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NSDateに基づいて年齢を計算する方法

この形式の生年月日に基づいて年齢を計算する方法6/24/1976 mon/date/year ...

iosdatensdatefoundation
50
Linux world

これらの答えの多くはうるう年を適切に説明していないため、定数で割るのではなくAppleの方法を使用するのが最善です。

Swift

let birthday: NSDate = ...
let now = Date()
let ageComponents = calendar.dateComponents([.year], from: birthday, to: now)
let age = ageComponents.year

Objective-C

NSDate* birthday = ...;

NSDate* now = [NSDate date];
NSDateComponents* ageComponents = [[NSCalendar currentCalendar] 
                                   components:NSCalendarUnitYear 
                                   fromDate:birthday
                                   toDate:now
                                   options:0];
NSInteger age = [ageComponents year];

これは他のどの回答よりも簡潔で正確だと思います。

258
cobbal

生年月日と年月日に基づいて実際の年齢を計算する方法は次のとおりです。

NSString *birthDate = @"03/31/1990";    
NSDate *todayDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"MM/dd/yyyy"];
int time = [todayDate timeIntervalSinceDate:[dateFormatter dateFromString:birthDate]];
int allDays = (((time/60)/60)/24);
int days = allDays%365;
int years = (allDays-days)/365;

NSLog(@"You live since %i years and %i days",years,days);

年と正確な日を返します。また、必要に応じてNSDateFormatterなどを変更できます。

10
Fabio Poloni

これは私がこれから得たコードです link ..それは素晴らしい動作をします。

- (NSString *)age:(NSDate *)dateOfBirth {
   NSInteger years;
   NSInteger months;
   NSInteger days;

   NSCalendar *calendar = [NSCalendar currentCalendar];
    unsigned unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay;

   NSDateComponents *dateComponentsNow = [calendar components:unitFlags fromDate:[NSDate date]];
   NSDateComponents *dateComponentsBirth = [calendar components:unitFlags fromDate:dateOfBirth];

   if (([dateComponentsNow month] < [dateComponentsBirth month]) ||

(([dateComponentsNow month] == [dateComponentsBirth month]) && ([dateComponentsNow day] < [dateComponentsBirth day]))) {
   years = [dateComponentsNow year] - [dateComponentsBirth year] - 1;
} else {
   years = [dateComponentsNow year] - [dateComponentsBirth year];
}

if ([dateComponentsNow year] == [dateComponentsBirth year]) {
   months = [dateComponentsNow month] - [dateComponentsBirth month];
} else if ([dateComponentsNow year] > [dateComponentsBirth year] && [dateComponentsNow month] > [dateComponentsBirth month]) {
   months = [dateComponentsNow month] - [dateComponentsBirth month];
} else if ([dateComponentsNow year] > [dateComponentsBirth year] && [dateComponentsNow month] < [dateComponentsBirth month]) {
   months = [dateComponentsNow month] - [dateComponentsBirth month] + 12;
} else {
   months = [dateComponentsNow month] - [dateComponentsBirth month];
}

if ([dateComponentsNow year] == [dateComponentsBirth year] && [dateComponentsNow month] == [dateComponentsBirth month]) {
   days = [dateComponentsNow day] - [dateComponentsBirth day];
}

if (years == 0 && months == 0) {
   if (days == 1) {
      return [NSString stringWithFormat:@"%d day", days];
   } else {
      return [NSString stringWithFormat:@"%d days", days];
   }
} else if (years == 0) {
   if (months == 1) {
      return [NSString stringWithFormat:@"%d month", months];
   } else {
      return [NSString stringWithFormat:@"%d months", months];
   }
} else if ((years != 0) && (months == 0)) {
   if (years == 1) {
       return [NSString stringWithFormat:@"%d year", years];
   } else {
       return [NSString stringWithFormat:@"%d years", years];
   }
} else {
  if ((years == 1) && (months == 1)) {
      return [NSString stringWithFormat:@"%d year and %d month", years, months];
  } else if (years == 1) {
      return [NSString stringWithFormat:@"%d year and %d months", years, months];
  } else if (months == 1) {
      return [NSString stringWithFormat:@"%d years and %d month", years, months];
  } else {
      return [NSString stringWithFormat:@"%d years and %d months", years, months];
  }
}
}

