flutter - 将时间戳差异转换为年、月和周

Question

我想在下面的代码中添加尽可能多的选项，以显示经过了多少时间。不是我有小时:分钟:秒......我在想年:月:周:小时:分钟:秒。这样的事情可能吗？

final currentTimestamp = Timestamp.now();
final timestamp = currentTimestamp.seconds;
final firestoreTimestamp = widget.timestamp;

final diff = timestamp - firestoreTimestamp.seconds;

timerSubscription = timerStream.listen((int newTick) {
  if (!mounted) return;
  setState(() {
    hoursStr = (((newTick + diff) / (60 * 60)) % 60)
        .floor()
        .toString()
        .padLeft(2, '0');
    minutesStr =
        (((newTick + diff) / 60) % 60).floor().toString().padLeft(2, '0');
    secondsStr = ((newTick + diff) % 60).floor().toString().padLeft(2, '0');
  });
})

Answer 1

我推荐time_machine包来实现这一点:

import 'package:time_machine/time_machine.dart';

void main() {
  final start = LocalDateTime(2012, 1, 1, 14, 0, 0);
  final end = LocalDateTime(2013, 3, 9, 16, 3, 4);

  final period = Period.differenceBetweenDateTime(start, end, PeriodUnits.allUnits);

  print("years: ${period.years}");
  print("months: ${period.months}");
  print("weeks: ${period.weeks}");
  print("days: ${period.days}");
  print("hours: ${period.hours}");
  print("minutes: ${period.minutes}");
  print("seconds: ${period.seconds}");
}