toString function

String toString(
  1. Duration duration
)

将 Duration 转换为形如 102:10:04 格式的字符串 此函数和 Duration toString 不同在于忽略秒以后的数值

toString(Duration(seconds: 100)) == '01:40'

Implementation

String toString(Duration duration) {
  final sign = duration.inSeconds < 0 ? '-' : '';
  var hours = '';

  final h = duration.inHours.abs();
  if (h > 0) hours = '$h:';

  final twoDigitMinutes =
      _twoDigits(duration.inMinutes.remainder(Duration.minutesPerHour).abs());
  final twoDigitSeconds =
      _twoDigits(duration.inSeconds.remainder(Duration.secondsPerMinute).abs());
  return '$sign$hours$twoDigitMinutes:$twoDigitSeconds';
}