Question

我想仅显示 UIDatePickerView 开始日期日历180天，当用户在180天内选择任何开始日期时，他会点击结束日期按钮，因此日期选择器应显示仅89天开始日期和选定的开始日期不应该是结束日期

Answer 1

// Add A Button And Give them Connection
 @IBOutlet weak var DateSelect: UIButton!

// Add "UIDatePicker" to your project and Give them connection
@IBOutlet weak var fromedatepicker: UIDatePicker! 

// . and  Make an Action Button to "UIDatePicker"
@IBAction func fromedatepicker(_ sender: Any) {
    let calendar: NSCalendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)!
    let currentDate = NSDate()
    let dateComponents = NSDateComponents()
    let minDate = calendar.date(byAdding: dateComponents as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))

    dateComponents.month = 3 //or you can change month = day(90)           

    let maxDate = calendar.date(byAdding: dateComponents as DateComponents, to: currentDate as Date, options: NSCalendar.Options(rawValue: 0))
    self.fromedatepicker.maximumDate = maxDate
    self.fromedatepicker.minimumDate = minDate

    let dateFormatter = DateFormatter()

    dateFormatter.dateFormat = "dd/MM/yyyy"
    let strDate = dateFormatter.string(from: fromedatepicker.date)
    print(strDate)

    DateSelect.DateSelect.titleLabel?.text =  strDate    
}

Answer 2

您可以使用addingTimeInterval的{{1}}方法执行此操作。

Date

现在datePicker.minimumDate = startDate?.addingTimeInterval(60 * 60 * 24 * 90) // 90 days interval offset，DatePicker始终显示90天转发日期，然后开始日期。

如果您希望在endDate的当前日期显示180天，那么您可以像下面一样管理startDate。

startDate

它只会在datePicker中显示180天的持续时间。

Answer 3

如果您想从开始日期开始仅显示90天而不是：

@IBOutlet var datePicker: UIDatePicker!

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        datePicker.datePickerMode = .date //To show only Date format for date picker

    //Get current Date 
    var currentDate = Date()

    let addDays: TimeInterval = (60 * 60 * 24 * 180) //Add 180 for initial Days

    currentDate = currentDate.addingTimeInterval(addDays)

    datePicker.minimumDate = Date()  //Start with current date
    datePicker.maximumDate = currentDate //End with current date + 180 days.

}

//Action for DatePicker
@IBAction func displayDay(_ sender: Any) {

   let choosenDate = datePicker.date

   //If you want to set Date format for selected picker date
   let dateFormatter = DateFormatter()
   dateFormatter.dateFormat = "MMM dd, yyyy"

   let selectedDate = dateFormatter.string(from: choosenDate)
   print(selectedDate)

   //You can use different datePicker object to set below endDate as +90 days because if you you same date picker it will always add selected date +90 days to date picker. 
   let addDays: TimeInterval = (60 * 60 * 24 * 89) //Add 89 Days

   //Set Start Date as choosen Date
   datePicker.minimumDate = choosenDate

   //Set Max Date as choosen Date + 89 Days
   datePicker.maximumDate = Date(timeInterval: addDays, since: choosenDate)
}

Answer 4

    var datePicker: UIDatePicker = UIDatePicker()
    datePicker?.datePickerMode = .date
    datePicker?.minimumDate = Date() // this to set the start date today
    //this to set the date range you can change " byAdding: .year " to "byAdding: .month" if you went the range by month or to "byAdding: .day"
    let nextDays = Calendar.current.date(byAdding: .year, value: 14, to: Date()) 
    datePicker?.maximumDate = nextDays ?? Date() // this to set the maximum date

日期选择器startDate和endDate Swift 3

4 个答案: