dateToStr function
时间转换为字符串
Implementation
String? dateToStr(DateTime? dateTime) {
if (dateTime != null) {
String dateSlug =
"${dateTime.year.toString()}${dateTime.month.toString().padLeft(2, '0')}${dateTime.day.toString().padLeft(2, '0')}${dateTime.hour.toString().padLeft(2, '0')}${dateTime.minute.toString().padLeft(2, '0')}${dateTime.second.toString().padLeft(2, '0')}";
return dateSlug;
}
return null;
}