只有在 iOS 13 上运行时才会出现 DateFormater 错误 [英] DateFormater error only when running on iOS 13

问题描述

我有一个将字符串转换为日期格式的函数.此功能在 iOS 12 上按预期工作，但在 iOS 13 上运行.我收到此错误:

I have a function to convert string to date format. This function works as expected on iOS 12 but on iOS 13. I get this error:

线程 1:致命错误:在展开可选值时意外发现 nil"

"Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value"

这是我的代码:

func ConvertDateAndTimeFormat2() {
     let timeDate = "2019-09-24 15:00:00 +0000"
     let dateFormatter = DateFormatter()
     dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss +zzzz"
     dateFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
     var dateObj:Date!
     dateObj = dateFormatter.date(from: timeDate)
     dateFormatter.dateFormat = "EEEE, MMM d, yyyy"
     dateFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")

     let timeFormatter = DateFormatter()

     timeFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss +zzzz"
     timeFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
     var timeObj:Date!
     timeObj = timeFormatter.date(from: timeDate)

     timeFormatter.dateFormat = "HH:mm"
     timeFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
     let timef = "\(timeFormatter.string(from: timeObj!))"
     let Date = "\(dateFormatter.string(from: dateObj!))"
 }

推荐答案

请更改您的日期格式并使用yyyy-MM-dd HH:mm:ss Z"并尝试.

Please change your dateformat and use "yyyy-MM-dd HH:mm:ss Z" and try.

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss Z"

更多详情请访问https://nsdateformatter.com/

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