UIDatePicker，根据今天的日期设置最大和最小日期

6 回答

• 77

  没有测试，但你可能想要这样的东西 .

  NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
  NSDate *currentDate = [NSDate date];
  NSDateComponents *comps = [[NSDateComponents alloc] init];
  [comps setYear:30];
  NSDate *maxDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
  [comps setYear:-30];
  NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
  
  [datePicker setMaximumDate:maxDate];
  [datePicker setMinimumDate:minDate];
  

  Swift 4.1的更新

  let calendar = Calendar(identifier: .gregorian)
  var comps = DateComponents()
  comps.year = 30
  let maxDate = calendar.date(byAdding: comps, to: Date())
  comps.year = -30
  let minDate = calendar.date(byAdding: comps, to: Date())
  datePicker.maximumDate = maxDate
  datePicker.minimumDate = minDate
  

  回复于 2024-04-27T16:11:09+08:00
• 18

  m_datePicker.maximumDate = [NSDate date];
  

  您可以使用此行代码设置最大日期（今天） .

  回复于 2024-04-27T16:11:09+08:00
• 1

  我的快速4版@toddg是：

  let currentDate = Date()
  var dateComponents = DateComponents()
  let calendar = Calendar.init(identifier: .gregorian)
  dateComponents.year = -100
  let minDate = calendar.date(byAdding: dateComponents, to: currentDate)
  dateComponents.year = -13
  let maxDate = calendar.date(byAdding: dateComponents, to: currentDate)
  

  对我来说很棒！

  回复于 2024-04-27T16:11:09+08:00
• 4

  改编@warrenm对Swift的回答：

  let currentDate = NSDate()
  let dateComponents = NSDateComponents()
  dateComponents.year = -13
  let minDate = calendar.dateByAddingComponents(dateComponents, toDate: currentDate, options: NSCalendarOptions(rawValue: 0))
  dateComponents.year = 30
  let maxDate = calendar.dateByAddingComponents(dateComponents, toDate: currentDate, options: NSCalendarOptions(rawValue: 0))
  
  
  dobPicker.maximumDate = maxDate
  dobPicker.minimumDate = minDate
  

  回复于 2024-04-27T16:11:09+08:00
• 3

  请尝试使用此代码Ios8

  NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
  NSDate *currentDate = [NSDate date];
  NSDateComponents *comps = [[NSDateComponents alloc] init];
  [comps setYear:30];
  NSDate *maxDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
  [comps setYear:-30];
  NSDate *minDate = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
  
  [datePicker setMaximumDate:maxDate];
  [datePicker setMinimumDate:minDate];
  

  回复于 2024-04-27T16:11:09+08:00
• 1

  今天正在研究这个问题，并提出了一个扩展UIDatePicker的Swift 3解决方案 .

  extension UIDatePicker
  {
      /// set the date picker values and set min/max
      /// - parameter date: Date to set the picker to
      /// - parameter unit: (years, days, months, hours, minutes...)
      /// - parameter deltaMinimum: minimum date delta in units
      /// - parameter deltaMaximum: maximum date delta in units
      /// - parameter animated: Whether or not to use animation for setting picker
      func setDate(_ date:Date, unit:NSCalendar.Unit, deltaMinimum:Int, deltaMaximum:Int, animated:Bool)
      {
          setDate(date, animated: animated)
  
          setMinMax(unit: unit, deltaMinimum: deltaMinimum, deltaMaximum: deltaMaximum)
      }
  
      /// set the min/max for the date picker (uses the pickers current date)
      /// - parameter unit: (years, days, months, hours, minutes...)
      /// - parameter deltaMinimum: minimum date delta in units
      /// - parameter deltaMaximum: maximum date delta in units
      func setMinMax(unit:NSCalendar.Unit, deltaMinimum:Int, deltaMaximum:Int)
      {
          if let gregorian = NSCalendar(calendarIdentifier:.gregorian)
          {
              if let minDate = gregorian.date(byAdding: unit, value: deltaMinimum, to: self.date)
              {
                  minimumDate = minDate
              }
  
              if let maxDate = gregorian.date(byAdding: unit, value: deltaMaximum, to: self.date)
              {
                  maximumDate = maxDate
              }
          }
      }
  }
  

  setDate 方法将设置 UIDatePicker 实例的三个值（日期，最小值，最大值） .

  setMinMax 仅设置最小值和最大值 . 使用选择器的当前日期计算最小值和最大值 .

  单位可以是以下值：

  • . 年

  • . 月

  • .day

  • . 小时

  • .minute

  • . 秒

  要设置加号和减去30年的日期，代码将是：

  var datePicker = UIDatePicker()
  var date = Date()
  
  datePicker.setDate(date, unit:.year, deltaMinimum:-30, deltaMaximum:30, animated:true)
  

  回复于 2024-04-27T16:11:09+08:00