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Swift-如何默认存储多个日期并检索?

nsuserdefaults nsdate swift

2

Lester · 技术社区 · 8 年前

let today = NSDate()
    let nextTue = Calendar.current.date(byAdding: .day, value: 6, to: today as Date)
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd"
    let todayString = formatter.string(from: today as Date)
    let nextString = formatter.string(from: nextTue!)
    formatter.dateFormat = "dd-MMM-yyyy"

    let calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)
    let components = calendar!.components([.weekday], from: today as Date)

    if components.weekday == 3 {
        print("Hello Tuesday")
        thisWeekDate.text! = "\(todayString) - \(nextString)"

    } else {
        print("It's not Tuesday")
    }

1 回复 | 直到 8 年前

1

2

inspector_60 8 年前

NSUserDefaults

在您的情况下,最简单的方法是保存两个不同的日期对象,或者您可以创建一个包含这两个日期对象的字典,然后将其保存。

UserDefaults.standard.set(todayString, forKey: "todayStringKey")

检索

let RetrivedDate = UserDefaults.standard.object(forKey: "todayStringKey") as? NSDate

删除-如果您想将其从存储中完全删除

UserDefaults.standard.removeObject(forKey: "todayStringKey")