Swift 如何在json数据中拆分包含两个UTC格式日期的字符串

在我的应用程序中，my

JSON

包含一个带有两个日期的字符串

我的字符串

"2017-07-22 00:00:00 SSS TO 2017-07-25 00:00:00 SSS"

我希望在tableView的

cellForRowAt

函数中得到结果：

func getTrimmedDates(with dates: String) -> [String]{
    return dates.replacingOccurrences(of: "SSS", with: "").components(separatedBy: "TO")
}

func getFormattedDates(with dates: [String]) -> String {
    let joinedDates = dates.compactMap({ $0.toDate().dateToFormattedString() }).joined(separator: " - ")
    return joinedDates
}

• 预期格式：

  22 Jul - 25 Jul
  

我的代码，我已经尝试，但最终日期给我零。我哪里错了，请纠正我：

let dict1 = fiidiiOverviewArr[section].date

            let items = dict1?.components(separatedBy: " TO ")
            let date1 = items![0]
            let date2 = items![1]

            print(date1)
            print(date2)

            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "dd MMM '-' dd MMM"
            let string = date1 + " - " + date2
            let finalDate = dateFormatter.date(from: string)
            print(finalDate)
            view.Header_date.text = "\(String(describing: finalDate))"

---

您可以为此创建

日期

和

字符串

扩展名：

日期扩展名：

extension Date {

    func dateToFormattedString() -> String {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        /// "dd MMM" is your expected format, you can use whatever you want
        formatter?.dateFormat = "dd MMM"
        var returnValue: String?
        returnValue = formatter?.string(from: self)
        return "\(returnValue ?? "")"
    }
}

extension String {
    func toDate() -> Date {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        formatter?.timeZone = TimeZone(secondsFromGMT: 0)
        formatter?.dateFormat = "yyyy-MM-dd HH:mm:ss"
        if let date: Date = formatter?.date(from: self) {
            return date
        } else {
            return Date()
        }
    }
}

let dates = "2017-07-22 00:00:00 SSS TO 2017-07-25 00:00:00 SSS"

let date = getTrimmedDates(with: dates)

let formattedDate = getFormattedDates(with: date)

print(formattedDate) /// You get "22 Jul - 25 Jul"

StringExtension:

extension Date {

    func dateToFormattedString() -> String {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        /// "dd MMM" is your expected format, you can use whatever you want
        formatter?.dateFormat = "dd MMM"
        var returnValue: String?
        returnValue = formatter?.string(from: self)
        return "\(returnValue ?? "")"
    }
}

extension String {
    func toDate() -> Date {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        formatter?.timeZone = TimeZone(secondsFromGMT: 0)
        formatter?.dateFormat = "yyyy-MM-dd HH:mm:ss"
        if let date: Date = formatter?.date(from: self) {
            return date
        } else {
            return Date()
        }
    }
}

let dates = "2017-07-22 00:00:00 SSS TO 2017-07-25 00:00:00 SSS"

let date = getTrimmedDates(with: dates)

let formattedDate = getFormattedDates(with: date)

print(formattedDate) /// You get "22 Jul - 25 Jul"

然后您应该创建修剪功能：

func getTrimmedDates(with dates: String) -> [String]{
    return dates.replacingOccurrences(of: "SSS", with: "").components(separatedBy: "TO")
}

func getFormattedDates(with dates: [String]) -> String {
    let joinedDates = dates.compactMap({ $0.toDate().dateToFormattedString() }).joined(separator: " - ")
    return joinedDates
}

您应该创建格式化程序函数：

func getTrimmedDates(with dates: String) -> [String]{
    return dates.replacingOccurrences(of: "SSS", with: "").components(separatedBy: "TO")
}

func getFormattedDates(with dates: [String]) -> String {
    let joinedDates = dates.compactMap({ $0.toDate().dateToFormattedString() }).joined(separator: " - ")
    return joinedDates
}

用法：

extension Date {

    func dateToFormattedString() -> String {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        /// "dd MMM" is your expected format, you can use whatever you want
        formatter?.dateFormat = "dd MMM"
        var returnValue: String?
        returnValue = formatter?.string(from: self)
        return "\(returnValue ?? "")"
    }
}

extension String {
    func toDate() -> Date {
        var formatter: DateFormatter?
        formatter = DateFormatter()
        formatter?.timeZone = TimeZone(secondsFromGMT: 0)
        formatter?.dateFormat = "yyyy-MM-dd HH:mm:ss"
        if let date: Date = formatter?.date(from: self) {
            return date
        } else {
            return Date()
        }
    }
}

let dates = "2017-07-22 00:00:00 SSS TO 2017-07-25 00:00:00 SSS"

let date = getTrimmedDates(with: dates)

let formattedDate = getFormattedDates(with: date)

print(formattedDate) /// You get "22 Jul - 25 Jul"

---

您可以使用

.components（分隔为：“TO”）

将两个日期放入一个数组中。然后，您可以使用日期格式化程序将每个日期设置为正确的可读格式（e.x.7月22日）。然后，您可以将两个日期字符串连接为“-”。您能给我一个示例吗？实际上，json格式是：“日期”：“2019-07-22 00:00:00.000至2019-07-27 00:00:00.000”我希望7月22日至7月27日您可以修改此扩展，但我会为您的利益编辑我的答案。这给了我7月23日至7月23日根据json数据我得到正确的第二个日期，但我在所有日期中得到的第一个日期您应该设置

formatter？.timeZone=timeZone（secondsFromGMT:0）

在

toDate（）函数中（字符串扩展名）