怎么把Flutter TimeOfDay转换成DateTime？ [英] How to convert flutter TimeOfDay to DateTime?

问题描述

我有一个时间选择器，该选择器返回TimeOfDay对象，但我已将该值保存为一个从DateTime.millisecondsSinceEpoch获得的毫秒数整数。

I have time picker which returns TimeOfDay object but I have save that value in a database as an integer of milliseconds which obtained from DateTime.millisecondsSinceEpoch

推荐答案

这是不可能的。
TimeOfDay 仅保留小时和分钟。尽管 DateTime 还具有日/月/年

This is not possible. TimeOfDay holds only the hour and minute. While a DateTime also has day/month/year

如果要进行转换，则需要更多信息。如当前的DateTime。然后将两者合并为一个最终日期时间。

If you want to convert it, you will need more informations. Such as the current DateTime. And then merge the two into one final datetime.

TimeOfDay t;
final now = new DateTime.now();
return new DateTime(now.year, now.month, now.day, t.hour, t.minute);

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