swift - 如何获取两天之间的年龄差

Question

如何在给定日期和当前日期计算两天内的年龄，

这里贴上我写的代码

请帮帮我

 *var ageStr = ""
        var date2 = selecteddate
        formattedDateFromString(dateString: date2, withFormat: "MMM d,yyyy")
        let dateformetter = DateFormatter()

        //dateformetter.dateFormat = "yyyy-mm-dd"
        var dateStr = dateformetter.date(from: date2)
        let calender = Calendar.current
        let now = Date()


      guard dateStr == nil else{
          print("====ramjan--99089808=====",dateStr)
        return 0
      }
       let ageComponents = calender.dateComponents([.month,.day,.year],from: date as Date,to: now)
       print("====suresh====",ageComponents)
      if ageComponents.year != 0{
           ageStr = "Yrs."

          return ageComponents.year!
      }
     else if ageComponents.month == 1
        {
     ageStr = "Month"

            return ageComponents.month!    
    }
      else{
           ageStr = "day"

          return ageComponents.day!
      }
  return ageComponents.day!
}

任何帮助将不胜感激，谢谢

Answer 1

swift 4

let now = Date()
let birthDate: Date = Given Date..
let calendar = Calendar.current

let component = calendar.dateComponents([.year], from: birthDate, to: now)
let age = component.year!