按时间格式划分日期时间列表颤振

Question

我需要时间在上午和下午从列表listOfDateTime。例:下午2:30，下午5:30

listOfDateTime [2022-10-10 14:30:45.000, 2022-10-10 17:30:45.000, 2022-10-10 18:00:45.000, 2022-10-10 18:30:45.000,2022-10-10 19:30:45.000, 2022-10-10 22:00:45.000, 2022-10-12 17:00:55.000, 2022-10-14 17:00:55.000, 2022-10-10 14:00:45.000,];

Answer 1

如果您的列表是String，您可以使用如下英特包：

var listOfDateTime = [2022-10-10 14:30:45.000, 2022-10-10 17:30:45.000, 2022-10-10 18:00:45.000, 2022-10-10 18:30:45.000,2022-10-10 19:30:45.000, 2022-10-10 22:00:45.000, 2022-10-12 17:00:55.000, 2022-10-14 17:00:55.000, 2022-10-10 14:00:45.000,];

var result = listOfDateTime.map((e)=> DateFormat('yyyy-MM-dd hh:mm:ss a').parse(e)).toList();

如果您的列表包含DateTime：

var result = listOfDateTime.map((e)=> DateFormat('yyyy-MM-dd hh:mm:ss a').parse(DateFormat('yyyy-MM-dd hh:mm:ss a').format(e))).toList();