在2行上格式化日期

问题描述：

我希望日期在2行上

public func smdt(date:NSDate)->NSString{
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "h:mma dd MMMM yyyy"
    return dateFormatter.stringFromDate(date)
}

我在字符串中添加了时间，但我想在"dd"之前开始新行

I add time in string, but I want to start new line before "dd"

示例: h:mma \ ndd MMMM yyyy

应该是:

7:12 PM

7:12PM

2015年5月19日

19 May 2015

在 .dateFormat 中， \ n 不起作用...唯一的方法是检测PM和19之间的第一个空格在哪里并替换 \ n .怎么做?

In .dateFormat, \n doesn't work... The only way to be done is to detect where is the first whitespace between PM and 19 and replace it with \n. How it can be done ?

它必须在地球上的每个时区工作.这意味着我不能使用AM/PM进行分离...

It has to work on every timezone on the earth. That means I can't use AM/PM for separating...

答

您的代码应该可以工作.也许让您感到困惑，例如，如果您在操场上检查返回值的值，则该值是这样的:

Your code should work. Maybe it confuses you, that if you check the values of your return-values from within the playground for example, the value is like that:

"6:21PM\n19 May 2015"

但是，如果我这样使用您的代码:

But if I use your code like that:

public func smdt(date:NSDate)->NSString{
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "h:mma\ndd MMMM yyyy"
    return dateFormatter.stringFromDate(date)
}

并使用 println 调用值:

println(smdt2(NSDate()))

打印出的值是这样的:

6:22PM
19 May 2015

因此，您可以像尝试过的那样使用代码.

So you can use your code like you tried already.

但是您也可以像这样分割小时和日期/月份，并在以后进行连接:

But you also could split the hour and day/month like that and concate it later:

public func smdt(date:NSDate)->NSString{
    var dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "h:mma"
    var hour = dateFormatter.stringFromDate(date)
    dateFormatter.dateFormat = "dd MMMM yyyy"

    var otherPart = dateFormatter.stringFromDate(date)
    return "\(hour)\n\(otherPart)"
}

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