如何将带有字符串的自定义日期格式写入其中？

Question

愚蠢的问题：

我愿意在 Swift 中为巴西模式编写自定义日期格式，类似于：

"20 de Junho, 2017" // 20 of June, 2017

我正在尝试这种模式：

"dd de MMMM, yyyy"

但"de"世界也被当作一种模式。我怎么能说这是一个常数？

谢谢

Answer 1

你必须用引号括起来'，例如

"dd 'de' MMMM, yyyy"

来自Date Format Patterns：

Literal text, which is output as-is when formatting, and must closely match when parsing. Literal text can include:

Any characters other than A..Z and a..z, including spaces and punctuation.

Any text between single vertical quotes ('xxxx'), which may include A..Z and a..z as literal text.

您也可以让格式化程序生成 de:

let locale = Locale(identifier: "pt-BR")
let dateFormatter = DateFormatter()

let dayFormat = DateFormatter.dateFormat(fromTemplate: "d MMMM", options: 0, locale: locale)!

dateFormatter.dateFormat = dayFormat + ", yyyy"
dateFormatter.locale = locale

print(dateFormatter.string(from: Date())) // 7 de junho, 2017

如何将带有字符串的自定义日期格式写入其中？

How can I write a custom Date Format with string into it?

date

nsdateformatter

ios

swift