I am formatting a randomly generated future date but it always returns nil even if the format of dateString is matching and has a value.
But if I try with only "(Date())" instead of newDate, it is successful.
let byDays = Int.random(in: 0...30)
var components = DateComponents()
components.day = byDays
let newDate = String(describing: Calendar.current.date(byAdding: components, to: Date()))
//give the current date output in string
let dateFormatterGet = DateFormatter()
dateFormatterGet.isLenient = true
dateFormatterGet.dateFormat = "yyyy-MM-dd HH:mm:ss Z"
dateFormatterGet.locale = Locale(identifier: "en_US_POSIX")
//describe the new format
guard let date = dateFormatterGet.date(from: newDate) else {
return ""
}
let newDateFormatter = DateFormatter()
newDateFormatter.dateFormat = "MMM dd"
let newStr = newDateFormatter.string(from: date)
print(newStr)
I want the date optional(2019-07-23 17:44:23 +0000) to be printed as Jul 23.
I don't understand the purpose of String(describing: ... You can use the date from the Calendar right away:
func randomFutureDate() -> String? {
let day = Int.random(in: 0...30)
var components = DateComponents()
components.day = day
guard let date = Calendar.current.date(byAdding: components, to: Date()) else {
return nil
}
let newDateFormatter = DateFormatter()
newDateFormatter.dateFormat = "MMM dd"
return newDateFormatter.string(from: date)
}
Related
I have got a date in this format..
2019-12-16 18:30:00 +0000
This is the code I have for that..
var utcTime = "\(dic["dueDate"]!)"
self.dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
self.dateFormatter.locale = Locale(identifier: "en_US")
let date = self.dateFormatter.date(from:utcTime)!
print(date)
I wanted to extract month and date from this string. i.e. from the above date string, I want 'December' & '16' separately.
There are several ways to get the expected result, as an option you can use this code with Calendar:
let utcTime = "2020-01-17T22:01:00"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
dateFormatter.locale = Locale(identifier: "en_US")
if let date = dateFormatter.date(from:utcTime) {
let monthInt = Calendar.current.component(.month, from: date)
let dayInt = Calendar.current.component(.day, from: date)
let monthStr = Calendar.current.monthSymbols[monthInt-1]
print(monthStr, dayInt)
}
Welcome to stack overflow.
You can try this :
let calendar = Calendar.current
calendar.component(.year, from: date)
calendar.component(.month, from: date)
calendar.component(.day, from: date)
Hope it helps...
Welcome to stack overflow. Please try this.
func getMonthAndDate(dateString: String) ->(month:String , day:String) {
guard let date = Date.getMonthAndDate(from: dateString, with: "yyyy-MM-dd'T'HH:mm:ss") else {
return ("","")
}
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMMM"
let month = dateFormatter.string(from: date)
dateFormatter.dateFormat = "dd"
let day = dateFormatter.string(from: date)
return (month,day)
}
extension Date {
static func getMonthAndDate(from str: String, with formatter: String) -> Date? {
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone.current//(abbreviation: "GMT") //Set timezone that you want
dateFormatter.locale = NSLocale.current
dateFormatter.dateFormat = formatter //Specify your format that you want
return dateFormatter.date(from: str)
}
}
Swift 5
Here is the extension you need It returns tuple having Month and date as you wanted to have
extension Date {
func getMonthAndDate() ->(month:String , day:String) {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMMM"
let month = dateFormatter.string(from: self)
dateFormatter.dateFormat = "dd"
let day = dateFormatter.string(from: self)
return (month,day)
}
}
I give you example of month u can get date and month value separately ,
visit link for your format http://userguide.icu-project.org/formatparse/datetime
extension Date {
var month: String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMMM"
return dateFormatter.string(from: self)
}
}
you can use it in this way:
let date = Date()
let monthString = date.month
try same thing for date, I hope it will work for you... :)
this is an example from your code. I have stored month and day in separate string to show you. You can change according to your requirements.
var utcTime = "2019-12-16 18:30:00 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss z"
dateFormatter.locale = Locale(identifier: "en_US")
let date = dateFormatter.date(from:utcTime)!
