Question

我想以这种格式显示日历

visible calendar style date

给用户。一种选择是使用＆＃34;字符串范围＆＃34;获取各个日历组件。第二个是使用NSCalendar来获取它对我来说看起来更好（是吗？）。所以我的代码如下。但是有两个问题。

我没有收到当地时间表＆＃34; hour＆amp;分钟组件＆＃34;
我正在进入Int。我希望它在String（在mediumStyle中的月份）

任何人都知道如何得到我需要的东西？附加图像是我想要实现的目标。在那里，我使用三个UILabel用于＆＃34; date＆＃34;，第二个用于＆＃34;月，年＆＃34; ＆＃34;时间＆＃34;

任何帮助都将不胜感激。

var inputDateString = "Jun/12/2015 02:05 Am +05:00"

override func viewDidLoad() {
    super.viewDidLoad()
    let newDate = dateformatterDateString(inputDateString)
    let calendar = NSCalendar.currentCalendar()
    let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitMonth | .CalendarUnitYear | .CalendarUnitDay, fromDate: newDate!)

    let hour = components.hour
    let minutes = components.minute
    let month = components.month
    let year = components.year
    let day = components.day

    println(newDate)
    println(components)
    println(day)     // 12
    println(month)   // 6 -----> Want to have "Jun" here
    println(year)    // 2015
    println(hour)    // 2 ------> Want to have the hour in the inputString i.e. 02
    println(minutes) // 35 ------> Want to have the minute in the inputString i.e.  05
}

func dateformatterDateString(dateString: String) -> NSDate? {
    let dateFormatter: NSDateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "MMM/dd/yyyy hh:mm a Z"
    //      dateFormatter.timeZone = NSTimeZone(abbreviation: "UTC")
    dateFormatter.timeZone = NSTimeZone.localTimeZone()
    return dateFormatter.dateFromString(dateString)
}

Answer 1

您可以使用DateFormatter，如下所示：

extension Formatter {
    static let monthMedium: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "LLL"
        return formatter
    }()
    static let hour12: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "h"
        return formatter
    }()
    static let minute0x: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "mm"
        return formatter
    }()
    static let amPM: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "a"
        return formatter
    }()
}
extension Date {
    var monthMedium: String  { return Formatter.monthMedium.string(from: self) }
    var hour12:  String      { return Formatter.hour12.string(from: self) }
    var minute0x: String     { return Formatter.minute0x.string(from: self) }
    var amPM: String         { return Formatter.amPM.string(from: self) }
}

let date = Date()

let dateMonth  = date.monthMedium  // "May"
let dateHour   = date.hour12       // "1"
let dateMinute = date.minute0x     // "18"
let dateAmPm = date.amPM           // "PM"

Answer 2

NSDateFormatter有monthSymbols，shortMonthSymbols和veryShortSymbols属性。

所以试试这个：

let dateFormatter: NSDateFormatter = NSDateFormatter()

let months = dateFormatter.shortMonthSymbols
let monthSymbol = months[month-1] as! String // month - from your date components

println(monthSymbol)

Answer 3

I am adding three types. Have a look.

        //Todays Date
        let todayDate = NSDate()
        let calendar = NSCalendar(identifier: NSCalendarIdentifierGregorian)!
        let components = calendar.components(.CalendarUnitYear | .CalendarUnitMonth | .CalendarUnitDay, fromDate: todayDate)
        var (year, month, date) = (components.year, components.month, components.day)
        println("YEAR: \(year)  MONTH: \(month) DATE: \(date)")

        //Making a X mas Yr
        let morningOfChristmasComponents = NSDateComponents()
        morningOfChristmasComponents.year = 2014
        morningOfChristmasComponents.month = 12
        morningOfChristmasComponents.day = 25
        morningOfChristmasComponents.hour = 7
        morningOfChristmasComponents.minute = 0
        morningOfChristmasComponents.second = 0

        let morningOfChristmas = NSCalendar.currentCalendar().dateFromComponents(morningOfChristmasComponents)!
        let formatter = NSDateFormatter()
        formatter.dateStyle = NSDateFormatterStyle.LongStyle
        formatter.timeStyle = .MediumStyle
        let dateString = formatter.stringFromDate(morningOfChristmas)
        print("dateString : \(dateString)")


