format static method

String format(int millisecondsSinceEpoch, { bool dayOnly = true, })

Implementation

static String format(int millisecondsSinceEpoch, {bool dayOnly = true}) {
  //当天日期
  DateTime now = DateTime.now();
  //传入的日期
  DateTime targetDate =
      DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch);
  String prefix = "";
  if (now.year != targetDate.year) {
    prefix = DateFormat('yyyy年M月d日').format(targetDate);
  } else if (now.month != targetDate.month) {
    prefix = DateFormat('M月d日').format(targetDate);
  } else if (now.day != targetDate.day) {
    if (now.day - targetDate.day == 1) {
      prefix = '昨天';
    } else {
      prefix = DateFormat('M月d日').format(targetDate);
    }
  }
  if (prefix.isNotEmpty && dayOnly) {
    return prefix;
  }
  int targetHour = targetDate.hour;
  String returnTime = "";
  String suffix = DateFormat('h:mm').format(targetDate);
  if (targetHour >= 0 && targetHour < 6) {
    returnTime = '凌晨';
  } else if (targetHour >= 6 && targetHour < 8) {
    returnTime = '早晨';
  } else if (targetHour >= 8 && targetHour < 11) {
    returnTime = '上午';
  } else if (targetHour >= 11 && targetHour < 13) {
    returnTime = '中午';
  } else if (targetHour >= 13 && targetHour < 18) {
    returnTime = '下午';
  } else if (targetHour >= 18 && targetHour <= 23) {
    returnTime = '晚上';
  }
  return '$prefix $returnTime$suffix';
}