print(date) //2019-12-16 18:30:00 +0000
dateFormatter.dateFormat = "MMMM"
let strMonth = dateFormatter.string(from: date)
print(strMonth) //December
dateFormatter.dateFormat = "dd"
let strDay = dateFormatter.string(from: date)
print(strDay) //16
Also you can use Calendar object to get date, month (gives you in digit) and year.
var utcTime = "2019-12-16 18:30:00 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss z"
dateFormatter.locale = Locale(identifier: "en_US")
let date = dateFormatter.date(from:utcTime)!
let calendarDate = Calendar.current.dateComponents([.day, .year, .month], from: date)
let day = calendarDate.day
print(day) //16
let month = calendarDate.month
print(month) //12
let year = calendarDate.year
print(year) //2019
You can get the day, month and year as follows
let yourDate = Calendar.current.dateComponents([.day, .year, .month], from: Date())
if let day = yourDate.day, let month = yourDate.month, let year = yourDate.year {
let monthName = Calendar.current.monthSymbols[month - 1]
// your code here
}
extension String {
func getMonthDay() -> (Int,Int) {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ssZ"
let date = dateFormatter.date(from: self) ?? Date()
let calendar = Calendar.current
let month = calendar.component(.month, from: date)
let day = calendar.component(.day, from: date)
return (month, day)
}
}
I need to return date string is same format I retrieve it, but after converting to Date and back it lose few characters
var dateStr = "2019-08-02T11:46:46.5117312Z"
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ"
let date = formatter.date(from: dateStr)
var str = formatter.string(from: date!) // ===>>> "2019-08-02T11:46:46.511Z"
You can do it with custom formatter. But note that there not enough Double precision to store date. Result is 2019-08-02T11:46:46.5117311Z. Code:
class CustomDateFormatter {
private let dateFormatter: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
return formatter
}()
func date(fromString str: String) -> Date? {
let strs = str.components(separatedBy: CharacterSet(charactersIn: ".Z"))
if strs.count != 3 {
return nil
}
let dateStr = strs[0]
let secondsStr = strs[1]
guard let date = dateFormatter.date(from: dateStr),
let seconds = Double("0."+secondsStr) else {
return nil
}
let timeinteval = date.timeIntervalSince1970 + seconds
return Date(timeIntervalSince1970: timeinteval)
}
func string(fromDate date: Date) -> String {
let clippedDate = Date(timeIntervalSince1970: floor(date.timeIntervalSince1970))
let seconds = date.timeIntervalSince1970.truncatingRemainder(dividingBy: 1)
var lastPart = String(format: "%.7f", seconds)
lastPart = (lastPart as NSString).substring(from: 1)
return "\(dateFormatter.string(from: clippedDate))\(lastPart)Z"
}
}
let dateStr = "2019-08-02T11:46:46.5117312Z"
let formatter = CustomDateFormatter()
let date = formatter.date(fromString: dateStr)!
print(formatter.string(fromDate: date)) // =====>> 2019-08-02T11:46:46.5117311Z
I have two dates, date1 and date2 and I want days between date1 and date 2
Example:
let date1 = 28-May-2019,
let date2 = 31-May-2019
The expected output
[Tue, Web Thr, Fri]
let date1Str = "28-May-2019"
let date2Str = "31-May-2019"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy"
dateFormatter.locale = Locale(identifier: "en_US")
var date1 = dateFormatter.date(from:date1Str)!
var date2 = dateFormatter.date(from:date2Str)!
let dayFormatter = DateFormatter()
dayFormatter.dateFormat = "EEE"
while date1 <= date2 {
let dayInWeek = dayFormatter.string(from: date1)
print(dayInWeek)
date1 = Calendar.current.date(byAdding: .day, value: 1, to: date1)!
}
The following code gives you the days between two dates and should account for trickeries with the calendar.
let calendar = Calendar.current
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd-MMM-yyyy"
let dayFormatter = DateFormatter()
dayFormatter.dateFormat = "EEE"
let dateFrom = dateFormatter.date(from: "28-May-2019")!
let dateTo = dateFormatter.date(from: "31-May-2019")!
var days: [String] = []
var date = dateFrom
while date <= dateTo {
let day = dayFormatter.string(from: date)
days.append(day)
date = calendar.date(byAdding: .day, value: 1, to: date)!
}
print(days)
Try this -
func getWeekdays(dateOne firstDateStr: String, dateTwo secondDateStr: String) -> [String] {
let dateformatter = DateFormatter()
dateformatter.dateFormat = "dd-MMM-yyyy"
guard let firstDate = dateformatter.date(from: firstDateStr),
let secondDate = dateformatter.date(from: secondDateStr) else {
return []
}
let calendar = Calendar.current
let numberOfDays: Int
if firstDate > secondDate {
numberOfDays = (calendar.dateComponents([.day], from: secondDate, to: firstDate).day ?? 0)
} else {
numberOfDays = (calendar.dateComponents([.day], from: firstDate, to: secondDate).day ?? 0)
}
dateformatter.dateFormat = "EEE"
let days = (0...numberOfDays).compactMap { day -> String? in
if let date = calendar.date(byAdding: .day, value: day, to: firstDate) {
return dateformatter.string(from: date)
}
return nil
}
print(days)
return days
}
I am trying to write a function that takes a string (in the format "dd MM yyyy") and returns the day after the one given as a parameter.
For example:
let nextDay = getNextDay("31 12 2016")
print(nextDay)
Would print:
01 01 2017
Can someone show me how to do this? Thanks
Here is the code snippet that may help you.
//Call method like this
convertNextDate(dateString: "31 12 2016")
// Method is here
func convertNextDate(dateString : String){
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd MM yyyy"
let myDate = dateFormatter.date(from: dateString)!
let tomorrow = Calendar.current.date(byAdding: .day, value: 1, to: myDate)
let somedateString = dateFormatter.string(from: tomorrow!)
print("your next Date is \(somedateString)")
}
Another way is to create extension and here it is.
extension String {
func convertToNextDate(dateFormat: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = dateFormat
let myDate = dateFormatter.date(from: self)!
let tomorrow = Calendar.current.date(byAdding: .day, value: 1, to: myDate)
return dateFormatter.string(from: tomorrow!)
}
}
Usage
print("31 12 2016".convertToNextDate(dateFormat: "dd MM yyyy"))
Note: You can use use your desired date-format just make sure it is appropriate.
class DateHelper
{
lazy var formatter:DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "dd MM yyyy"
return formatter
}()
lazy var dateComponents:DateComponents = {
var dateComp = DateComponents()
dateComp.day = 1
return dateComp
}()
func getNext(dateString:String) -> String?
{
if let date = self.formatter.date(from: dateString),
let nextDate = Calendar.current.date(byAdding: self.dateComponents, to: date)
{
return self.formatter.string(from: nextDate)
}
return nil
}
}
DateHelper().getNext(dateString: "31 12 2016")
I want to display calendar in this format
to the user. One option is to use "string range" to get the individual calendar components. The second one is to get it using NSCalendar which to me looks like the better one (is it?). So my code is as below. But there are two problems.
I am not getting the local time form "hour & minute components"
I am getting month in Int. I want it to be in String (month in mediumStyle)
Anyone know how to get what I need? Image attached is what exactly I want to achieve. There I am using three UILabel one for "date", second for "month, year" and third for "time".
Any help would be appreciated.
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)
}
You can use DateFormatter as follow:
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"
NSDateFormatter has monthSymbols, shortMonthSymbols and veryShortSymbols properties.
So try this:
let dateFormatter: NSDateFormatter = NSDateFormatter()
let months = dateFormatter.shortMonthSymbols
let monthSymbol = months[month-1] as! String // month - from your date components
println(monthSymbol)
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
Update Swift 5.x Solution:
Today is Monday, 20 April, 2020
let date = Date() // get a current date instance
let dateFormatter = DateFormatter() // get a date formatter instance
let calendar = dateFormatter.calendar // get a calendar instance
Now you can get every index value of year, month, week, day everything what you want as follows:
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
You can get an array of all month names like:
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”]
You can format current date as you wish like:
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let todayWithTime = dateFormatter.string(from: date) // Result: "2020-04-20 06:17:29"
dateFormatter.dateFormat = "yyyy-MM-dd"
let onlyTodayDate = dateFormatter.string(from: date) // Result: "2020-04-20"
I think this is the most simpler and updated answer.
Swift 4.x Solution:
//if currentMonth = 1
DateFormatter().monthSymbols[currentMonth - 1]
Answer:
January
let now = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "LLLL"
let nameOfMonth = dateFormatter.string(from: now)