如何将字符添加到dateFormatter [英] How to add characters into dateFormatter
问题描述
我遵循了此答案,但这对我不起作用。
I followed this answer, but it doesn't work for me.
我想将时间格式化为:
2017-09-11 T 11:45:00-04:00
"2017-09-11T11:45:00-04:00"
我在做:
let xFormatter = DateFormatter()
xFormatter.dateFormat = "yyyy-MM-ddTHH:mm:ss-04:00"
print(xFormatter.string(from: date))
我需要在日期和日期之间输入 T 时间。但是,如果添加了该格式,我的格式将变为:
I need a T between the date and time. however if I add that, my format turns into something like:
2017-09-11
2017-09-11
(最后的-4:00是一个时间偏移,我用硬编码...)
(The -4:00 at the end is a timeoffset which I hardcode...)
推荐答案
添加单引号
xFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss-04:00"
摘自文档:
...如果要表示文字文本,则需要将ASCII字母括在单引号中。
... This includes the need to enclose ASCII letters in single quotes if they are intended to represent literal text.
编辑:
请注意,
要考虑时区,必须将设置为时区,只是对字符串的修改。 timeZone $ c格式程序的$ c>
xFormatter.timeZone = TimeZone(secondsFromGMT: -14400)
在iOS 10.0+和macOS 10.12+中,有一种更方便的方法来创建ISO8601字符串
In iOS 10.0+ and macOS 10.12+ there is a more convenient way to create an ISO8601 string
let isoFormatter = ISO8601DateFormatter()
isoFormatter.timeZone = TimeZone(secondsFromGMT: -14400)
isoFormatter.formatOptions = .withInternetDateTime
print(isoFormatter.string(from: Date()))
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