Question

我正试图允许用户选择其日期的格式，以用于自定义键盘。因此，从一种观点来看，我有：

var userCustomDateArrayForSaving = []
var defaultsUser = UserDefaults(suiteName: "group.prefsettings.myapp")

和一堆带有标签的按钮，如下所示：buttons with tags

按下按钮时，它们的标签将附加到userCustomDateArrayForSaving变量中，并且当用户按下“保存”时：

defaultsUser?.setValue(userCustomDateArrayForSaving, forKey: "dateSettings")
defaultsUser?.synchronize()

因此，最后可能等于[0, 53,52,10,52,22]

然后，在另一个视图中，我需要这样做：

var dateStampDefaults = UserDefaults(suiteName: "group.prefsettings.myapp")!.array(forKey: "dateSettings") as? [Int] ?? [Int]()

当按下日期按钮时，我一直试图在该数组上循环进行for循环并“解码”，如下所示：

@objc func myStampsDatePressed(sender: UIButton!) {
    //
    let date = Date()
    let calendar = Calendar.current

    let proxy = textDocumentProxy as UITextDocumentProxy
    let formatter = DateFormatter()

    var localTranslatedDateString = "   "

    for dateMacro in dateStampDefaults {

        switch dateMacro {
        case 0:
            return localTranslatedDateString.append(contentsOf: (formatter.weekdaySymbols[calendar.component(.weekday, from: date)]))
        case 1:
            return localTranslatedDateString.append(contentsOf: (formatter.shortWeekdaySymbols[calendar.component(.weekday, from: date)]))
        case 2:
            return localTranslatedDateString.append(contentsOf: (formatter.veryShortWeekdaySymbols[calendar.component(.weekday, from: date)]))
        case 10:
            return localTranslatedDateString.append(contentsOf: (formatter.monthSymbols[calendar.component(.month, from: date)]))
        case 11:
            return localTranslatedDateString.append(contentsOf: (formatter.shortMonthSymbols[calendar.component(.month, from: date)]))
        case 12:
            return localTranslatedDateString.append(contentsOf: (formatter.veryShortMonthSymbols[calendar.component(.month, from: date)]))
    ...(etc)    
    }

    let str = formatter.string(from: Date())
    myStampLengthForDelete = str
    proxy.insertText(localTranslatedDateString)

}

...以便某人的日期显示为“ 12月1日，星期一”。

谁能提供一些建议？谢谢！

Answer 1

是的...您有一个简单的拼写错误。

defaultsUser?.setValue(userCustomDateArrayForSaving, forKey: "dateSettings")
defaultsUser?.synchronize()

var dateStampDefaults = UserDefaults(suiteName: "group.prefsettings.myapp")!.array(forKey: "dateSetting") as? [Int] ?? [Int]()

应该是

var dateStampDefaults = UserDefaults(suiteName: "group.prefsettings.myapp")!.array(forKey: "dateSettings") as? [Int] ?? [Int]() //THE last s IN dateSetting(s)

注意：

经过以下测试，并显示[0, 53, 52, 10, 52, 2]。

var userCustomDateArrayForSaving = [0, 53,52,10,52,2]
var defaultsUser = UserDefaults(suiteName: "group.prefsettings.myapp")

defaultsUser?.setValue(userCustomDateArrayForSaving, forKey: "dateSettings")
defaultsUser?.synchronize()

var dateStampDefaults = UserDefaults(suiteName: "group.prefsettings.myapp")!.array(forKey: "dateSettings") as? [Int] ?? [Int]()

print(dateStampDefaults)

将userDefaults导入为[Int]，然后使用forloop进行迭代并切换？

1 个答案: