对于特定语言的特定日期,NSDateFormatter.dateFromString返回nil [英] NSDateFormatter.dateFromString returns nil for specific dates in specific languages
问题描述
我真的不知道这段代码发生了什么,我正在尝试将字符串转换为日期。我不明白的是,转换适用于大多数日期,但不适用于仅2个日期。
I really don't get what is happening with this code, I'm trying to convert a string to date. What I don't understand is that the conversion works for most of the dates, but doesn't work specially for only 2 dates.
let dateFormatter = NSDateFormatter()
dateFormatter.locale = NSLocale(localeIdentifier: "es")
dateFormatter.dateFormat = "dd 'de' MMMM"
dateFormatter.dateFromString("1 de octubre")
dateFormatter.dateFromString("2 de octubre")
dateFormatter.dateFromString("3 de octubre")
dateFormatter.dateFromString("4 de octubre")
dateFormatter.dateFromString("5 de octubre")
dateFormatter.dateFromString("6 de octubre")
dateFormatter.dateFromString("7 de octubre")
dateFormatter.dateFromString("8 de octubre")
dateFormatter.dateFromString("9 de octubre")
dateFormatter.dateFromString("10 de octubre")
dateFormatter.dateFromString("11 de octubre")
dateFormatter.dateFromString("12 de octubre")
dateFormatter.dateFromString("13 de octubre")
dateFormatter.dateFromString("14 de octubre")
dateFormatter.dateFromString("15 de octubre")
dateFormatter.dateFromString("16 de octubre")
dateFormatter.dateFromString("17 de octubre")
dateFormatter.dateFromString("18 de octubre")
dateFormatter.dateFromString("19 de octubre")
dateFormatter.dateFromString("20 de octubre")
dateFormatter.dateFromString("21 de octubre")
dateFormatter.dateFromString("22 de octubre")
dateFormatter.dateFromString("23 de octubre")
dateFormatter.dateFromString("24 de octubre")
dateFormatter.dateFromString("25 de octubre")
dateFormatter.dateFromString("26 de octubre")
dateFormatter.dateFromString("27 de octubre")
dateFormatter.dateFromString("28 de octubre")
dateFormatter.dateFromString("29 de octubre")
dateFormatter.dateFromString("30 de octubre")
我让这个代码在Playground中试用,但它重现了我在生产代码中得到的一些日期。看看这段代码产生的输出:
I made this code to try out in Playground, but it reproduces some dates I'm getting in my production code. Take a look in the output that this code produces:
正如您在图像中看到的那样,它在10月8日和15日不起作用。适用于所有其他人。我也试过八月和九月,在那几个月里,所有的日子都在工作。我还尝试将日期用葡萄牙语放在pt-br语言环境中,也不适用于10月8日和15日。这可以解释吗?
As you can see in the image, it doesn't work for October 8 and 15. Works for all the others. I also tried August and September, and in those months all days work. I also tried to put the dates in Portuguese in pt-br locale, and also doesn't work for October 8 and 15. Is it explainable?
更新:@zneak代码为我生成以下输出:
Update: @zneak code produces the following output for me:
换句话说,10月8日停止运行。
In other words, stopped running October 8.
推荐答案
您只需要设置日期格式化程序日历物业:
You just need to set your date formatter calendar property:
Xcode 8.2.1•Swift 3.0.2
let dateFormatter = DateFormatter()
dateFormatter.calendar = Calendar(identifier: .iso8601)
dateFormatter.locale = Locale(identifier: "es")
dateFormatter.dateFormat = "dd 'de' MMMM"
dateFormatter.date(from: "8 de octubre") // "Oct 8, 2000, 1:00 AM"
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