getWeekday static method

String? getWeekday(
  1. DateTime? dateTime
)

获取周几

Implementation

static String? getWeekday(DateTime? dateTime) {
  if (dateTime == null) return null;
  String weekday = switch (dateTime.weekday) {
    1 => '星期一',
    2 => '星期二',
    3 => '星期三',
    4 => '星期四',
    5 => '星期五',
    6 => '星期六',
    7 => '星期日',
    _ => '',
  };
  return weekday;
}