        //Current month - complete name
        let dateFormatter: NSDateFormatter = NSDateFormatter()
        let months = dateFormatter.monthSymbols
        let monthSymbol = months[month-1] as! String
        println("monthSymbol  : \(monthSymbol)")


Print Results:

YEAR: 2015  MONTH: 10 DATE: 9
dateString : December 25, 2014 at 7:00:00 AM
monthSymbol  : October

Answer 4

Swift 4.x解决方案：

//if currentMonth = 1
DateFormatter().monthSymbols[currentMonth - 1]

答案：

一月

Answer 5

更新Swift 5.x解决方案：

今天是public class App extends Application { final NumberAxis xAxis = new NumberAxis(); final NumberAxis yAxis = new NumberAxis(); private XYChart.Series<Number, Number> seriesTotal = new XYChart.Series<Number, Number>(); private LineChart<Number, Number> chart = new LineChart<>(xAxis, yAxis); @Override public void start(Stage stage) throws Exception { BorderPane b = new BorderPane(); MyService ser = new MyService(); // Job j = new Job(); Button button = new Button("start"); Button button1 = new Button("start2"); List<Object> test = new ArrayList<>(); button.setOnAction(((event) -> { test.clear(); ser.addEventHandler(WorkerStateEvent.WORKER_STATE_SUCCEEDED, // new EventHandler<WorkerStateEvent>() { @Override public void handle(WorkerStateEvent t) { seriesTotal = ser.getValue(); //test.add(ser.getValue()); //chart.getData().add(ser.getValue()); } }); ser.restart(); System.out.println(seriesTotal); chart.getData().add(seriesTotal); seriesTotal.getData().clear(); })); button1.setOnAction(((event) -> { XYChart.Series<Number, Number> series1 = new XYChart.Series<Number, Number>(); series1.getData().add(new XYChart.Data<Number, Number>(Math.random(), Math.random())); series1.getData().add(new XYChart.Data<Number, Number>(Math.random(), Math.random())); series1.getData().add(new XYChart.Data<Number, Number>(Math.random(), Math.random())); chart.getData().add(series1); // chart.getData().setAll(arg0); })); b.setBottom(button); b.setCenter(chart); b.setLeft(button1); Scene sc = new Scene(b); stage.setScene(sc); stage.show(); } public static void main(String[] args) { launch(args); } } enter code here

Monday, 20 April, 2020

现在，您可以按以下方式获取年，月，周，日的所有索引值，如下所示：

    let date = Date() // get a current date instance
    let dateFormatter = DateFormatter() // get a date formatter instance
    let calendar = dateFormatter.calendar // get a calendar instance

您可以获得所有月份名称的数组，例如：

    let year = calendar?.component(.year, from: date) // Result: 2020
    let month = calendar?.component(.month, from: date) // Result: 4
    let week = calendar?.component(.weekOfMonth, from: date) // Result: 4
    let day = calendar?.component(.day, from: date) // Result: 20
    let weekday = calendar?.component(.weekday, from: date) // Result: 2
    let weekdayOrdinal = calendar?.component(.weekdayOrdinal, from: date) // Result: 3
    let weekOfYear = calendar?.component(.weekOfYear, from: date) // Result: 17

您可以根据需要设置当前日期的格式：

    let monthsWithFullName = dateFormatter.monthSymbols // Result: ["January”, "February”, "March”, "April”, "May”, "June”, "July”, "August”, "September”, "October”, "November”, "December”]
    let monthsWithShortName = dateFormatter.shortMonthSymbols // Result: ["Jan”, "Feb”, "Mar”, "Apr”, "May”, "Jun”, "Jul”, "Aug”, "Sep”, "Oct”, "Nov”, "Dec”]

我认为这是最简单和最新的答案。

iOS Swift将日历组件转换为月份到中等样式的字符串月

5 个答案: