我正在尝试使用此函数计算Swift中birthdayDate的年龄:
var calendar : NSCalendar = NSCalendar.currentCalendar()
var dateComponentNow : NSDateComponents = calendar.components(
NSCalendarUnit.CalendarUnitYear,
fromDate: birthday,
toDate: age,
options: 0)
但我得到一个错误Extra argument toDate in call
在目标c中这是代码,但我不知道为什么会出现此错误:
NSDate* birthday = ...;
NSDate* now = [NSDate date];
NSDateComponents* ageComponents = [[NSCalendar currentCalendar]
components:NSYearCalendarUnit
fromDate:birthday
toDate:now
options:0];
NSInteger age = [ageComponents year];
有没有比这更好的形式?
您收到错误消息,因为0
不是NSCalendarOptions
的有效值。对于“无选项”,请使用NSCalendarOptions(0)
或简单地使用nil
:
let ageComponents = calendar.components(.CalendarUnitYear,
fromDate: birthday,
toDate: now,
options: nil)
let age = ageComponents.year
(指定nil
是可能的,因为NSCalendarOptions
符合RawOptionSetType
协议,而NilLiteralConvertible
协议继承自let ageComponents = calendar.components(.Year,
fromDate: birthday,
toDate: now,
options: [])
。)
Swift 2更新:
Date
Swift 3更新:
假设使用Swift 3类型Calendar
和let now = Date()
let birthday: Date = ...
let calendar = Calendar.current
let ageComponents = calendar.dateComponents([.year], from: birthday, to: now)
let age = ageComponents.year!
:
func calcAge(birthday: String) -> Int {
let dateFormater = DateFormatter()
dateFormater.dateFormat = "MM/dd/yyyy"
let birthdayDate = dateFormater.date(from: birthday)
let calendar: NSCalendar! = NSCalendar(calendarIdentifier: .gregorian)
let now = Date()
let calcAge = calendar.components(.year, from: birthdayDate!, to: now, options: [])
let age = calcAge.year
return age!
}
我创建这个方法非常简单,只需将生日日期放在方法中,这将返回Age作为Int
func calcAge(birthday: String) -> Int{
let dateFormater = NSDateFormatter()
dateFormater.dateFormat = "MM/dd/yyyy"
let birthdayDate = dateFormater.dateFromString(birthday)
let calendar: NSCalendar! = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
let now: NSDate! = NSDate()
let calcAge = calendar.components(.Year, fromDate: birthdayDate!, toDate: now, options: [])
let age = calcAge.year
return age
}
print(calcAge("06/29/1988"))
func getAgeFromDOF(date: String) -> (Int,Int,Int) {
let dateFormater = DateFormatter()
dateFormater.dateFormat = "YYYY-MM-dd"
let dateOfBirth = dateFormater.date(from: date)
let calender = Calendar.current
let dateComponent = calender.dateComponents([.year, .month, .day], from:
dateOfBirth!, to: Date())
return (dateComponent.year!, dateComponent.month!, dateComponent.day!)
}
let age = getAgeFromDOF(date: "2000-12-01")
print("\(age.0) Year, \(age.1) Month, \(age.2) Day")
对于swift 4工作正常
let myDOB = Calendar.current.date(from: DateComponents(year: 1994, month: 9, day: 10))!
let myAge = Calendar.current.dateComponents([.month], from: myDOB, to: Date()).month!
let years = myAge / 12
let months = myAge % 12
print("Age : \(years).\(months)")
这适用于Swift 3
let now = NSDate()
let calendar : NSCalendar = NSCalendar.current as NSCalendar
let ageComponents = calendar.components(.year, from: datePickerView.date, to: now as Date, options: [])
let age = ageComponents.year!
ageCalculated.text = String(age)
这对我来说很快。
lazy var dateFormatter : DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
formatter.locale = Locale(identifier: "en_US_POSIX")
return formatter
}()
let birthday = dateFormatter.date(from: "1980-04-25")
let timeInterval = birthday?.timeIntervalSinceNow
let age = abs(Int(timeInterval! / 31556926.0))
感谢@Martin R.
这是swift 5的最佳方式
qazxswpoi