dateFormat method
根据格式将时间戳(Milliseconds)格式化日期
Implementation
String? dateFormat(String pattern, {bool isSecond = false}) {
if (this == null) {
return null;
}
num value = this!;
if (isSecond) {
value = value * 1000;
}
var date = DateTime.fromMillisecondsSinceEpoch(value.toInt());
return date.dateFormat(pattern);
}