年齢をintにしたい場合は、次の回答を試してください.. link

- (NSInteger)age:(NSDate *)dateOfBirth {
  NSCalendar *calendar = [NSCalendar currentCalendar];
  unsigned unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay;
  NSDateComponents *dateComponentsNow = [calendar components:unitFlags fromDate:[NSDate date]];
  NSDateComponents *dateComponentsBirth = [calendar components:unitFlags fromDate:dateOfBirth];

  if (([dateComponentsNow month] < [dateComponentsBirth month]) ||
      (([dateComponentsNow month] == [dateComponentsBirth month]) && ([dateComponentsNow day] < [dateComponentsBirth day]))) {
    return [dateComponentsNow year] - [dateComponentsBirth year] - 1;
  } else {
    return [dateComponentsNow year] - [dateComponentsBirth year];
  }
}

これが役に立つことを願っています。

6
Dilip Rajkumar

Swift拡張機能を使用して年齢/年齢を取得するのは簡単ですNSDate

extension NSDate {
    var age: Int {
        let calendar: NSCalendar = NSCalendar.currentCalendar()
        let now = calendar.startOfDayForDate(NSDate())
        let birthdate = calendar.startOfDayForDate(self)
        let components = calendar.components(.Year, fromDate: birthdate, toDate: now, options: [])
        return components.year
    }
}

例：

NSDate(timeIntervalSince1970:0).age // => 45 (as of nov 2015) Epoch happened 45 year ago !

ところで、あなたは注意する必要があります、これは年齢の西洋の概念であり、数は他のいくつかの国では異なります（ 韓国 exempleの場合）。

3
Antzi

年齢だけを知りたい場合は、うるう年の計算も含むものの下に使用してください

- (NSInteger)age:(NSDate *)dateOfBirth {
    NSCalendar *calendar = [NSCalendar currentCalendar];
    unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
    NSDateComponents *dateComponentsNow = [calendar components:unitFlags fromDate:[NSDate date]];
    NSDateComponents *dateComponentsBirth = [calendar components:unitFlags fromDate:dateOfBirth];

    if (([dateComponentsNow month] < [dateComponentsBirth month]) ||
        (([dateComponentsNow month] == [dateComponentsBirth month]) && ([dateComponentsNow day] < [dateComponentsBirth day]))) {
        return [dateComponentsNow year] - [dateComponentsBirth year] - 1;
    } else {
        return [dateComponentsNow year] - [dateComponentsBirth year];
    }
}
3
Asta ni enohpi

私は間違っているかもしれませんが、これは簡単ですよね？

NSTimeInterval ageInterval = [birthDate timeIntervalSinceDate:[NSDate date]];

NSInteger age = ABS(ageInterval / (60 * 60 * 24 * 365));
2
Pedro

cobbal's solution に基づくSwift 3 +構文のメソッド。

func calculateAgeInYearsFromDateOfBirth (birthday: Date) -> Int {
        let now = Date()
        let calendar = Calendar.current

        let ageComponents = calendar.dateComponents([.year], from: birthday, to: now)
        let age = ageComponents.year!
        return age
    }
1
Maverick

年齢を計算する関数を次に示します（Swift 2.1）

func calculateAge (birthday: NSDate) -> NSInteger {

    let calendar : NSCalendar = NSCalendar.currentCalendar()
    let unitFlags : NSCalendarUnit = [NSCalendarUnit.Year, NSCalendarUnit.Month, NSCalendarUnit.Day]
    let dateComponentNow : NSDateComponents = calendar.components(unitFlags, fromDate: NSDate())
    let dateComponentBirth : NSDateComponents = calendar.components(unitFlags, fromDate: birthday)

    if ( (dateComponentNow.month < dateComponentBirth.month) ||
        ((dateComponentNow.month == dateComponentBirth.month) && (dateComponentNow.day < dateComponentBirth.day))
        )
    {
        return dateComponentNow.year - dateComponentBirth.year - 1
    }
    else {
        return dateComponentNow.year - dateComponentBirth.year
    }
}
0
Blaine Rothrock
let birthday = NSCalendar.currentCalendar().dateWithEra(1, year: 2016, month: 07, day: 25, hour: 8, minute: 53, second: 0, nanosecond: 0)!

func calculateAge(birthday: NSDate) -> String {

func grammaticalString(forUnit unit: String, value: Int) -> String {
    if value > 1 {
        return "\(value) \(unit)s"
    } else {
        return "\(value) \(unit)"
    }
}

let calendar = NSCalendar.currentCalendar()
let unitFlags: NSCalendarUnit = [NSCalendarUnit.Year, NSCalendarUnit.Month, NSCalendarUnit.Day, NSCalendarUnit.Hour, NSCalendarUnit.Minute]

let ageComponent = calendar.components(unitFlags, fromDate: birthday, toDate: NSDate(), options: [])
let years = ageComponent.year
let months = ageComponent.month
let days = ageComponent.day
let hours = ageComponent.hour

switch (years, months, days, hours) {
    case (let y, let m, _, _) where y > 0:
        return "\(grammaticalString(forUnit: "Year", value: y)) \(grammaticalString(forUnit: "Month", value: m))"

    case (let y, let m, let d, _) where y == 0 && m > 0:
        return "\(grammaticalString(forUnit: "Month", value: m)) \(grammaticalString(forUnit: "Day", value: d))"

    case (let y, let m, let d, _) where y == 0 && m == 0 && d > 0:
        return "\(grammaticalString(forUnit: "Day", value: d))"

    case (let y, let m, let d, let h) where y == 0 && m == 0 && d == 0 && h > 0:
        return "\(grammaticalString(forUnit: "Hour", value: h))"

    case (let y, let m, let d, let h) where y == 0 && m == 0 && d == 0 && h == 0:

        if ageComponent.minute > 0 {
            return "\(grammaticalString(forUnit: "Minute", value: ageComponent.minute))"
        } else {
            return "-"
        }

    default:
        return "-"
}

}

// Output will be any of these
// 2 Years 3 Months
// 3 Months 0 Days
// 2 Days
// 3 Hours
// 45 Minutes
// -
0
raw3d
   -(NSInteger) ComputeYearMonth
    {
  NSDateFormatter *format = [[NSDateFormatter alloc] init];
[format setDateFormat:@"yyyy-MM-dd"];

NSDate *DateOfBirth=[format dateFromString:[NSString stringWithFormat:@"%@-%@-%@",year,month,day]];
NSDate *currentTime = [NSDate date];

NSLog(@"DateOfBirth======%@",DateOfBirth);

NSInteger years = [[[NSCalendar currentCalendar] components:NSYearCalendarUnit
                                                   fromDate:DateOfBirth
                                                     toDate:currentTime options:0]year];

NSInteger months = [[[NSCalendar currentCalendar] components:NSMonthCalendarUnit
                                                    fromDate:DateOfBirth
                                                      toDate:currentTime options:0]month];
NSLog(@"Number of years: %d",years);
NSLog(@"Number of Months: %d,",months);



    return years;
  // End of Method
  }
0
ravinder521986

nSCalendarを使用するのが最も簡単な方法です。

NSDate *_dateOfBirth = ...;
NSDateComponent *_diff = [[NSCalendar currentCalendar] components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:_dateOfBirth toDate:[NSDate date] options:0];

NSLog(@"%@", _diff);
0
holex