Question

我正在从XML文件转换日期字段，这些日期存储在＆＃34; yyyyMMddHHmmss＆＃34;格式。当我使用DateFormmater的日期功能时，我没有得到正确的时间。因此，对于dateString＆＃34; 20150909093700＆＃34;，它返回＆＃34; 2015-09-09 13:37:00 UTC＆＃34;而不是＆＃34; 2015-09-09 09：37：00＆＃34;。我在存储Core Data NSDate字段之前进行了此转换。

这是我的代码：

static func stringToDate(DateString dateString: String) -> NSDate? {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyyMMddHHmmss"
    dateFormatter.locale = Locale.init(identifier: "en_US_POSIX")
    dateFormatter.timeZone = TimeZone(abbreviation: "EST")

    if let date = dateFormatter.date(from: dateString) {
        return date as NSDate?
    }

    return nil

}

Answer 1

@ user30646 - 看看这是否有意义。使用您的确切功能：

func stringToDate(DateString dateString: String) -> NSDate? {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyyMMddHHmmss"
    dateFormatter.locale = Locale.init(identifier: "en_US_POSIX")
    dateFormatter.timeZone = TimeZone(abbreviation: "EST")

    if let date = dateFormatter.date(from: dateString) {
        return date as NSDate?
    }

    return nil

}

let dateString = "20150909093700"

let returnedDate = stringToDate(DateString: dateString)

print("Date without formatting or Time Zone: [", returnedDate ?? "return was nil", "]")

let dFormatter = DateFormatter()
dFormatter.timeZone = TimeZone(abbreviation: "EST")
dFormatter.dateStyle = .full
dFormatter.timeStyle = .full

print("Result with formatting and Time Zone: [", dFormatter.string(from: returnedDate as! Date), "]")

您正在获得“正确的时间”...您只是认为自己不是因为您正在查看该日期/时间的错误 字符串表示

从dateformatter

1 个答案: