftFormatted);

    }

Answer 1

我建议使用TimeUnit而不是手动转换时间。试试这个：int hours = TimeUnit.MILLISECONDS.toHours(mTimeLeftInMillis);int minutes = TimeUnit.MILLISECONDS.toMinutes(mTimeLeftInMillis) % TimeUnit.HOURS.toMinutes(1);int seconds = TimeUnit.MILLISECONDS.toSeconds(mTimeLeftInMillis) % TimeUnit.MINUTES.toSeconds(1);String timeLeftFormatted = String.format(Locale.getDefault(), "%02d:%02d:%02d", hours, minutes, seconds);mTextViewCountDown.setText(timeLeftFormatted);