java - Android 倒计时器 : Add Hour

Question

在倒计时器中添加小时，我只有几分钟的时间，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);