Flutter

DateTime.fromMillisecondsSinceEpoch()를 사용하면 된다!

  String _convertTime(time) {
    DateTime createTime = DateTime.fromMillisecondsSinceEpoch(time);
    DateTime now = DateTime.now();

    Duration gap = now.difference(createTime);

    if (gap.inSeconds < 60) {
      return "${gap.inSeconds}s";
    } else if (gap.inMinutes < 60) {
      return "${gap.inMinutes}m";
    } else {
      return "${gap.inHours}h";
    }
  }